Input from those who have SC their 370
 

Hey guys. I am not trying to start another useless thread so hopefully I get some good input from this. Currently I am overseas and I am already planning what to do with my Z but I am at a loss right now. At first I was going to go full bolt ons with a 100 wet shot. Just recently I changed my mind and decided to go F/I.

I want to hear from those who have S/C their Z. GTM/Stillen users. I will greatly appreciate your input on the pro's and con's.

My current Z only has drop in K&N air filters and a Stillen Underdrive Pulley

The modification that I am sure to add is a Boombop shop full catback exhaust.

I have to rework my list now that I am going to S/C it but I would like to know what parts have you replaced if any? i.e. injectors and fuel pump.
From what I read on the forum with the GTM setup you need to stay stock cats. Anybody proved that wrong?

My goal is to get at least 450 at the wheels. So please any and all input I will greatly appreciate it fellas.

Glad you did the right decision ;)

IF you want "al least" 450 HP, I suggest you to wait few more month, and here is why

VVEL is not cracked yet, GTM SC Stage II is not out yet :)

Running berk hfc on gtm stage 1 sc. Only 1000 miles so far

Well I got a few months till I get home so I can wait some. Any clue as to when the new kit will come out? What have you seen for results on the Stage 1?

What are you putting down on whp and tq if you don't mind? Any track times?

why dont u you go TT ? just woundering?

Well it did cross my mind. I talked to my buddy about it who is a pretty good guru on vehicles and fyi he will be installing whatever I plan to do on my vehicle. I asked him about it and did some research and I have come to the conclusion that going SC with my driving habits will better suit my vehicle as far as longevity goes. I know I know it is a hear say thing on that, if I pegged my car out everyday of course it will rag it out more. Not to mention bang for buck, that cost is lower and I do not plan to go balls out. I have a goal set for "now" so that is why I chose SC.

Care to comment on the subject?:tup:

You're going to get a lot of people telling you the GTM kit is better on this board. Lots of people had issues with the Stillen one for some reason or another. I had good luck with the Stillen and make 450whp(dynojet) all day long with 0 issues. Personally, I think that if you want 450whp on a mustang dyno, you're not going to get that from an SC kit...you want a TT.

I think I've essentially maxed out the stillen SC at 9psi. I guess I could go 10 psi and make like 465-470, but at the expense of safety...whats the point.

Now from your experience, which would you say would be suited for a daily driver? Or does that just depend on the driver? I am a private security contractor so when I come home I tend to drive up and down the east coast for a month visiting family and then I am gone again for a while.

Also nice avatar LOL I had to do a double take :bowrofl:

My avatar is real, thats a single seater..just happens to be red and has a big wing like the current F1 cars. Its just a normal single seater...I have a video on youtube you can see me racing it on track...those things are fast...

You mean between turbo and sc? For daily driving it really makes no difference...honestly youre not going to push the car hard enough to where it becomes an issue. Turbo will give you lots of torque and power and at least the GTM TT, I know, drives very nicely when you're just cruising around. The SC does too, but the power delivery is more linear. The SC has much less torque and will strain the engine and drivetrain a lot less than the TT will. If you're thinking longevity, SC is the way to go...but since you're not tracking or driving it too often then you'd be perfectly fine with the TT.

The TT has greater power potential and will make more power at the same boost level that a sc would. The reason for that is the amount of flow and the lack of parasitic loss associated with driving the sc unit.

In other words...if you want a crazy animal with big hp, get the tt, but remember theres a bigger chance to break things. If you want linear, smooth power thats easier on the car, go sc. Both have their pros and cons.

Ya I am thinking more of longevity b/c eventually I will be in the states more b/c I can't do this job forever. Maybe I'll just buy another Z later down the road and TT it but for now I will stick with the SC. So what did you put down on a dyno and track times? O thanks by the way for all the input I am happy to see someone popping in on this subject.

I put down 455hp/335wtq on a Dynojet (same dyno that gtm and stillen use) and ~400whp/290wtq on a Mustang Dyno.

FYI I dynoed in at 256whp stock on that same Mustang Dyno...

I'm sure the GTM SC guys will chime in soon enough with their results.

Ya the Mustang Dyno's I hear are generally lower. I got 285 base from a dynojet

YouTube - 2009 Nissan 370z 6mt Touring w/ Sports Package

If you pause it at 16 seconds you can see the numbers better.

I have the GTM supercharger. I got 430whp/340tq. THere are people like RCZ that have had success with the stillen supercharger, but also some that have had problems. I would do more research on this very forum on the 2 and then ask more questions after you done a few days to weeks of reading on here, and be wary of questions b/c it can get out of hand quickly on here.

I previously had Stillen kit and switched to GTM kit recently

Stillen kit made 390ish (can't remember exactly)whp and 288tq
GTM kit made 395 and 345tq
Both on 91 octane.

with the kit u have now , is it possiable to have stock back muffler with high flow cats and 3inch custom pipes ! how does it do in the hot summer ? any coolant upgrades ! thanks

Your not close to maxing out that blower there are a few thing that you can do to bring up boost and make more power safely. This has been done before just on 350z's and not 370z's I should have some results soon.

To the OP most people on this board have the GTM kit than the Stillen kit due to the tuning issues that some people have had with the Stillen kit.The info is out there if you go with the Stillen kit make sure you get a custom tune.

well.. all i can say is good luck in any route you will choose ,
:)

Ya I know I have been looking into both but I wanted to hear from people who have actually purchased both or one of them just to see what they have experienced from it. I would like this to be more of a this is what I have and how I feel about it kind of post, I just hope it doesn't turn into a disaster like the Motordyne M37 did LOL:driving:

Ya I am trying to stay away from specific questions just more of what is your personal opinion on what you have. Then the normal whp/tq and track times if any. I have seen some of these threads get way out of control and takes forever just to get some real information.

No no, all I meant was that I don't think the kit could make any more power at 9psi. Perhaps if I got longtubes and those could flow a bit more. I know the blower can do a lot more, but the point im trying to make is that you have to push the sc unit past 9psi if you want to make more than 400 on a mustangdyne dyno.

Its all about the tune

I have stillen with no cats and custom tune and am enjoying it with no complaints. The GTM is in the better part of there S/C curve so they make better power and Sam seems to really back there product and stand behind it. I will not give Stillen that kind of credit. The Stillen blower is barely in the curve so a pulley change could make huge gains since it is good for a max of 22 psi according to vortex information. Right now I would recommend GTM because it appears like they are sticking around for a long time.

i thought the max was at 17psi. yeah, the curve on the Stillen kit is pretty weak. by upgrading to more boost means more risk of breaking something sooner.