DIY Stillen Supercharger

mults

^

Goes for me as well

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40th Anniversary 'Z', 312.06HP/260.58TQ (Dynosty EcuTek Tune)
Build Date/Number: 1/27/2010 #706
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wortmeister

The questions are answered in the next to last paragraph in the update. I guess I could have just said, "I'm as happy with it as a pig in feculence."

theDreamer

You might want to head over to this section for more information on a Stillen SC or forced induction in general.
Forced Induction - Nissan 370Z Forum

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wortmeister

Sorry about the multiple posts. Happened because I wanted to ensure info was in the DIY forum. I'm retired, 70 years old, and the Z is my daily driver. Rather than dyno numbers, my advocacy of the Stillen kit is based on seat-of-the-pants experience with the difference it makes in real-world driving performance. Best I can describe it, it's like installing another VQ37 in the trunk. I would never have believed a little spinning compressor could make such a difference. The only downside: the low-ratio first gear in the auto trans requires a slow foot on the gas pedal for launches. Even with a limited-slip diff and 9" wide Potenzas, the rear tires melt if you stab the throttle. I'm still learning how fast the pedal can be depressed to get the fastest launch.

I chose the Stillen kit over other's because I wanted reliability, rather than the last horse that could be extracted just before the engine blew. Summer temps in Phoenix regularly exceed 110 degrees, and having a huge air-air intercooler obstructing the entire radiator didn't seem a wise plan. Stillen's air-water intercooler also has advantage of cooling the intake charge immediately prior to entering the cylinders. The cooler the charge, the less chance of supercharging's nemesis: engine-destroying detonation. The flow restriction imposed by routing the entire intake charge through an air-air intercooler requires turning the supercharger faster to attain a given boost level, which can't help the supercharger itself last longer. Stillen's shorter after-supercharger ducting, unrestricted by a full-flow air-air intercooler, also reduces dead space which must be re-pressurized when the throttles are fully opened suddenly, making full power available more quickly.

RCZ

wortmeister: Thanks very much for the information and trying to help people out. There are a lot of people who appreciate your comments on here, don't pay attention to this guy who is bitter because his kit didn't work for whatever reason.

Congrats on the car and the kit. Don't get caught up in a numbers game like a lot of people here do.

Nismoracer

OP is it true you no longer can run the car with VDC on with the SC install? If so do you have to turn it off every time you get in the car or will it stay off once you turn it off?

Osiris

The kit runs fine with VDC on or off.

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wortmeister

The VDC has its own separate CPU, and is unaffected by the Stillen/UpRev -supplied ECU supercharger flash.The VDC can be disengaged, or engaged, via the factory button switch--with or without a supercharger installed. My problem post supercharger installation is that the rear braking force limiting wheelspin on launch, controlled by the VDC computer, is inadequate to prevent frying the rear tires, even if the pedal is stabbed from a 20 mph rolling start. This may be due, in part, to the torque multiplication of the 16.53 final drive ratio with the auto trans' first gear. The higher 1st-gear final drive (14.01)with the 6 speed manual might lessen the problem.

dal1307

I have less problems in 1st with my 5AT (08 G37s) with VDC on. The VDC is continually kicking on and off if I get on it hard though. I don't know what the difference in ratios is between the 7AT and 5AT. However, if I powerbrake to anywhere above 2200 RPM on launch with the VDC off it will spin all he way through 1st if I keep the pedal down. I am still playing around trying to find the best launch method. I am alson on stock sized NITTO Invos which don't hook up very well.

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2008 G37s 5AT, Stillen SC, Stillen CBE, Stillen tranny cooler, DBA 5000 front/4000 rear, Stillen sways, Tein SS-P coilovers, SPC front & rear control arms, Goodridge lines