R-Tech Performance Tuning

R-Tech Performance Tuning R-Tech Performance Ltd
2.0TFSI 2.0TSI Custom Tuning Services
Audi - Seat - Skoda - VW - Rolling Road R-Tech Performance
(641)

Couldn't keep off the dyno whilst on Holiday... lol
11/07/2026

Couldn't keep off the dyno whilst on Holiday... lol

Audi s3 8p 2.0TFSI k04 in for stage 2+ tuning session. Stock intercooler with actuator spring which had lost some of it...
04/07/2026

Audi s3 8p 2.0TFSI k04 in for stage 2+ tuning session. Stock intercooler with actuator spring which had lost some of its tension.

Golf ED30 in for stage 2+ tuning session with an Antisurge core. Unfortunately the actuator had been setup incorrectly...
04/07/2026

Golf ED30 in for stage 2+ tuning session with an Antisurge core. Unfortunately the actuator had been setup incorrectly. A 70nm actuator wound right up to 125nm which give basically zero scope on boost control due to the tiny opening window. Mixed with old fuel and a stock fmic. Back to the drawing board. The customer has asked us ti get the actuator setup correctly with our development method of 90nm spring setup to 125nm. This allows the perfect 👌 sweep control of the actuator. Allowing basically max power at the top end with 85-90% duty at the same time offering a really low minimum boost for drivabilty at part throttle. Peak boost lower down being controlled with 45-55% duty.
Having an actuator setup correctly to match the torque and power band boost ranges with the full sweep of the wastegate makes a massive difference to the quality of the drivability and control. Lots of after market actuators end up losing half of the wastegate open sweep which makes drivabilty on/off and a very limited boost control range with lower boost levels unachievable. They are ok for the full throttle peak numbers.

The way the actual was setup minimum boost would creep to 335hp with 0% n75 duty!

Alex with his bible...
04/07/2026

Alex with his bible...

As clean and tidy as they come. 2016 Golf mk7R DSG Japanese imported in for our special offer package deal. Inlet an...
04/07/2026

As clean and tidy as they come. 2016 Golf mk7R DSG Japanese imported in for our special offer package deal. Inlet and injector cleaning,health check, haldex pump filter cleaning, then a stage 1 ecu and tcu dyno tuning session.
Completely no hardware modifications.

Seat Leon Cupra 2.0TSI DSG OPF in for stage custom dyno tuning session, ecu and tcu calibrations. Modifications = opf b...
04/07/2026

Seat Leon Cupra 2.0TSI DSG OPF in for stage custom dyno tuning session, ecu and tcu calibrations. Modifications = opf back exhaust upgrad along with full induction kit.

Setup with our unique drivabilty package, boost by gear, 1-1 linear torque demand throttle, Enchanced ASR traction control and anti tramping/torque reduction base on steering angle.

Delta gains of 80hp 80lbft+

The resident breaker of cars on track... Nathan from NJW dropped of one of his promotional track day toys for a custom d...
04/07/2026

The resident breaker of cars on track... Nathan from NJW dropped of one of his promotional track day toys for a custom dyno tuning session with an Vagbyjosh Antisurge k04 core and upgraded actuator.

Setup with multiple switchable boost profiles, and NLS full throttle gear shift ability. Being 4wd the boost by year was setup full send in every gear.

Volkswagen Scirocco 2.0TFSI CDL DSG came in for inlet cleaning injector testing & servicing, runner flap delete. Then o...
04/07/2026

Volkswagen Scirocco 2.0TFSI CDL DSG came in for inlet cleaning injector testing & servicing, runner flap delete. Then onto the dyno for stage 2+ tuning session with multiple boost profiles and boost by gear patches added

12 years ago since you remapped my car!!.....Golf ED30 DSG which in for full health check, mot, front springs , inlet cl...
04/07/2026

12 years ago since you remapped my car!!.....

Golf ED30 DSG which in for full health check, mot, front springs , inlet cleaning, injector testing and servicing.

We originally tuned this car 12 years ago back in 2014 for the same owner. We carried out a dyno logging session to see if it was still performing well.

We reported back to the customer it made a healthy 303hp 305lbft. He then sends us a photo of his original graph from our old Bosch LPS dyno showing Exactly the same bhp and lbft!

Inefficiency and unlocking additional efficiency..Seat Leon Cupra 2.0TSI DSG OPF version in for stage 2 custom tuning se...
02/07/2026

Inefficiency and unlocking additional efficiency..

Seat Leon Cupra 2.0TSI DSG OPF version in for stage 2 custom tuning session.

We knew straight away that the hardware package would compromise the peak power potential at the top end.

Stock air box with the tiny tiny version stock rear exhaust section on this model.
(On the opf cars there's a few different factory exhaust configurations, and this unfortunately is the worst ones as you can see)

During tuning we noticed we had got the wastegate position to a level we were not happy with, we knew we were really forcing the turbo at the top end and achieving 375hp. The wastegate was at 17% opening, so lots of gas velocity and pressure speeding up the turbine wheel.

Instead of trying to force w***y waving numbers by turning up the mapping and boost with a closed wastegate, we look into where the physical inefficiency lay.

A quick back to back test was to just open up the lid of the stock air box, this test yeiled another 11+hp across the top end, with exactly the "same" boost levels BUT with the wastegate at 31% opening!

Close the air box and run again, we lost the power and the wastegate duty went back to 17%. We could see the effect with the inefficiency via the dyno induction kit vacuum sensors. With the air box closed the vacuum drawn was getting stronger and stronger with the rpm. Air box open zero vacuum drawn. We decided that the best route would be to reduce the vacuum by drilling the bottom of the air box to reduce the vacuum. We managed to reduce the vacuum drawn by over 80% allowing the wastegate to run at 30% opening, much more efficient and happier for the is38.

You can see on the logs and induction vacuum graph on the dyno the difference.

We left the settings at a efficient level at a lower bhp point, knowing that when the customer fits a r600 along with a 3" resonated cat back exhaust system, the final numbers will be at around 395-405hp without any additional tuning needed to get there.

We could have turned everything up trying to force the numbers on the day, some places would have given fake dyno numbers to keep the customer happy and make the tuning look better.

But the reality is there's hard physically inefficiency with certain hardware combinations which needs finding and common sense with the tuning approach.

Some will say, and my self "well a stock air box will do 400hp hp+" which is true on a different combined hardware package or a bigger turbo.

But at 375hp with 2500mb boost the stock air box starts to become an inefficiency as proven with this simple test.

There's no fixed power level for a stock air box or hardware as such, you could whack on a gtx3076r running 2.3bar boost at 500hp. But then fit an R600 run same 500hp power with 1.8bar or maintain 2.3bar and naturally unlock the inefficiency to see 580+hp!

Hardware is all about unlocking inefficiency when the hardware becomes an inefficiency.

The increased efficiency doesn't always show as a peak power number, as there's a lot more going on. But with good data logging you can see exactly what is going on with the hardware. The fun part of tuning is understanding what's going on , not whacking everything up to gas mark 10 with the software. Durability and reliability is more important than the final bhp.

Inefficient and efficiency are the two words I use most on a daily basis along with "getting the balance right"

Address

Unit 17 Alliance Close
Nuneaton
CV116SD

Opening Hours

Monday 8:30am - 5pm
Tuesday 8:30am - 6pm
Wednesday 8:30am - 6pm
Thursday 8:30am - 5pm
Friday 8:30am - 5pm

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