Thanks mike for chimeing in on built motor question. I was wondering tho, is GTM going to be building long tube headers that would complement this kit or will the Fast Intentions Product be fine?

that's not true, I'm still hurting pretty bad hahaha

Well ya that's what happens when you get raped by stillen, jk lol

Ya, luckily GTM is my savior!

Good insight, but the only thing I question is the fact would it be financially worth it not to go with the Stage 2 kit? That all depends on the actual cost of the VVEL controller (answering my own question). Anytime you're dealing with tuning equipment it always costs damn near an arm and a leg. Plus you have to factor in someone who is competent enough to properly tune the vehicle or make minor adjustments.

If the controller is released I hope GTM has base maps for us in the event we don't have a trustworthy tuner.

:icon17: Im gonna do it, just waiting on all the variables making the desired result (on my part !GTM's :tup:)

So to comment on my other thread,

GTM SC Stg 2 + VVEL tuner = C6 Z06 Killer,,.,,,,.,,,., MAYBE!!


If so,

Where do I sign UP?

until you met a SC Z06 aka ZR1~~~jk

so has VVEL been adjusted at all yet? i dont mean is it ready for production of the controller but "in the works" leads me to think you have been able to start playing with it.....YES?

It's in the testing phase. It could still be a while before released, but knowing GTM... shouldn't be too long.

A stock C6 Z06 then yes.. but bolts on C6 Z06 im sorry but we dont have a chance

Well i have a few questions about that one as well if 500whp daily is the current safe build mark then i don't see superchargers going much further because you take the 430 available from a stage one kit and tack on the 50-70hp lost in driving said supercharger and the motor itself is actually seeing the load of a 480-500hp turbo motor less about 10-20% for the increased pumping losses and the heat wear on the exhaust side of the head. from what i've witnessed generally you can't push the internals to get the same whp from a supercharger that could from a turbo charger. And it isn't all about torque i would say it is all about cylinder pressures when you're talking about an 11:1 CP ratio. combustion heat and pressure, causing detonation are going to kill it long before the regular torque output of the setup will (not true with the de motors as they had bitch-rods). usually when judging between the two i like to go off system psi and air charge temp, so if the "safe" power level of TT setup is at 8 psi, and the air charge temps remain the same(intercooler and compressor efficiencies obviously), then i wouldn't try to push a supercharger setup much more than 10-20% over that so like 9-10 without more than one guy doing it first. now on the hr motors being able to run more psi safely with tuned valve timing to reduce the overlap, the same levels of power there should carry over between the engines do to the similarity of the build, less the increase in pressures for the half point of compression. Really there are quite a few unknowns on pushing a vhr supercharged as of yet. on another angle though the stage 2 could be worth the price if there is enough of a ceiling above the stage 1 blower and the kit price is close between the two. if an hr can run 14psi safely then it is a good bet that we should be able to get close to 12 with our compression maybe more because our heads have a smaller hotspot around the spark plug. then it is just a matter of making that 50-80 hp cost effective to the consumer in the upgrade price. on the same token the vvel controller would have to cost at least as much as the stage 2 upgrade or people will just buy the vvel controller and see the same gains for less jeopardizing stage 2 sales

It might be better to sell the -91 compressor as a stage 3 upgrade once the vvel controller is completed in that case, and sell the stage one plus vvel as the stage2.

Although a lot of what you're saying is true, nothing can be justified until the VVEL is cracked and the cost of the controller is listed. I have a feeling the controller is going to be a lot more expensive then what people think. I still say the extra $500 can still justify the cost of the stage 2 for a pure plug and play kit.

Of course my 2 cents

Long time lurker here. I'm a few months away from my engineering degree and have been looking heavily into getting a lightly used 370z as a replacement for my modified WRX. (they are fun, but just not as sexy as a 370z IMO....)

I've been keeping tabs on this VVEL development for quite some time, and have done some research on the matter. Very interested in how this plays out, as I would love to have about 350 to the wheels NA in a Z. Not looking to go FI, at least for now.

I have an idea that has been floating around in my head for a while. Why not compare the VVEL settings for the NISMO and the normal Z? Since the NISMO has the better intake and exhaust, the engineers "SHOULD" have optimized the VVEL for the increased volumetric efficiency of the system. Perhaps this comparison would then tell us what needs to be changed in NA applications when even further increases in VE are realized.

Who knows if they actually did modify the VVEL system for the NISMO, but its worth a look IMO, now that GTM has access to it.

I'm also wondering if the VVEL system could modified to two different sections.
<3000 RPMish optimize the VVEL on NA applications for greatest fuel efficiency
>3000 RPM adjust for optimum power?

The opensource nature, and ease with which the Subaru community is able to modify the WRX/STI is incredible, and hopefully someday,some genius programmers/coders will accomplish for Nissan's what romraider has accomplished for subarus.

In for results, and discussion! (P.S. love the technical nature of this discussion!)

The 370z Nismo doesn't have higher/lower intake or exhaust duration in the VVEL system. The only difference is the Nismo comes with an "aftermarket" exhaust that gives out the extra 20hp difference, as far as engine performance goes compared to the base 370z.

Now, if you're talking about the 350z Nismo that's a different story.

How was the 350z nismo different? ^ya the 370z nismo only has the Nismo exhaust + a slight ecu tweak for the extra 18hp.

It doesn't use the VVEL system.

holy now we off topic hard core different thread guys no the vvel is not changed for the nismo AFAIK, and I'm not gonna comment on the Gtm controller but i'm sure from them awesomeness is in store.

Sweet when I win the win for life lottery I will definetly get the stage 2 on my Z.
[:

if you did win the lottery you will probably be driving something else. :icon18:

Na I think I'll still keep my 370Z.
First real sports car. ftw :driving:

Sam , How is " our car coming along ".
The temp is -27 here today, with lots of snow. Im sure that it would make lots of RWHP on the dyno today.

Z

Did I miss something? Is the GTM Stage 2 SC kit available?

Not for another 2-3 months, we are all waiting for reviews/results/dynos

hmm on GTMs website there is an option to buy the stage 2 kit.
GTM Motorsports*::*FORCED INDUCTION*::*Supercharger Kits*::*GTM 370Z SUPERCHARGER KIT (TURN KEY)
GTM has it listed, maybe pre orders?

The stage 2 kit has been listed on their website for months now. They have to go back in and redesign the kit to fit the bigger housing in the engine bay.

I thought I'll just share with you guys pics of our stage 2 supercharger head unit the C38-91

Sam

Nice!!!!

Can you take a picture with SuperCharge unit stage 1 and 2 side by side to see the different please?

Thanks.

I've been waiting 11 months to see this SC. Hope fully my kit will be sent to me by the end of March. The " Z " can not wait to take it down the 1/4 drag strip. 11's here we come. Thank you Sam for posting the picture. This thing has to make atleast 460 rwhp with my special intake manifold " according to Sam ".

Z

March can't come soon enough, lol

I just drove dreamers stg1 GTM SC kit last night! It has FI LTH's and it is hitting 8psi on the dot! Its a rocket for sure, im sure the Stg2 kit will be even meaner.

How did it pull, plenty of torque?

Ooooh.. So what was the fix? Id love some more details on this!:tup:

Awesome, that's great for Dreamer I know he stayed patient for a long time! Definitely need more info on this!

More info soon guys, hoping to get on a dyno this week but work plus school basically kills any free time during the day. I leave you with a picture of a nice pull JB did in my car the other night:
http://lh3.ggpht.com/_wgFNZZBDMaE/TU...128_205058.jpg

Very cool. Now reply to my PM please :hello:

can not wait till march. im buyin one

My SC fund is growing. Hopefully I will be ready by June.

Ooooooooooooh man! STG2 seems so tempting. Maybe I'll sell my Mines spoiler for the upgrade from STG1...

I'll buy it , lol