majek5
Mon, June 7th, 2010, 09:30 PM
What is the difference between these tunes, besides the obvious 15hp? Is the trans shifting the same? Would the egt's be lower?
cleatus12r
Tue, June 8th, 2010, 11:25 AM
Actually, there are a few substantial differences between those two calibrations.
Most notably, the 1-2 shift speed, 2nd gear TCC apply, and fuel rate/ICP.
The 25T will run similar to a stock truck with a slight increase in power and efficiency and will be slightly quieter than the 40T.
majek5
Tue, June 8th, 2010, 11:40 AM
So will that effect egts, or just the trans?
cleatus12r
Tue, June 8th, 2010, 12:13 PM
Well, since there is less fuel, the EGT will be lower.
I can't see how you are actually having an EGT problem with stock injectors though.
I personally have two customers that have nothing more than an aftermarket exhaust on their trucks and tow insane amounts of weight in 60+ HP tunes with their 97's.
I know you have an EGT thread.....but I think you have something going on. 10-12 PSI on a stock OBS turbo is about maximum regardless of tuning so I wouldn't call that a problem.