trdracer

I just don't understand how this mod helps with a supercharged truck. People say you get better performance, but I thought this just makes those with auto trannys shift sooner. Why would upshifting sooner make the truck faster? I'm supercharged, but I drive with the ECT on all the time because I DON'T want to up shift

PhxTRDRunner

I believe it allows more fluid to travel through the transmission thus reducing the heat buildup...which blows trans's.

kaneman23

What PHXTRDRunner said. The VB upgrade improves the fluid paths through the VB and trans allowing it to shift harder and quicker. Ever noticed how the auto takes a while to shift between gears, as if it's slipping? The delay and slip is what builds heat in the trans and destroys the clutch packs.

The VB upgrade is more for longevity but the peformance is also nice.

MTL_4runner

My understanding is that it changes the band lockup points (done by changing the fluid flow)......on a stock tranny they wanted to allow the bands to slip more and give you smoother shifts.....not a problem for heat buildup on a normally aspirated motor. On a supercharged motor you are able to make the bands slip much more because of the huge increase in torque and HP and this slippage creates a massive amount of heat which must be dispersed (and it has no where to go). If you are not a jackrabbit off the line with the new S/C you might be ok, but most have the S/C for just that .......acceleration!!!......so if your going to try to test your 0-60 times.....do yourself a favor and save the tranny from an iminent rebuild and do the mod.

j-dub

Could somebody post the VB upgrade info or a link?

rimpainter.com

www.gadgetonline.com

Poke around his site, you wont be disappointed.

j-dub

Thanks