G35 with Powerlab GT35R becomes 400+whp daily driver

A 2006 Infiniti G35 Coupe was dropped off at the Injected Performance bay doors, equipped with a Powerlab GT35R turbo kit, Haltech Platinum 350Z EMS, and Deatschwerks 600cc injectors. The request was simple: check over the power tune and clean up the driving/cruising tune.

The initial dyno tests revealed this was one strong VQ35DE, breaking 440whp as it came to us at 10psi. The 2006 G35 has a Revup VQ35, though the tune had exhaust cam timing disabled. We enabled cam timing,  picked up significant midrange power, and fixed the top end loss it had shown on the first dyno pull. At that point, the VQ35DE was outputting over 450whp at 10psi. This car was still running on the stock engine, and needed to stay that way for some time - so the boost was decreased to 8psi, and the tune was softened up. The final outcome was a safe 424whp.

The car came to us overly rich during cruising, which was quickly remedied by a proper tune on our load bearing Dyno Dynamics and followed up by a street test. A wideband air fuel sensor was wired to the Haltech and O2 correction was enabled to ensure things would continue to run in top form. The customer requested the speed limiter be removed, idle decreased (from a previous increase), and CEL removed - simple tasks all handled by the Injected Performance VQ35DE ECU Reflash. After customer pickup, the car made a 5 hour drive home where it reportedly achieved 26-28mpg.

Overall impressions of the Powerlab GT35R turbo kit are positive. It is one fast spooling kit; able to achieve full boost before 2900rpm and still make impressive top end power. Check out the pictures and video below.