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SRM850 4.0TFSI Turbo Kit
SRM850
The new benchmark
in street performance
for the 4.0TFSI
platform.
Drop in package that includes everything you need to make up to 850WHP.
- SRM850 Billet Turbochargers for 4.0TFSI
- Upgraded Exhaust Manifolds with Turbine Housing for 4.0TFSI
- SRM Port Injection Spacer Kit for 4.0TFSI
- SRM Intakes for 4.0TFSI
- LPFP Upgrade for 4.0TFSI
- Ethanol Sensor and Lines Kit for Flex Fuel
- W2A to Throttle Body Intake Spacer
- Tial Wastegate Actuators for 4.0TFSI
- Software Calibration for DS1
Results
This kit has consistently tested at 800-850WHP on our in house Heartbreaker Mustang Dyno, which is well over 900WHP DynoJet, all while spooling up before 4000RPM and pulling hard to redline for the ultimate street car.
838WHP@744WTQ Mustang Dyno
SRM850 Billet Turbochargers
Our SRM850 Billet Turbochargers are the newest and latest iteration of our +4 Turbochargers which have been proven for years on the 4.0TFSI platform to make good, reliable and responsive power.
Extremely fast spool up with a large enough compressor wheel to flow up to 850WHP in the SRM850 package.
Engineering, Finish Machining, Final Assembly and QC at our production facility in Nevada, USA.
SRM850 Turbochargers
SRM 4.0TFSI Exhaust Manifold with
Integrated Turbine Housing
Our Upgraded Exhaust manifolds with Integrated Turbine Housings alleviate cylinder 5 miss-fire issues due to excessive back-pressure often experienced by people running stock exhaust manifolds and allow the engine to exhale freely thereby alleviating the major bottleneck in the 4.0TFSI engine.
The upgraded exhaust manifolds are an integral part in the SRM850 kit allowing the package to reach such high power output by flowing significantly more than the factory exhaust manifolds without sacrificing the extremely responsive spool that the 4.0TFSI is known for.
These same exhaust manifolds are proven well over 1000WHP on flagship and development vehicles and are the result of years of development.
Engineering, Final Assembly and QC at our Production Facility in Nevada, USA.
4.0TFSI Manifolds with Turbine Housing
SRM 4.0TFSI Port Injection Kit
Our Proprietary Port Injection Kit enables the SRM850 Package to run up to E100 and provides fuelling far beyond what the factory DI system is capable of.
This port injection kit utilizes injection sandwich plates between the factory air duct and factory intake manifold for a drop in solution.
Below we see the difference Port Injection makes on the SRM850 kit. The DI system topped out at 694WHP Mustang and our PI system allowing the kit to make 818WHP Mustang on this run on e60, and it is capable of flowing even more than this kit requires giving adequate overhead.
Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.
4.0TFSI Port Injection Kit
Port Injection Upgrade (Faint Line) versus Direct Injection Only (Dark Line)
SRM 4.0TFSI Intakes
Our Proven SRM Intakes are a requirement, allowing the Turbochargers to breathe well and are a significant upgrade over the stock intakes which are a known bottleneck on this platform due to their restrictive design.
Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.
SRM 4.0TFSI Intakes
SRM 4.0TFSI LPFP Upgrade
Essential to deliver enough fuel to the Factory Direct Injection and Port Injection System to achieve these power levels is the SRM 4.0TFSI LPFP Upgrade.
Proven dual LPFP solution that we have offered for years. These kits are extremely reliable and provide the heavy lifting for fueling the SRM850 package.
Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.
SRM 4.0TFSI LPFP Upgrade
Flex Fuel Lines and Sensor
To enable Flex Fuel use on the 4.0TFSI, the flex fuel lines and sensors are required. This with DS1 allows the kit to utilize flex fuel.
Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.
Flex Fuel Sensor Kit and Fuel Lines
Throttle Body Spacer
The 4.0TFSI Throttle Body Spacer protects the W2A Intercooler Plastic from premature failure
Engineering, Production and QC at our Production Facility in Nevada, USA.
Throttle Body Spacer
Tial Wastegate Actuators and
Bracket for 4.0TFSI
Upgraded Tial Wastegate Actuators and Billet Bracket for 4.0TFSI to replace the weaker factory wastegate actuators
Tial Wastegate Actuators
DS1 Software Calibration
Before today the standard in the 4.0TFSI community has been piecing together parts that then require custom tuning which is a headache and has mixed results.
Hardware variance and lack of access to a Dyno for most custom tunes provides limited and inconsistent results. Dealing with custom tuners can be time consuming and expensive. Tuning without a Dyno and a tuner present to monitor the vehicle can be dangerous and expensive.
We have addressed these issues based on feedback from our Customers and the Community in the SRM850 package by packaging the kit with a hardened calibration developed on our development vehicles on our in house Mustang Dyno. When you use the SRM850 kit, the calibration is already done. The tune is hardened and ready to use out of the box.
It's as simple as it is powerful.
Flex Fuel Capability
Our Flex Fuel System, Port Injection System, and LPFP upgrade, when used with DS1, allow you to fill up any ethanol percentage from E0-E100.
No more worrying about overstressing your fuel system with high ethanol concentrations. This kit addresses fuel flow completely, allowing you to just fill up with Flex Fuel and enjoy your car.
Simply fill up with any concentration of Ethanol, and the Calibration in conjunction with the hardware will account for your ethanol concentration seamlessly, adjusting power output accordingly to a given concentration of Ethanol.
Compatibility
- C7 & C7.5 RS7, S7, S6
- D4 S8/A8 (4.0TFSI)
- Requires DS1
Requirements
- This kit must be used in its entirety!
- Failure to do so will result in the kit not being eligible for calibration or technical support!
- Meaning : The kit must be implemented completely, and you are only to omit required parts of the kit if you already have them. Failure to adhere to this will result in you being denied support, calibration, and refund! However, if parts of the kit are omitted accidentally, please contact support and we will help you order them and regain access to calibration and support. If you omit parts of the kit, and an issue arises that could be attributed to the omission of said part in the build, we will ask you for photographs of the parts you omitted in the order installed on the vehicle before proceeding with support.
- The base of the kit, the SRM850 Turbochargers, SRM850 Exhaust manifold and SRM850 Port Fuel Injection setup is by default part of the SRM850 kit and no substitutions or omissions can be made on the core of the kit.
- The supporting modifications included in the kit, SRM Intakes, SRM LPFP, Ethanol Lines and Flex Sensor package, W2A Throttle Body Spacer, and Tial Wastegates for the 4.0TFSI, may only be omitted if you already have them! No exceptions!
- The SRM850 kit REQUIRES a DS1 for calibration. You must already have a DS1, or select one from the add-on menu.
Notes
- A TCU Tune is HIGHLY Recommended and is available as an add-on
- Note we recommend a free flowing exhaust as the factory exhaust is restrictive and will reduce the performance of the kit. If you need an upgraded exhaust we offer a Dual 3" Exhaust solution as an add-on upgrade.
- This kit is for Off Road Use Only and should be installed by a professional.
- Requires sending in Exhaust Manifolds as cores prior or a core charge of 1000$ will be required
THIS KIT IS A MINIMUM 2 WEEK LEAD TIME - PLEASE CONFIRM WITH OUR SALES DEPT BEFORE SCHEDULING A MECHANIC
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SRM1000 4.0TFSI Turbo Kit
SRM1000
For the enthusiast
That demands the ultimate
performance
For their 4.0TFSI.
Drop in package that includes everything you need to make up to 1000WHP.
- Xona Billet Turbochargers for 4.0TFSI
- Upgraded Exhaust Manifolds with Turbine Housing for 4.0TFSI
- SRM A2A with Port Injection for the 4.0TFSI
- SRM 3" Intakes for 4.0TFSI
- LPFP Upgrade for 4.0TFSI
- Ethanol Sensor and Lines Kit for Flex Fuel
- Tial Wastegate Actuators for 4.0TFSI
- Software Calibration for DS1
Results
This kit has consistently tested at 950-1000WHP on our in house Heartbreaker Mustang Dyno, which is well over 1100WHP DynoJet. The highest performance kit available for the 4.0TFSI platform.
992WHP@919WTQ Mustang Dyno
SRM1000 Billet Xona Ball Bearing
Turbochargers
Our SRM1K Billet Turbochargers are the result of years of research and development bringing the ultimate drop in Turbocharger solution to the 4.0TFSI platform. These have been powering our Flagship and Development vehicles for years.
Limitless top end with mind numbing boost numbers.
Why Xona? It's simple. They're USA made, rebuildable, and offer the highest possible performance in this form factor. Xona Turbochargers power our flagship and R&D vehicles making upwards of 1200WHP.
Engineering, Finish Machining, Final Assembly and QC at our production facility in Nevada, USA.
SRM1000 Xona Turbochargers
SRM Air to Air Intercooler with
Integrated Port Injection
One of our flagship products, and first to market in the 4.0TFSI world, the result of years of development and iteration, is the 4.0TFSI A2A with Port Injection offering from SRM.
This gorgeous piece has billet CNC end tanks, a large core, and integrated port injection via billet CNC snouts. This is the crown jewel of any 4.0TFSI and is every bit as functional as it is stunning.
The A2A keeps charge temperatures low during a pull, and the Port Injection integration allows use of ethanol concentrations up to E100.
Engineering, Production, Final Assembly and QC at our Production Facility in Nevada, USA.
Air to Air Intercooler Core Featuring Billet CNC End Tanks
Air to Air Intercooler Kit with Port Injection System
SRM 4.0TFSI Exhaust Manifold with
Integrated Turbine Housing
Our Upgraded Exhaust manifolds with Integrated Turbine Housings alleviate cylinder 5 miss-fire issues due to excessive back-pressure often experienced by people running stock exhaust manifolds and allow the engine to exhale freely thereby alleviating the major bottleneck in the 4.0TFSI engine.
The upgraded exhaust manifolds are an integral part in the SRM1000 kit allowing the package to reach such high power output by flowing significantly more than the factory exhaust manifolds without sacrificing the extremely responsive spool that the 4.0TFSI is known for.
These same exhaust manifolds are proven on flagship and development vehicles and are the result of years of development.
Engineering, Final Assembly and QC at our Production Facility in Nevada, USA.
4.0TFSI Manifolds with Turbine Housing
SRM 3" 4.0TFSI Intakes
The big brother of our SRM 4.0TFSI Intakes, the SRM 3" Intakes, are a requirement, allowing the Turbochargers to breathe well and are a significant upgrade over the stock intakes which are a known bottleneck on this platform due to their restrictive design. The inclusion of the A2A in this kit allows the larger intakes to fit.
Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.
SRM 4.0TFSI Intakes (RS7/S7/S6 Variant)
SRM 4.0TFSI Intakes (S8 Variant)
SRM 4.0TFSI LPFP Upgrade
Essential to deliver enough fuel to the Factory Direct Injection and Port Injection System to achieve these power levels is the SRM 4.0TFSI LPFP Upgrade.
Proven dual LPFP solution that we have offered for years. These kits are extremely reliable and provide the heavy lifting for fueling the SRM1000 package.
Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.
SRM 4.0TFSI LPFP Upgrade
Flex Fuel Lines and Sensor
To enable Flex Fuel use on the 4.0TFSI, the flex fuel lines and sensors are required. This with DS1 allows the kit to utilize flex fuel.
Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.
Flex Fuel Sensor Kit and Fuel Lines
Tial Wastegate Actuators and
Bracket for 4.0TFSI
Upgraded Tial Wastegate Actuators and Billet Bracket for 4.0TFSI to replace the weaker factory wastegate actuators
Tial Wastegate Actuators
Full 3" Dual Exhaust
Our in-house full dual 3" exhaust allows the turbochargers to breathe, available with or without mufflers. Fully stainless construction.
Engineering, Production, Assembly and QC at our Production Facility in Nevada, USA.
DS1 Software Calibration
Before today the standard in the 4.0TFSI community has been piecing together parts that then require custom tuning which is a headache and has mixed results. Hardware variance and lack of access to a Dyno for most custom tunes provides limited and inconsistent results. Dealing with custom tuners can be time consuming and expensive. Tuning without a Dyno and a tuner present to monitor the vehicle can be dangerous and expensive. We have addressed these issues based on feedback from our Customers and the Community in the SRM1000 package by packaging the kit with a hardened calibration developed on our development vehicles on our in house Mustang Dyno. When you use the SRM1000 kit, the calibration is already done. The tune is hardened and ready to use out of the box.
It's as simple as it is powerful.
Flex Fuel Capability
Our Flex Fuel System, Port Injection System, and LPFP upgrade, when used with DS1, allow you to fill up any ethanol percentage from E0-E100. No more worrying about overstressing your fuel system with high ethanol concentrations. This kit addresses fuel flow completely, allowing you to just fill up with Flex Fuel and enjoy your car. Simply fill up with any concentration of Ethanol, and the Calibration in conjunction with the hardware will account for your ethanol concentration seamlessly, adjusting power output accordingly to a given concentration of Ethanol.
Compatibility
- C7 & C7.5 RS7, S7, S6
- D4 S8/A8 (4.0TFSI)
- Requires DS1
Requirements
- This kit must be used in its entirety!
- Failure to do so will result in the kit not being eligible for calibration or technical support!
- Meaning : The kit must be implemented completely, and you are only to omit required parts of the kit if you already have them. Failure to adhere to this will result in you being denied support, calibration, and refund! However, if parts of the kit are omitted accidentally, please contact support and we will help you order them and regain access to calibration and support. If you omit parts of the kit, and an issue arises that could be attributed to the omission of said part in the build, we will ask you for photographs of the parts you omitted in the order installed on the vehicle before proceeding with support.
- The base of the kit, the SRM1000 Turbochargers, SRM1000 Exhaust manifold and SRM A2A with Port Fuel Injection setup is by default part of the SRM1000 kit and no substitutions or omissions can be made on the core of the kit.
- The supporting modifications included in the kit, SRM Intakes, SRM LPFP, Ethanol Lines and Flex Sensor package, Full 3" SRM Exhaust and Tial Wastegates for the 4.0TFSI, may only be omitted if you already have them! No exceptions!
- The SRM1000 kit REQUIRES a DS1 for calibration. You must already have a DS1, or select one from the add-on menu.
Notes
- A TCU Tune is REQUIRED and is available as an add-on
- This kit is for Off Road Use Only and should be installed by a professional.
- Requires sending in Exhaust Manifolds as cores prior or a core charge of 1000$ will be required
THIS KIT IS A MINIMUM 2 WEEK LEAD TIME - PLEASE CONFIRM WITH OUR SALES DEPT BEFORE SCHEDULING A MECHANIC
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Audi RS6 RS7 S8 upgrade turbocharger set STAGE 2 (TS2+)
Upgrade turbocharger set for Audi RS6, RS7 and S8 with 4G 4.0l TFSI engines.
Power range: up to 920hp -
Engine Skid Plate C7 A6/S6/A7/S7/RS7 In-stock
American made Skid plates for Audi C7 A6/S6/A7/S7/RS7 Cars. The skid plates are Made of 5052 Aluminum. All necessary hardware is included along with complete instruction sheet. Four Rings Auto saw a need for a better solution to the stock plastic skid plate that break or get ripped off if your car is lowered or hit something. This skid plate helps protect against that.
Thickness 0.1155
***These skid plates are in-stock and drop shipped from manufacturer***
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APR CARBON FIBER INTAKE - 4.0T RS6/RS7 (C8)
Only 1 left in stockFeatures:
- +47 AWHP & +38 AWFT-LBS at the wheels measured over stock (Stage 1 93)
- Carbon Fiber airbox with 52% larger airbox outlets
- Smooth and high flow turbocharger inlet pipe couplers
- 93% larger aluminum turbocharger inlets with adapter rings for larger turbochargers
- 50% reduction in pressure drop at the turbo inlets
- High flow and washable pleated cotton gauze filter material
- Enhanced engine sound
- Turbos spool faster
- Turbos operates more efficiently
- Inlet piping diameter is maximized from the airbox outlets to the turbocharger inlets
- Inlet piping addresses the main system restriction
- Billet turbo adapter rings make fitting this system to larger turbo possible
- Emissions friendly
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Lamborghini Urus & Audi RS Q8 High Performance Intercoolers
The Urus/RS Q8 Intercoolers have been meticulously designed and engineered to fit exactly like the OEM units they replace. Utilizing all factory mounting points, the installation is straightforward with a “drop-in fit” design. No cutting or modifications are required, and there is no need for aftermarket shrouds or hoses. All mating OEM components can be reused and reinstalled.
Sold as a pair (Left & Right Intercoolers)
Eliminates Heat Soak and Lower Intake Air Temperatures (IAT) for Maximum Performance in High-Performance and Race Conditions
Formula-1 Performance Grade Cores by PWR (2-Row Cores features Rolled Tubes w/ Inner Fins)
CNC Machined Billet End Tanks
100% TIG Welded vs OEM Crimped Plastic End Tanks for Maximum Strength & Durability
Made in the USA at PWR North America
Integrated 1/8th NPT Port with plug on lower outlet tank for Water-Methanol Injection
OEM Style Inlet/Outlet Connections for Precise Fitment With All OEM Components
Finished in CSF’s Thermal Dispersion Ceramic Coating (CSF #8211)
Raw Finish with no coating for the “show” look or custom finishes available upon request (CSF #8211R)
True Plug-and-Play “Drop-in Fit” Installation Requires Absolutely No Modifications
R&D and Performance Testing by Pacific German & VF Engineering
1-Piece Welded Charge Pipe vs OEM Bolt-On Pipe w/ O-Ring (known failure point)Performance Gains:
Stage 1 (Stock Tune) – Approx. +20 WHP / +18 WTQ*
Stage 2 (With High-Performance Tune) – Approx. +10 WHP / + 20 WTQ*
*Estimated Performance based on same engine platform Audi C8 RS6/RS7 CSF IntercoolersApplications:
2019+ Lamborghini Urus
2020+ Audi RS Q8 -
CSF 2020+ Audi C8 RS6/RS7 High-Performance Intercooler
- Eliminates Heat Soak and Lowers Intake Air Temperatures (IATs) for Maximum Performance in High-Performance and Race Conditions
- Stage 1 (Stock Tune) +20 WHP / +18 WTQ*
- Stage 2 (With High-Performance Tune) +10 WHP / +20 WTQ*
- Formula-1 Performance Grade Core by PWR (2-Row Core Featuring Rolled Tubes w/ Inner Fins)
- CNC Machined Billet End Tanks
- 100% TIG Welded vs. OEM Style Gasket and Crimped End Tanks for Maximum Durability
- OEM Style Inlet/Outlet Connections for Precise Fitment With All OEM Components
- True Plug-and-Play “Drop-in Fit” Installation Requires Absolutely No Modifications
- Made in the USA at PWR North America
Complete Set Fits:
- 2020+ Audi C8 RS6/RS7
- OEM # 4K0 145 805 P (Left) & 4K0 145 806 B (Right)
- Eliminates Heat Soak and Lowers Intake Air Temperatures (IATs) for Maximum Performance in High-Performance and Race Conditions
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Eventuri Audi C8 RS6 / RS7 - Black Carbon Intake System - Gloss/Matte
EVE-C8RS6-CF-INT : Audi C8 RS6/RS7 Intake GLOSS carbon
EVE-C8RS6-CFM-INT : Audi C8 RS6/RS7 Intake MATTE carbonAUDI C8 RS6 RS7
Performance Increase – Stock ECU : 15-25hp, 11-20ft-lbs
Performance Increase – Stage 1* : 45-50hp, 40-45ft-lbs
Stage 1 Acceleration 100-200Km/h : Reduced by 0.6s
Performance Increase – Stage 2* : 60-80hp, 60-70ft-lbsThe Audi C8 RS6 intake system is the culmination of extensive development, testing and prototyping. Our aim was to address 2 main criteria: 1) Increased flow rate. 2) Smooth Airflow. The first objective was met by utilising all of the limited space available in the RS6 engine bay which was heavily restricted by the underside of the hood. Our solution was to completely redesign the entire airbox which maximized volume, increased flow entry openings and created a more favourable filter angle to the turbos. Furthermore we dramatically increased the size of the turbo inlets by as much as 85% when measuring the cross sectional area at the openings. The second objective was met by designing an organically shaped system with a custom rounded panel filter to ensure the airflow path contained no sharp corners and therefore allowed for the flow to remain laminar. With smooth transitions from the filter to the turbo inlets, our intake minimises the formation of turbulence and therefore the turbos are able to operate more efficiently. We partnered with BMC for a bespoke filter element to ensure that the filtration area is as large as possible whilst keeping airflow clean.
With all objectives met, our C8 RS6 intake system delivers on all fronts and allows for the turbos to generate boost more efficiently. This results in an improved throttle response and significant power gains, independently tested which increase with higher states of tune. The performance gains measured are a result of the complete system we have developed from the airbox base to the lid and the inlets.
*Gains measured can vary with different ECU tunes.
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4.0 TFSI Turbo Systems Stage 1 RS6/RS7/S8 (TS1) (In-Stock)
Only 2 left in stockUpgrade STAGE 1 turbochargers kit for Audi S6, RS6, S7, RS7, A8 and S8 with 4G 4.0l TFSI engines design to fit directly to the original exhaust manifolds. It is our creation not only for RS models, with capability of mounting these turbochargers to standard exhaust manifolds it is a perfect choice for S6, S7 and A8 models too.
What is upgraded?
It is our lighter version of 4.0tfsi engine upgrade turbochargers - plug and play.
Both turbochargers equipped with dual ceramic ball bearings, compressor wheels replaced with bigger reinforced machined from the solid billet impelers to hold heavy loads on high boost. Enlarged turbine wheels. Refurbished housings, new shafts and balanced on VSR.
Power range: 800+ hp -
4.0 TFSI Turbo Systems Performance Vacuum Control Actuator Upgrade
These BOLT ON performance turbo actuators designed with the intention of increasing the boost output of a turbocharged system when reaching for higher power comparing to the OEM actuators. Feature durable billet actuator bodies and bolt on stainless steel brackets with engine cover mounts.
This set includes:
2x Performance Vacuum Control Actuators;
2x Stainless steel brackets with engine cover mounts;
2x Adjustable actuators shafts.
Compatible with Audi S6, RS6, S7, RS7, A8, S8 4.0l TFSI engines. -
DS1 Enhanced OTS Tune
Need customized tune settings beyond what the Dyno Spectrum OTS maps provide?
Rolling anti-lag
Pops and bangs
Exhaust flap and sound tuning
Rev limiter changes
4 Bar map sensor implementation
DS1 port injection, meth injection, nitrous controller implementation
THIS SERVICE DOES NOT INCREASE POWER OUTPUT. For more involved custom calibrations to increase performance, you must speak directly with one of our representatives.