Originally Posted by Zsteve (Post 664700)

yea I would think they would similar and was wondering why one is good and theother isnt.

Originally Posted by SAM@GTM (Post 664771)

When it comes to the difference between the GTM and the stillen kit in term of software and tuning, the only difference is value. with the GTM kit you get everything that uprev offers. You can flash your ecu you can data log you can check for codes and if you decide to get a custom tune all you have to do is go to a pro dealer and just pay for the custom tun it self, your ecu is already licensed and any uprev tuner can tune it, you can even tune it yourself if decide to buy the tuner version of the software and then you will have the same access to all the tables that i have access to . You just have to know what to do .

Now when you buy the stillen kit, you can only flash the ecu with the tune that was given to you, you can not data log, you can not do anything else . And in the event that you want a custom tune then you will have to pay again to licensed the ecu in a matter of fact no other up rev dealer can tune the car with out licensing the ecu from scratch .

Sam

Originally Posted by Zsteve (Post 664693)

so is the tune between the two that different?

Originally Posted by LateralG'z (Post 664666)

That sucks sort of that each stage upgrade requires that you have to due all that work for more power. Stillen's SC compressor is rated to 700HP so all you have to due is change the pulley and tune to make the more HP and TQ not rebuild the kit.

Originally Posted by LateralG'z (Post 664650)

GT Motorsports: 370Z Supercharger system development
We are please to announce The GTM supercharger system Development for the 370Z . The GTM supercharged 370z project was under way back in the begging of the year .

Since we are completely done with our twin turbo system development that was released last month, We will be focusing on the the supercharged system. We are committed and planing on displaying both of our force induction system Solution for the 370Z @ sema 2009 .

Our GTM supercharger system will be utilizing the Rotrex C38 supercharger, The Key to the Rotrex supercharger's unique compactness, efficiency, low noise and reliability is its state of the art traction drive technology.

Great speeds and low noise are just some of the advantages of traction drives over traditional gear transmissions. Traction drives transmit power through friction forces between its rolling elements.

The Rotrex patented traction drive uses an elastic annulus with a small pre-span to secure contact between the roller planets and the sun shaft with a reasonable force. The patented "ramp effect" increases efficiency and reliability in the transmission by regulating the torque transfer capability on demand through self-adjusting planet geometry.

To enhance performance, the Rotrex traction drive uses a special traction fluid. These fluids are a new family of synthetic hydrocarbon oils and greases offering a series of unique performance advantages. Developed specially for its use in Rotrex superchargers, the SX100 momentarily increases viscosity under high surface pressure, enhancing the traction drive performance by securing the optimum friction between rolling elements while cooling and protecting the system.

This traction drive combined with the latest technology in centrifugal compression, characterized by high adiabatic efficiency and low noise, gives Rotrex superchargers an exceptional competitive edge over any other forced induction solution.

The GTM Supercharger Will Have three different stages to offer

Stage one will come with C38-61 Trim up to 550 HP
Stage two will come with C38-71 trim up to 590 HP
Sage three will come with C38-81 trim up to 630 HP

Here is some pics of the the Rotrex C38-61

Go read SAM's Supercharger announcement.

Originally Posted by SAM@GTM (Post 423546)

(GTM Performance Engineering 370Z SUPERCHARGER KIT PRESS ELEASE)
We are please to announce the GTM supercharger system for the 370Z. Our GTM supercharger system will be utilizing the Rotrex C38 supercharger, The Key to the Rotrex supercharger is unique compactness, efficiency, low noise and reliability and its state of the art traction drive technology.

Great speeds and low noise are just some of the advantages of traction drives over traditional gear transmissions. Traction drives transmit power through friction forces between its rolling elements.

The Rotrex traction drive uses an elastic annulus with a small pre-span to secure contact between the roller planets and the sun shaft with a reasonable force. The patented "ramp effect" increases efficiency and reliability in the transmission by regulating the torque transfer capability on demand through self-adjusting planet geometry.

To enhance performance, the Rotrex traction drive uses a special traction fluid. These fluids are a new family of synthetic hydrocarbon oils and greases offering a series of unique performance advantages. Developed specially for its use in Rotrex superchargers, the SX100 momentarily increases viscosity under high surface pressure, enhancing the traction drive performance by securing the optimum friction between rolling elements while cooling and protecting the system.

This traction drive combined with the latest technology in centrifugal compression, characterized by high adiabatic efficiency and low noise, gives Rotrex superchargers an exceptional competitive edge over any other forced induction solution.

The GTM Supercharger kit will Have four different Rotrex compressors to chose from: C38-61 Trim,C38-71 trim, C38-81 trim,C38-91. Combined with our custom compressor housing we will offer three different stages .

Stage zero up to 450 HP (carb approval pending)
Stage one up to 500 HP
Stage two up to 525 HP
Stage three up to 550 HP

All of our Supercharger kits are available in two forms. The tuner kit form, so the professional and the end user have the flexibility of choosing what ever fuel and engine management they may desire and feel comfortable using. The second option being a complete kit including fuel and engine management solutions. With that being said, GTM will also offer an extensive range of fuel system and engine management modules to go with our Supercharger kits.

Originally Posted by LateralG'z (Post 664635)

Sam advertise a 550 HP SC set-up, anyone taking a shot at it?

Originally Posted by SAM@GTM (Post 653224)

The rating of the horsepower output of our force induction systems whether a twin turbo or the supercharger set up is in BHP (brake horsepower ) just like how Nissan rates the car on their web site, the 370z VQ3VHR engine is rated @ 333 HP . so i think your are looking at the press release and seeing up to 500 HP and then comparing it to the dyno graph we have posted, the only problem with that is you are comparing WHP ( wheel horse power) to BHP (brake horsepower ) and i think that is what's causing your confusion .

So our stage one kit is rated up to 500 hp which translate to about 415 WHP depending on the car and the dyno and the same goes for a stock 370Z with 333 HP from the factory that will also dyno @ 275 whp

Hope this help .

Sam

Originally Posted by Red370 (Post 664631)

a larger pulley to bump the PSI up to 8-10 and tune? doesnt seem that difficult to me. TT is more headache than its worth. Especially in the long run when you start having boost leaks, fuel supply issues, impeller wear, etc. It will cost far less to maintain a supercharger setup than anything involving a turbo. Less parts means less areas to troubleshoot if a problem occurs.

Originally Posted by LateralG'z (Post 664881)

The GTM Supercharger Will Have three different stages to offer

Stage one will come with C38-61 Trim up to 550 HP
Stage two will come with C38-71 trim up to 590 HP
Sage three will come with C38-81 trim up to 630 HP

so stage two or three should reach 500WHP since that is BHP advertised? Maybe?

Originally Posted by theDreamer (Post 664884)

You keep quoting the wrong information, reread his post. One is from the early development thread and the other is from the actual press release. You keep quoting the development numbers.

Originally Posted by LateralG'z (Post 664923)

Oh, well that clears that up. thanks, should maybe correct the numbers so they don't get confused when reading from thread to thread

Originally Posted by Q8y_drifter (Post 665208)

ok now i'm confused.

When you go to GTM's site there's 2 choices for the SC, stage 1 (500bhp) and stage 2 (550bhp). Are these both the C38-61 compressors with just different pulleys and tune?

So I take it the 71, 81 and 91 compressors are not yet available?