audtatious wrote:Terry, in your opinion, how much power can a stock 5AT tryanny take (with external cooler)?
I have about 20K boosted miles on my 5AT. In addition to the trans cooler, I had the Transgo shift kit installed. Anyone thinking of boosting an AT really should get the shift kit because more than anything, it reduces fluid temps. The trans will spend less time "in between" gears which is what heats the fluid up.
Next tip, never boost in higher gears because of the strain on the transmission. I usually drop it into 3rd before I get on it, then upshift accordingy.
Finally, the biggest factor on longevity is not to beat the crap out of the car every chance you get. Even the mighty GTR will break down if sufficiently beaten on.
My 1st gear is not holding as well as it used to, but not quite bad enough for me to go the next step which is to add clutch packs.