4-speed

Do you happen to know the factory upshift / downshift MPH and the MPH vs TP parameters for a C5 with the 3.15:1 differential? Thanks for any help. I have a predator programmer to make the changes.

enoniam

I was under the impression that you could only do WOT changes to tranny shift points with the predator.

tblu92

You can get all the LS tune files in EFILIVE format from this website-----If you don't have EFILIVE you can download their free demo program off their website to open the files
On a C5 the engine and trans tuning is all on one computer--So just find the year of your car and whether it's a manual or auto trans and you'll be able to see ALL the upshift / downshift points both at WOT and P/T
http://tunefiledepot.com

06MonteSS

you can't adjust downshift settings with it..

tblu92

Didn't say you could make adjustments to shift points with the EFILIVE tune files-- The poster said all he wanted to see were the STOCK shift points so he can use that info to see what it's programmed as STOCK