Transgo Kit is not for 7AT it's for 5AT (NA) and not for Forced Inducted vehicles. I used to have that crap it didn't help at all on my F.I. G35X and I had the Transmission rebuilt at Level Ten also and that didn't help also.

 

Are you allowing the car to downshift automatically OR do you manually downshift into 2nd or 3rd gear before you start to accelerate into the higher gears and do you still experience slippage?

Or are you accelerating in those higher gears (4,5,6) when you're experiencing slippage?

 

The gtm valve body upgrade helps this for the 7at

 

It helped on my car. The shifting is shorter and it feels great to see the gears catch like that

 

@SPDCRZ; It helps a bit but Wattles is still experiencing slippage, hence is why I asked him those questions.

 

Check this post out: The member name is WILLDOGS and he owns a Twin Turbo G37x Sedan that is putting down 451 WHP with no modifications to the stock transmission and isn't experiencing any slippage and has over 15K on the transmission.

Link:https://www.myg37.com/forums/g37-sed...x-sedan-2.html

 

Sam didn't tell me if he adjusted the line pressurevua Uprev. I know here was a ton of tuning going on in the 7AT. It took quite a lot of adjusting.

 

The slippage occurs when the tranny is already in the gear and hits the high RPM, so it truly cannot handle the torque.

 

@Wattles. Check this post out: The member name is WILLDOGS and he owns a Twin Turbo G37x Sedan that is putting down 451 WHP and 400+ TQ with no modifications to the stock transmission and isn't experiencing any slippage and has over 15K on the transmission.

Link:https://www.myg37.com/forums/g37-seda...x-sedan-2.htm


By the way I also received the GTM VB upgrade as a precautionary measure to protect the Transmission for my GTM Twin SC Project.

 

i know someone who have a 2012 g37 fully loaded he broke the torqe conveter after 20k

i think the best thing to do is valv body + higher stall + good quality cooler

 

If you do the uprev for higher line pressure with the gtm valvebody it works well. I have done the valvebody and noticed the difference. I am getting the uprev protune done soon where I will up the line pressure. So we will find out.

 

i say screw it go for broke i ride with a buddy to cars and coffee and he has a stage 2 supercharger and he makes around 515 to the wheels no slippage just straight power...but then again i have heard some bad things and the GTM fitment on their super charger systems... if your car is brand new go with the stillen since you dont need to worry about warranty issues

 

Wait for it....

 

Stillen is junk!!!!! Check for the many many many threads about people having issues an to getting good power with the Stillen!

 

Plus +1^^^^^^