More Power: Derek’s R35 GT-R

Filed under: Featured Cars and Projects,Performance,R35
by Alvin G @ 8:45 pm on October 21, 2022

At Z Car Garage we are fortunate to be a part of our client’s sports car journeys. We first met Derek Y in 2014 when we worked on his 2005 Infiniti G35 back. A few years passed by and he visited us with his latest Nissan, this 2015 GT-R:

The R35 had only 11k miles and ZCG installed a host of power upgrades from AMS, EcuTek, SpecialtyZ, Turbosmart and more. You can read about this work from 2019, including the E85 flex-fuel and exhaust upgrades all in this previous blog post.

More Power and a New Look

Derek latest visit was earlier this year for dyno tuning, interior items and AirLift installation. When it arrived at the shop this R35 sported a complete Varis Kamikaze-R Ver. 2 widebody “Super Sonic” kit and Varis Kamikaze-R Ver. 2 Vented Carbon hood. The Air Lift 3H air suspension strut kit was installed with polished 5 gallon tank.

We ran all of the air lines, checked ride height and clearances for the slick Advan R6 Candy Red wheels (20×11 +15 front – 20×12+20 rear) with Toyo R888R tires (305/35/20 Front – 325/30/20 Rear), more installation photos in the gallery below:

We also installed a new, Overtake 100-V Saikou Exhaust:

A few minor items like a new battery, TPMS sensors in the new wheels and a final health check for Derek’s VR30DETT…but first we performed a re-tune with Ecutek for even more power. Our last dyno session yielded 612hp/604tq to the wheels and it left with 640hp/622tq. What’s impressive is that this remains a supercar that’s easy to to drive:

Enjoy these dyno runs:

Interior

Derek had several interior items for us to install including: Mines Steering Wheel, Nismo Cluster, Nismo cluster shroud and shiftter paddles:

Derek is happy with the latest upgrades to the R35:

“I have been going to Rob for a while now, he worked on my car october 2019 (bolt on and e85 work done) and again recently with a new tune and air suspension and some interior mods. The work is always great its making more power now and more responsive linear power.”

Here are the SpecialtyZ 3″ intakes and AMS front-mount intercooler being installed:

More engine bay work including the AMS crankcase breather setup, ID 1300cc injectors (plus DW fuel pump upgrade), Turbosmart BOVs and a SpecialtyZ Flex-Fuel kit:

AMS crankcase breather being plumbed:

Stock vs Turbosmart BOV:

On the lift, AMS cat-less downpipes are installed:

At first glance it is difficult to catch all of the power upgrades in the engine bay, Stock (L) vs Modified (R)

Derek also needed new tires so we mounted fresh Michelin Pilot Sport4S sized 245/40/20 and 285/35/ 20.

Dyno Tuning

Back in 2019 , Rob dyno tuned the GT-R using an EcuTek flash and Derek also received a USB dongle for datalogging. Baseline power was 495hp/446tq with final numbers of 612hp/604tq to the wheels on E85:

A few plots showing the tuning session: Baseline to 91 octane tune with gains of 65hp/93tq (Left), and the final E85 tune for even more gains of 52hp/51tq (Right):