10 PSI is goog to go on the bottom end? Sounds like some folks are going to need to get some forged internals................namely me. Why did you do this to me GTM? I thought I was all set to go with my F/I build and then you spring this on me, lol.

Because stage 1 is within its efficiency range at 8PSI and stage 2 is at 10PSI, it is designed to show you how a stage 2 kit can go farther than a stage 1.
Which is also why Sam said the stage 2 does not need a smaller pulley as it did not show any increase in power, similar with the stage 1.

I thought the motor can hold up to 9psi safely, since I have LTH's it might drop the psi but still am curious

No one can give you a number of "maximum safe boost" because theres no way to really know how long the internals will last and peoples definition of "safe" varies. We know that 8psi seems ok to run for long term, 10psi shouldn't be much worse. Sam/GTM seem to plan on running 10psi here, so they feel its a safe enough level for the engine to last reasonably long with their tuning.

It has more to do with the supercharger being maxed out ,and to much over lap. The stage 2 flows 11% more than the stage 1, if you compare the two dyno charts that Sam posted it adds up to that.

I believe the issue with the STG 1 blower was that it couldn't get up that high reliably because it flows less and because of the VVEL overlap issue. That's why, as Sam has pointed out, the STG 1 blower on a 350Z made more HP.

Not bad at all, Couple hours worth of work .

Sam

Looking forward to see how this kit performs with GT-R manifold and VVEL tuning. Not to mention an exhaust and HFC's, test pipes, or headers.

That is what I am saying, the efficiency range of the stage 1 is at its max. So trying to run a higher PSI or a lower PSI, on stage 2, is not a worthwhile test.

It can be done with the Stage 2 unit it would just need to have a bigger pulley to slow the unit down.

I do see you point now however, with both units using the same pulley now it doesnt make sense.

What part of "if possible" from my post above did you not understand?

I am looking into learning the 3.7's "potential" more and figured what you had posted above. But again a stage 2 @ 8psi would be a nice comparison.

Again, read the thread.
Not going to muddy up this thread.

I understand what your talking about Alberto Sam is the only one that can do that though.

Ugh! I stay off of the forums for 24 hours and I miss this thread. Andrew had to tell me about it. The "lower" power car Sam has is a G not a Z. He using a couple of cars for testing the Stage 2, mine being one of them. Went to GTM today. It's the home stretch for the S2!!!! Whew!! My patience was wearing thin (shut up Andrew!!), poor Sam for having to deal with me too. Sam thinks my car should be done within 2 weeks (again SHUT UP ANDREW!!!! :p). I'm using my ipad, so I'm not sure I can post pics from here. Any ideas, anyone?
:excited::excited::excited::excited::excited:
:happydance::happydance::happydance::happydance:

Put the pics on a hosted site or up load them on your forum account. Then paste the code. Boom, Done.

hahahah bastard...

Im exited to see what GTM is bringing to the table.

Well you guys leave Sam alone so that he can finnish the SC for the 370z.
He needs to be left a lone so that he can finnish the kit.
That way I will get my SC and kick a GTR at the drag strip.
thanks

Z

:icon18: :tup:

lol

if you beat a GTR it will be shock to us all. That would something worth seeing.

Right now a stock 2010 gtr runs the 1/4 in 11.75. My N/A 7 AT goes 12.42 with 309 rwhp. bump it to 470 rwhp and my car is light 3372 lb with me in it.
I can not wait till I race one.
" soon to be a GTR's worst night mare in the 1.4 mile."
Ask Sam about my car .

ya we have talked. We will see.

if by worst nightmare you mean "slightly faster than a stock GTR in the 1/4 mile", then sure

was this done on a dynojet or mustang dyno?

We will see about that, not being rude cause I hope that 470whp puts a GTR down. Im just optimistic. :ugh2:

That would be nice to see. Most likely the stage 2 SC @ 8lbs. Will be very close to the stage 1.
Each stage kit shows about a 7% increase HP per pound of boost.

Sam I saw in another thread that you were thinking of meth or water injection (correct me if im wrong) on the Stage 2 kit? Were these numbers with or without that? Thanks!

Sam:

Will the differences in the Stage 2 cause issues with a 34 row oil cooler installation? Also, do you plan on doing any tests w/ F.I. LTHs? Let me know because I am about to send my ride off to Zerolift for an install. If there will be significant time before the kit is ready, I will just move forward with the Stage 2 TT install that we talked about. Thanks...

Rob

That should be a no brainer :tup:

I gotta check though. We don't know what has changed in reference to piping and mounting location. Even with the S1, the 34 Row barely made it in there.............I just thought I would ask.

Does anyone remember which oil cooler Sam said would fit with the stage 2 kit, I can't seem to remember :(

Soon enough. Still in the testing phase with stage 2. But you will have those numbers soon.

can someone confirm which dyno was used? I'm asking 'cause from my experience there's a 50-60whp difference between a mustang dyno and dynojet. Just trying to get an accurate comparison to where i'm at with mine.

You can't compare just one Dyno Manufacturer vs. another. Unless a dyno is properly calibrated, numbers are all over the place. I've seen huge differences on my Z on different dynos from the same manufacturer.

i'm pretty sure it's a DJ. i didn't notice they have a mustang there

Dynojet 248
http://www.gtmotorsports.com/pages.php?pageid=40

be that as it may, mustang dynos typically result in lower numbers.

It's soo funny that no one can just answer a question anymore, lol I understand what your trying to say osiris, I wish I knew the answer, I'd just tell you.

Update from GTM's website: Dyno Center
In ground all wheel drive dynometer, one of the tools used here at GTM to get your high performance machine tuned to perfection. Using a Dynojet 248 and 224 dynometer we are able to tune your car with consistent results and provide you with a dynograph that cannot be altered by any type of corrections.

Next to our Dynojet we have a pit ready to go for a DynoDynamics load based dynometer that we will soon be adding to our array of equipment, along with a SuperFlow engine dynometer. This way we will have the capability of tuning an engine on the dyno, and ship it anywhere in the world - ready to drop in.

thanks everyone for the info. now i know how to make my comparrison. :tup:

No problem, glad to hear that info helped you....rep?