Quote:
Originally Posted by LandonElf
Okay I have a few suggestions to you and any other 5.7 guys out there using the canned tunes.
Use increased shift firmness, but do not use increased shift points!
On a stock to mildy modified 5.7, the extra RPMS take you out of your powerband instead of keeping you in it. Apparently our engines just do not like additional rpm and if you pay close attention, they seem to struggle a little with the raised shift points.
Its a really weird scenario that I don't fully understood, however according to my Gtech, I lost 2/10 of a second off my times when using the raised shift points.
HOWEVER, though my car did not perform as well from a dead stop, my passing power and top end seemed to be better.
Anyone else with similar experiences?
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I noticed this also. I ran 14.4 and 14.5 last week and i had my diablo predator tuned for raised shift points and i felt that when i went over 6,000RPM that my acceleration wasn't was weak. and as i see most 5.7s are getting to 13.9 in 1/4 mile. i am goin out to the track tomarow so i will let you know what my new times are after i lower shift points
