Injected Powered 4.2L 350Z Blasts Off
This customer’s car has been years in the making, but all of the time invested is beginning to pay off! Over a year ago, we began working with this customer after another shop was unsuccessful in “trying new things” in a stroked VQ35 package that had been sold to him. After visiting our facility, seeing how we operate, and taking a look at our success in drag racing, he decided to go with one of our stroker VQ35 motors. This was just the beginning of his journey, as he decided to bypass his current Greddy turbo kit and go with a custom setup of twin 62mm turbos, fabricated by a local shop.
After a Haltech was installed and tuned by his local tuner, In Tune Motor Sports, clutch issues were found on the first trip to the drag strip. After our recommendation for a Tilton triple cerametallic clutch, widely used in the fastest Supras and growing popular in the VQ world, we promptly shipped out a kit for him to install. At the very next trip to the drag strip, he accomplished a 6.3 second pass in the 1/8th mile, which is good enough for a 9 second pass down the quarter mile.
Now that some setup bugs have been resolved, we look forward to turning this engine up on a high boost tune and a trip to the quarter mile drag strip! We would also like to wish a congratulations for sticking with the project and seeing your hard work pay off. Featured below is one of the low 6-second runs towards the end of the day. Although a time slip was not readily available at the time of this post, 60′ times reached as low as 1.38.
Turbonetics Low vs High Boost
Vince’s car made for an interesting case study on the effects of higher boost on some twin turbo kits for the VQ35. This customer had decided to upgrade his injectors to the Deatschwerks drop-in 600cc’s before his tuning session. As a stocking dealer for Deatschwerks, and other injectors, this was not a problem to complete the install and immediately begin the tuning.
After reaching sufficient gains at his current 8 psi, he requested us to turn up the boost to see if more power could be made. While a bit more torque was made throughout the powerband, this dyno shows that a 3 psi gain in boost resulted in more power earlier, but a significant drop off in top-end power. The Turbonetics kit has been known for providing a nice power curve in its’ off the shelf configuration, but it begins to choke the power at higher boost. Both maps were included for the customer to decide which he preferred better.
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.
Infiniti G35 + APS Twin Turbos + Stock VQ35DE = 402whp
Over the New Years holiday we opened the doors to a special out-of-town Infiniti owner. After a 600 mile drive on a base map, the car made it to our facility for a tune on the newly installed Haltech Platinum 350Z EMS. The car was outfitted with the new APS Twin Turbo tuner kit for G35 and an APS Tall Boy Intake Plenum. Props to the owner for installing the turbo kit and other mods himself, very nice work! The APS tuner kit comes without fuel and engine management, so the customer installed Deatschwerks 600cc injectors, a Walbro fuel pump, and of course, the Haltech Platinum 350Z plug and play standalone with boost control solenoid.
After a quick change to NGK Iridium 1-step colder spark plugs with proper gap, Hal was able to quickly achieve the goal of ~400whp on our Dyno Dynamics dynamometer at 10psi. As seen in the dyno chart below, the VQ35DE spools the APS twin turbo setup quickly and gives this G35 a nice strong powerband. The G35 produces more than 300ft/lb of torque from 2900rpm to redline.
Injected Performance 350Z in Turbo Magazine (Again)
The Injected Performance Drag 350Z was able to make an encore appearance in the pages of November 2008’s Turbo Magazine. This glimpse into the magazine shows the Injected Performance 350Z doing a nice smoky burnout during Battle of the Imports (BOTI) at MIR in Maryland recently.
