GMT stage 1 or 2

weiboy718

have you guys noticed the stage 1 upgrades utilizes the stage 2 intake piping and air filter? which means you probably still cannot run LTH?

^you see the pricing on the stg 2 upgrade?

Jamaica

ya a lot of people dont realize it. Thats been a topic discussed.

Ha price to upgrade....5500 oh my..

Z eliminator

Shumby your alive.

__________________
12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

Footloose301

How much boost are you running? I plan to do 7-8psi daily....

__________________

2010 40th Anniversary 370Z

Mkai0

Kirkster,

how much boost did you lose when you had the leak?

tomnavone

If I could do it over again I would go stg2. Even tho the press release for stg1 says power expansion is a simple 20 minute pulley change, I was informed by sam this isn't true and stg1 kit is already maxed out. 400hp is fun but I'm sure 500hp is a lot more fun

__________________
GTM Supercharger/HKS Camp2/Berk cbe/Motordyne art pipes/Hotchkis sways/ Eibach Springs/ Black Volk TE37/Bridgestone S-04
Powered by

Mike@GTM

To say that the Stage 1 Kit is maxed out isn’t exactly true.

We designed the Stage 1 kit with certain goals and it is exactly what we wanted it to be. We wanted a responsive system that has a clean under-hood appearance and we built the system around the car.

The thing that people often forget is that engineering is the art of balancing science with practicality and cost.

Practically, it is not possible to make a supercharger kit look as clean as ours and not modify the car in some way to achieve maximum power (other than adding brackets of course). The Stage 2 Supercharger Kit has that ability because it requires the use of polyurethane motor mounts specifically designed to give enough clearance to have an intake system that optimizes airflow into the supercharger.

The Stage 1 on the other hand had a parameter that had to be accounted for: have as little impact on the car as possible. That meant that there were some compromises we had to make and there were actually some advantages that came from those compromises. The Stage 1 is very responsive because the intake is not as optimized as the Stage 2 and must be spun to high rpm to make our power goal for the kit.

There is a brand new Nismo that we just got here in the shop that is getting our Stage 1 Supercharger kit with the Stage 2 compressor housing and intake. We’ll just call it Stage 1.5 for now. The results will show that the C38-81 supercharger unit is NOT maxed out in terms of horsepower.

It is true that our Supercharger kit allows the pulley to be changed easily. I did notice that the original wording in our press release might be interpreted as the Stage 1 supercharger having more power potential than supplied with a simple pulley swap. Well, with everyone and their brother wanting eleventy billion horsepower for $5 we eventually caved and put the smallest pulley on there that could be run safely. That said, I’ll edit the website and press release to make it less confusing.

Ultimately, however, the Stage 1 has a lot of area under the curve...even if it doesn't make as much power as the Stage 2.

travisjb

Mike or someone, please throw a link up here where the dyno plots for the S1 and S2 are posted... for those too lazy to search thx!

__________________
2009 370Z #104
*For Sale*

Nixlimited

Speaking of which, it would be great to have a posted STG 1 v STG 2 dyno plot to assess differences in area under the curve!

__________________
Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

Zat_Zuma

Yes that's what I want to accomplish and strive for with the meth injection ....... a 1.5 meth/SC ..... after I get my *ahem* issue resolved with my Z. The upgrade plan is under way with new CJM parts to be on order shortly.

Please post the results achieved with the Nismo 1.5.

Looking forward to what results can happen with a free breathing stage 1 and meth injection, drag radials and DSS axles.

It's going to be a interesting spring time

__________________
[B]2009 & 2017 370Z Touring Sport Autos SOLD

Kirkster

I am running 8.5psi in the summer and 9.8psi (10.3 max psi that I have seen) since the temps dropped below 55°

My boost would not go above 5.5psi with the coupler slipping partway off of the intercooler input. So roughly 3psi

__________________
Powertrain Warranty voided on 5/14/2011
Mod List:GTM Supercharger,SmartTop module, Oil Cooler, GT-R Start button, Nismo Exhaust, BC Racing ER Coilovers, Backup Camara
For eastwest:

weiboy718

^ how the hell do you make 9-10psi on the stage 1 kit? The most I made was 8.4 and sometimes it won't even get to 8psi.

shumby

i CAN GET 7.7 OUT OF MY 6.5 PULLY IN THE WINTER

__________________
Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

Kirkster

Don't have a good answer for you on that... All the beasts are a bit different...

In June I was running 8.2~8.7psi. Now I am hitting 9.6~10.3psi in the cold

My gauge records peak boost and lets me look at it at a later time so I usually check that to ensure that I don't have a boost leak before I get shut down the car.

I run her pretty hard all the time and am on the 91 octane map all the time, as I wanted a bit more safety as I always run 93 octane gas.

12K with the supercharger and she does not burn a drop of oil in 3500 miles

__________________
Powertrain Warranty voided on 5/14/2011
Mod List:GTM Supercharger,SmartTop module, Oil Cooler, GT-R Start button, Nismo Exhaust, BC Racing ER Coilovers, Backup Camara
For eastwest:

travisjb

^gee, good idea! :P

__________________
2009 370Z #104
*For Sale*