E85 Tuning on GTM Twin Turbo G35

As a repeat customer, we last saw this beautiful example of a street G35 about a year ago. At the time, he brought his built 3.5L VQ35 for a tune on his APS twin turbo kit. Over 500 whp was safely achieved, and the customer backed it up with several 11 second quarter mile passes. While the power level was certainly enjoyable, he craved more. This year, he returned with a new turbo kit, the GTM Stage 5 with twin GT30’s, a bigger fuel system, the CJ Motorsports twin pump hanger and 1200cc injectors, and 30 gallons of E85 gas fresh from the pump.

After battling a smoking problem with the turbo’s oil supply and some electrical problems, we were able to begin tuning. With Hal behind the keyboard, it did not take long to get starting and driveability cleaned up and move on to the power tuning. After a solid baseline tune was established on wastegate spring pressure, 13 psi, the Haltech boost control was enabled and a maximum of 630 whp was achieved before running out of injector duty cycle. It is true that E85 requires as much as 30-40% more fuel compared to gasoline, which is an important factor to consider when weighing alternative options to race gas. Our customer picked up his car and immediately headed down to a National Mustang meet to represent the Nissans.

Since being tuned, this G35 has run an impressive 11.0 at 134 mph in the quarter mile. Judging from the trap speed, we agree that this car has a quicker time in store, even at the same power level. With some upgraded axles and possibly race gas, we look forward to seeing this car running easily in the 10-second range!

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.

Wheel Weights for Common Aftermarket Volk Wheels (350Z/G35 Edition)

For the weight-conscious shopper out there, we’ve decided to compile a list of the most common aftermarket Volk wheels for the 350Z and G35 and their weights. Stay tuned for more editions for the GTR, EVO, and many other popular cars!

Volk CE28N 18×9.5: 16.76 lbs (7.60 kg)
Volk CE28N 18×10.5: 16.53 lbs (7.50 kg)
Volk CE28N 19×9.5: 20.61 lbs (9.35 kg)
Volk CE28N 19×10.5: 20.50 lbs (9.30 kg)

Volk RE30 18×9.5: 17.86 lbs (8.10 kg)
Volk RE30 18×10.5: 18.85 lbs (8.55 kg)
Volk RE30 19×9.0: 19.84 lbs (9.00 kg)
Volk RE30 19×10.0: 20.39 lbs (9.25 kg)
Volk RE30 19×11.0: 21.38 lbs (9.70 kg)

Volk TE37 18×9.5: 18.65 lbs (8.45 kg)
Volk TE37 18×10.5: 19.40 lbs (8.80 kg)
Volk TE37 19×9.5: 20.94 lbs (9.50 kg)
Volk TE37 19×10.5: 21.82 lbs (9.90 kg)

Volk SF Challenge 19×9.5: 26.79 lbs (12.15 kg)
Volk SF Challenge 19×10.5: 27.67 lbs (12.55 kg)

Volk GTS 19×9.5: 26.79 lbs (12.15 kg)
Volk GTS 19×10.5: 27.67 lbs (12.55 kg)

Volk GTV 19×9.5: 26.57 lbs (12.05 kg)
Volk GTV 19×10.5: 27.45 lbs (12.45 kg)

Nismo LM GT4 18×9.5: 18.51 lbs (8.40 kg)

350Z Stock weights:
Touring v1 18×8.0: 26.56 lbs (12.05 kg)
Track v1 18×8.0: 18.19 lbs (8.25 kg)
Track v1 18×8.5: 18.62 lbs (8.45 kg)
Touring v2 18×8.0: 24.40 lbs (11.05 kg)
Touring v2 18×8.5: 25.80 lbs (11.70 kg)
Track v2 18×9.0: 21.25 lbs (9.65 kg)
Track v2 19×10.0: 29.50 lbs (13.40 kg)

370Z Stock weights:
Sport 19×9.0: 23.20 lbs (10.52 kg)
Sport 19×10.0: 23.80 lbs (10.80 kg)