GT Motorsports: 370Z Supercharger system development

DuNw/4BanGerZ

subscribed...keepin my options open

john370z

Sam
Thanks for clear updates. I appreciate the HP range you are shooting for and pics of development. I have been trying to get this from Stillen. Do you have a time frame questimate? Will your supercharger system have problems with the 7sp AT? Will any mods need to be done to the 7AT? Is an oil cooler included? I am not familiar with the blower you are using. I have used vortec and with this motor I am concerned that the boost is not very "streetable" little low rpm torque gains. Will your blower be similar? or more like a roots style? Thanks again for the information. IT looks like you are going to take my business from Stillen...
John

__________________
2009 370Z, Had Berk HFC and un-installed them cuz too noisy!, Stillen CBE, 10mm rear wheel spacer, K&N drop in filters. Blower to come...

KingDavid

The HP numbers that GTM is shooting for...Is that to the ground or at the flywheel?

SAM@GTM

The 2.5 " will be good, In a SC system a little back press is needed.

So i would not upgrade to 3" exhaust if you are considering the SC System

Sam

Snakes709

reading the OP, got a little confused about the noise part. Does this mean this supercharger does not make a whine? lol. Also how much psi of boost does this make on stage 1. I know ill probably have to wait until further tests

G37Sam

If we're seeing around 500whp then I'm guessing somewhere in the 10psi range? And yeah Rotrex wouldn't whine like this comptech setup there



You exhaust note would get much louder though!!

__________________

Togo

^ I can't say i'll miss that whine, actually it was something I didn't want to hear. Maybe I'm weird but I don't want to hear the whine really. I love the sound of spooled turbos though, that just gives me a flat out erection! I'll have to say that the rotrex until being quiet is a HUGE plus for me.

SAM@GTM

Thank you John

As for time frame We are committed and planing on displaying both of our force induction system Solution for the 370Z @ sema 2009. (Sema 2009 is in nov) .

Now for the 7AT, It is always recommended when installing any force induction system to install a valve body upgrade and a transmission cooler .

The new 7AT from Nissan is a new animal and we do have in our facility right now a vehicle with the 7At that we are doing our research and development so offer our typical transmission upgraded, here is a link to what we offerd for the (RE5 five speed unit )

GTM Motorsports*::*Search results

We have installed and tuned every SC system you can think of ... vorteck, stillen ,hks ,procharger, We chose the Rotrex system because even it is centrifugal blower it uses a traction drive system which makes the blower very responsive and offer a good low end torque so we are getting the best of both worlds, Below is a dyno graph for a GTM HKS stg 5 supercharger system, the HKS unit also utilizes a traction drive system as you can see this car retained it is low end torque even with the centrifugal style blower, this car felt like a v8 it was a lot of fun .

This car is 2005 350z vq35de Automatic (stock engine GTM stg 2 transmission)

Sam

Snakes709

that whine is so sexy though...i never had a turbo set up so i cant say anything about the BOV or spooling, even though it is nice. However that seems to be all you hear on cars these days. Very often do u hear a high pitched whine..lol

ZforMe

I'm guessing this isn't something that can be installed in my own garage. Looks like it could be a great alternative for those of us interested in Stillen's Supercharger kit.

__________________
13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

john370z

+1 Have I already said I am VERY interested in the performance and reliability of your product?

+1
+1

__________________
2009 370Z, Had Berk HFC and un-installed them cuz too noisy!, Stillen CBE, 10mm rear wheel spacer, K&N drop in filters. Blower to come...

john370z

Sam,

Do you think the 7AT will need to be modified if I am at 5500 ft altitude looking for about 400-425 whp? Not a track driver, but a spirited driver.
Thanks,
john

__________________
2009 370Z, Had Berk HFC and un-installed them cuz too noisy!, Stillen CBE, 10mm rear wheel spacer, K&N drop in filters. Blower to come...

SAM@GTM

Oh yes absolutely, We have sold a lot of systems to DIY Guys that just love to tackle such job and we do provide a very good comprehensive installation manuals to make this happen

Here is some samples of Installation manuals for our GTM twin turbo kit for the 07-08 350Z HR

http://www.gtmotorsports.com/Manuals...ual_350ZHR.pdf

http://www.gtmotorsports.com/Manuals...ist_350ZHR.pdf

http://www.gtmotorsports.com/Manuals...own_350ZHR.pdf

Sam

SAM@GTM

(If I'm understanding your question correctly )

Since We are using maf base tuning, altitude does not really make one bit of difference the ecu will be able to compensate for the changes in altitude wither you are at see level or at 10000 . so the car will still have the same factory driveability at all the time .

So far I'm impressed with the 7AT, Nissan has done a good job in programing the TCM .

As for not doing any supporting mod to the transmission after going force induction,it is not recommended.. at least you need to install a trans cooler, as we are producing more power the transmission is working harder and it directly effects the fluid temperature

Sam

Snakes709

Is that just for the 7AT or both the 7AT and 6MT? I know it would be a good thing to upgrade the transmission but is it highly recommended