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650R Conversion (Stage 4.25)

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The 'Severn Valley Motorsport - Stage 4.25 / 650R' is without doubt our most popular modification. This is where the GT-R feels at its most 'alive' before other moving further up the scale. This level of SVM conversion is 'considerably' more powerful and faster than an OEM car and is fantastic. It builds on the previous stages but comes with the addition of 2x large 76mm downpipes to decrease turbocharger backpressure and allows them to spool up not only faster but produce more power. This is one of the best 'bang-for-buck conversions' available for the R35 GT-R.

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  • COBB Accessport Unit (V3) - (Nis 06 / 07 08)
    - with new Engine and Gearbox software (as standard).
    - Real-Time Performance Gauges displayed on Cobb Unit.
    - Data-Logging capability.
    - Custom-Set Shift Light.
    - Code Reader (with clearing).
    - Much more...

  • K&N Large Hi-Flow Cone Filters
    - Superior performance cones and quality over cheap sponge filters.

  • ASNU Bosch 1050cc or 1100cc Motorsport Injectors
    - OEM reach their limit at 600HP, these will fuel considerably more.
  • SVM 80mm MAF Intake Pipes (with MAF housings)
    - Considerable increase in air flow rate to the intakes.

  • SVM Performance Downpipes
    - Larger 76mm Downpipes.
  • SVM Stainless Steel 90mm (T304 Y-Pipe)
    - Exceptional build quality and performance.
    - Other tuners often fit only a 76mm Y-Pipe.

  • SVM Stainless Steel 102mm (T304 Exhaust System)
    - Exceptional build quality and performance.
    - Developed 'in-house' at SVM.
    - As used on the 'UK's Fastest Quarter-Mile R35 GT-R (8.3s @ 167mph)
    - Capable of supporting power levels of 'upto' 1500 HP.
  • Engine Performance
    - Increase in Horsepower
    - Increase in Torque

  • Revised Ignition Maps
    - Custom ignition timing.

  • Revised Fueling Maps
    - Enhanced fuelling on WOT.
    - Improved economy on PT (Partial Throttle).

  • Launch Control Map
    - Custom launch control map (when used with gearbox software upgrade).

  • Boost Control Options
    - Boost pressure is controllable via steering wheel.

  • Full Safety Check and Report

    Price (Fitted)
    £4859.00 (ex VAT) (inc SVM 102mm Exhaust)*

    * PLEASE NOTE: This super conversion comes with a unique 102mm exhaust and CAST downpipes unlike many other competitors.

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  • EcuTEK Tuning Upgrade (Version 5)
    - with new Engine Software (as standard).

  • K&N Large Hi-Flow Cone Filters
    - Superior performance cones and quality over cheap sponge filters.

  • ASNU Bosch 1050cc or 1100cc Motorsport Injectors
    - OEM reach their limit at 600HP, these will fuel considerably more.

  • SVM 80mm MAF Intake Pipes (with MAF housings)
    - Considerable increase in air flow rate to the intakes.
  • SVM Performance Downpipes
    - Larger 76mm Downpipes.
  • SVM Stainless Steel 90mm (T304 Y-Pipe)
    - Exceptional build quality and performance.
    - Other tuners often fit only a 76mm Y-Pipe.
  • SVM Stainless Steel 102mm (T304 Exhaust System)
    - Exceptional build quality and performance.
    - Developed 'in-house' at SVM.
    - As used on the 'UK's Fastest Quarter-Mile R35 GT-R (8.3s @ 167mph)
    - Capable of supporting power levels of 'upto' 1500 HP.
  • Engine Performance
    - Increase in Horsepower
    - Increase in Torque

  • Revised Ignition Maps
    - Custom ignition timing.

  • Revised Fueling Maps
    - Enhanced fuelling on WOT.
    - Improved economy on PT (Partial Throttle).

  • Launch Control Map
    - Custom launch control map (when used with gearbox software upgrade).

  • Boost Control Options
    - Boost pressure is controllable via steering wheel.

  • Full Safety Check and Report

    Price (Fitted)
    £4559.00 (ex VAT) (inc SVM 102mm Exhaust)*

    * PLEASE NOTE: This super conversion comes with a unique 102mm exhaust and CAST downpipes unlike many other competitors.


 

 


* Please note: You may find other tuners offering 'Stage 4.25's for less money, but this is without an exhaust system being added and still retains the standard system. This is not a true Stage 4.25, more-so, the GT-R would not be of 650R spec due to restrictions. Our SVM 102mm system is a excellent priced custom system which will allow your Stage 4.25 to be set up the way it should be. We have completed hundreds of these conversions now and are the go-to tuner for a 'full-fat' Stage 4.25 / 650R.

Being of a 
COBB Pro-Tuner (Gold) status we favour use of the Accessport to tune GT-R's due to a number of advantages. We believe the ability to 'see' in real-time what your GT-R is doing is very important to the health of the vehicle. If you would prefer for us to tune on EcuTEK however we are more that happy to do this for you and we are very skilled in doing so. Our GT-R's on EcuTEK are tuned here by the best in the industry.

Why not also take the opportunity whilst your GT-R is in with us here at SVM to have a professional 'Full Service' completed to ensure that it is running in Top condition.

* The SVM Y-Pipe comes with a Limited Life-Time Warranty to the initial purchaser against any manufacturing defects.

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