GTM Supercharger Stage 1 w/ F.I. LTH

RCZ

Sorry to respectfully disagree.

So...GTM advertised 460whp at 8psi on 93 OCT w/ 2.5" exhaust and 420whp @ 8psi with stock exhaust in their press release and Dreamer made 394whp with longtube headers and full exhaust.

F.I. Inc.

That is what they claimed but has anyone with their kit that has done an independent dyno ever achieved that? If so, it would be news to me! From what you wrote the numbers do not add up.

Boost is back pressure. The stock exhaust is as restrictive as it gets. When you relieve back pressure in a force inducted application, you have a PSI drop off but you pick up torque and power.

Now it seems like this SC is capped @ 8 PSI. What that tells me is that no matter what you do to it, it cannot move enough volume to move more air than 8 PSI.

Put the larger stage II or III head unit on it create more volume and turn the boost up, period!

The garbage idea of leaving a stock exhaust on a force inducted car is one of the most outrageous things that I have ever heard...

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Fezzik

I did. AND i have stock exhuast on from the convertible which is supposed to be just a little more restrictive. Nothing else done to it. I dont want to get a louder exhaust becuase its already really loud with the top down.
OH i got
430HP/ 340Tq

frost

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Mike@GTM

I'm not sure why you keep saying we advertise our kit as 460whp. We have said this time and again, not to mention it is on our website, that our Stage 1 Supercharger kit is rated as 500hp. The reason why we rate it in hp, is that there are too many variables involved in wheel horsepower numbers: temperature, elevation, gas quality, dyno type (and dyno setup), and the car itself.

So far, we have many customers that have installed the system and they are on target for the average horsepower we anticipated. At no point did we ever say that our kit is going to make 460whp.

Take the same exact supercharger and install it on an engine that doesn't have crazy overlap (read VQ35HR), and the kit is capable of making 487whp without any special intakes and on stock cats and HKS cat-back exhaust. That's with full control over cam timing (intake and exhaust).

christian370z

Do you think those power levels will be unlocked on the VQ37 with your VVEL controller?

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Lug

I think he's geting it from the first SC anouncment page:

GTM Performance Engineering 370Z SUPERCHARGER KIT PRESS RELEASE

toward the bottom of the page.
The mistake he made is that you do claim 468 BHP, not whp. To be fair to him, you do show 452 hp on a stg1 graph @ 8 lbs that seems to indicate whp (never seen BHP displayed on an actual dynograph before). Mostly, just a misunderstanding.

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Reality

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efuseakay

Um. Ok?

GTM Performance Engineering 370Z SUPERCHARGER KIT PRESS RELEASE

Really dude... you're getting very, very annoying.