5AT GTM VB Upgrade
5AT GTM VB Upgrade
just did my vb upgrade ,, great modification and really love the car 
,,
we 5at guys sometimes wish it was a 6MT ,, well after my vb upgrade shifting is more fun and it gives u a small kinda jump from 1-2 ,2-3 , 3-4 ,, and mostly 2-3 ,,
daily use is excelent and didnt change anything ,, u only feel the diffrence in manual mode ,,
if going F/I u need the vb upgrade and ur tranny will hold till 400-450whp
its a MUST for all 5at guys feel free to ask any questions
,,we 5at guys sometimes wish it was a 6MT ,, well after my vb upgrade shifting is more fun and it gives u a small kinda jump from 1-2 ,2-3 , 3-4 ,, and mostly 2-3 ,,
daily use is excelent and didnt change anything ,, u only feel the diffrence in manual mode ,,
if going F/I u need the vb upgrade and ur tranny will hold till 400-450whp
its a MUST for all 5at guys
feel free to ask any questions
Last edited by BaZooKa; Apr 16, 2009 at 04:38 PM.
http://www.gtmotorsports.com/product...cat=262&page=1
i think return time is 5-10 days ,, it took for me 3 weeks cuz i live in kuwait ,, and shipping will take a long time
i think return time is 5-10 days ,, it took for me 3 weeks cuz i live in kuwait ,, and shipping will take a long time
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I don't personally know but a good guess woudl be that the stillen is much less aggressive as stillen is more "conservative" with all the parts they sell in exchange for the piece of mind that things won't break. Example is their supercharger kits putting out no power at all but they offer a warranty. Also I know the GTM kit using the Transgo shift kit that you can pick up for 250 bucks i think and I don't know what stillen uses(it might be in house).
GTM 5AT rocks. 
No VB is going to be able to handle the 1-2 shift with 400+ wtq though. The gearing is just too steep. If you consider 1st gear is 3.7+ and final drive is 3.3, your talking about an order of magnitude torque multiplication. With even a stock TC, you get 2x torque multiplication from a stop. That's nearly 24 x peak torque. 9600 ft-lbs wtq on launch! Tires will slip and the tach will be at redline very quickly. Very difficult to modulate the launch and 1-2 shift.
If the car came from the factory with 400 wtq, I doubt 1st gear would have a 3.7 ratio. Too bad we cannot launch from 2nd gear. It would help a lot.
No VB is going to be able to handle the 1-2 shift with 400+ wtq though. The gearing is just too steep. If you consider 1st gear is 3.7+ and final drive is 3.3, your talking about an order of magnitude torque multiplication. With even a stock TC, you get 2x torque multiplication from a stop. That's nearly 24 x peak torque. 9600 ft-lbs wtq on launch! Tires will slip and the tach will be at redline very quickly. Very difficult to modulate the launch and 1-2 shift.If the car came from the factory with 400 wtq, I doubt 1st gear would have a 3.7 ratio. Too bad we cannot launch from 2nd gear. It would help a lot.
Last edited by rcdash; Jan 23, 2009 at 07:54 PM.
GTM 5AT rocks. No VB is going to be able to handle the 1-2 shift with 400+ wtq though. The gearing is just too steep. If you consider 1st gear is 3.7+ and final drive is 3.3, your talking about an order of magnitude torque multiplication. With even a stock TC, you get 2x torque multiplication from a stop. That's nearly 24 x peak torque. 9600 ft-lbs wtq on launch! Tires will slip and the tach will be at redline very quickly. Very difficult to modulate the launch and 1-2 shift.
If the car came from the factory with 400 wtq, I doubt 1st gear would have a 3.7 ratio. Too bad we cannot launch from 2nd gear. It would help a lot.
No VB is going to be able to handle the 1-2 shift with 400+ wtq though. The gearing is just too steep. If you consider 1st gear is 3.7+ and final drive is 3.3, your talking about an order of magnitude torque multiplication. With even a stock TC, you get 2x torque multiplication from a stop. That's nearly 24 x peak torque. 9600 ft-lbs wtq on launch! Tires will slip and the tach will be at redline very quickly. Very difficult to modulate the launch and 1-2 shift.If the car came from the factory with 400 wtq, I doubt 1st gear would have a 3.7 ratio. Too bad we cannot launch from 2nd gear. It would help a lot.
Important and good info ..
the stillen uses there own kit ,, GTM and Forged Preformance use the TransGo kit ..
Yeah. I personally use the transgo kit as well. I drove with a guy with greddy twins and he has a stillen kit and it shifted just as hard as my transgo. So I wouldn't say there's is conservative by and means.
is there anyupgrade for the tranny ,, besides the VB and the Tourque converter ?? and i dont think i would like to spend alot of money for a fully built transmission ..