Auto go with a SC / Single Turbo. Manual go with a Twin / Single Turbo set up. You'll run into alot of lag with an auto running on a twin turbo set up if I recall. Also if you go with a turbo set up, I'd highly recommend forged internals.

 

build my engine why? do i need to upgrade more stuff?

 

jdmv35 has 391rwhp with that supercharger, so im like dang i think i wanna get that with the intercooler and hood =P

 

on another note.... what do you know about Prochargers products?

 

I think it's the other way round. The ST setup gives you more lag because it uses one big turbo which takes longer to spool up. The purpose of the TT setup is to reduce the lag by using two smaller quick spooling turbos.

 

Turbo spool has more to do with mass vs airflow. A single large turbo certainly would spool slower for a given amount of airflow. But 2 smaller turbos are using half the air. On a V or F configuration motor, 2 smaller turbos that have a combined airflow rating that is the same as a single large turbo with the same efficiency would provide better results because they are closer to the exhaust ports. A single turbo would require the exhaust gases from one bank of cylinders to be routed to the turbo. A longer pipe will provide more surface area for the heat to escape from. Heat is a very important source of energy for the turbo. A single turbo on an I-6 motor would not have this problem as all the exhaust ports are on one side of the motor and the turbo would sit close to all the ports.

 

This is true to an extent. Turbos generally use wastegates to control boost. These tend to be a bit sensitive to the environment around it. Boost consistency is good enough with a wastegate for most motors, but the current VQ's are a bit high strung with the high compression and relatively weak internals. Not to mention their detonation resistance is not great. Superchargers do have an advantage here in that their pressure ratios will be dead on with engine RPM.

However, I would try to determine the cause of death of the motors in question before jumping to conclusions as well. A poor fuel system or tuning can just as easily be the culprit. I will say, it would appear the S/C kits do seem to be more reliable comprehensively at the moment.

 

Was this a retort of some kind? If so, please elaborate.

 

Ckwik,

Thanks for your very informative response. Some of the responses from others were confusing and went against what I knew of turbos and superchargers. What about the types of SCs? Roots vs. Centrifugal? I was told the latter i.e. Vortech, would place less stress on the engine vs. a roots based configuration i.e. Stillen, though the Roots would give better low end performance (assuming you could handle the wheel spin).

C.

 

Here is my personal take on it:
stillen- safe, has a warranty, ugly hood, small gains not worth the money spent
ATI- blew up way too many engines in the beginning, not sure how they are now. wouldnt buy one.
vortech- owned one for a few months, but never installed it. IMO the best SC
greddy TT - good system, but needs some extras to optimize performance/safety.
APS- safe so far, good for up to 400 WHP, then needs complicated tuning to make more HP.

If you want around 350 WHP, go SC. If you want more, build your engine and get a TT.

 

That pretty much sums it up for me...

One more thing... There is soooooo much information on my350z.com Forced Induction Forum. You seriously owe it to yourself to spend many hours on there reading up on what has worked and what hasn't. You'll be able to learn from others mistakes and hopefully you won't repeat them yourself.

 

what is the website for purchasing vortech stuff?

 

What you need to do is your homework. I don't mean this with any dissrespect, but it's the only way I can put it...you are far too ignorant when it comes to this stuff for your (and your cars) own good. Do some research, ask more questions and understand this stuff before moving forward. If you visit the FI forum, there are plenty of ppl willing to assist with your questions.

And, as mentioned by S2020...you'll need an upgraded Valve body and torque converter to retain any reliability from your tranny.

 

You have a PM

 

I second Randy's position. Tuning your car to insane horsepower sounds cool, but when your tranny or engine blows, its gonna be an ugly day for you and your car might end up being worth nothing. End of the day, you might have been better off buying Z06 if you add up the costs of repairing it. I've been doing slow and careful research.... coming from the performance crazy Audi S4 folks, who report blown turbos and trannys often (B5 bodies for those purists who are about to point out that the new S4 has no turbos... those who don't do it the right way). Some of the folks here who tune their cars go the whole 9 yards, rebuilding internals and trannys. At the end of the day, you want power AND reliability. The 2 terms are oxymorons, but if I have to give up 30k to the engine's life for 100+ more horses, it might be acceptable. But if I give up 80-100k of the engine's life for more horses, I have to pause and consider.
Just my 2 cents.