I recently put a 3.91 in my car from a 3.06 now it?s throwing a code and won?t shift. I literally rode home in whatever gear 50 mph at 3.5k rpm. I changed the gear ratio and tire size via scanner and nothing.
I recently put a 3.91 in my car from a 3.06 now it?s throwing a code and won?t shift. I literally rode home in whatever gear 50 mph at 3.5k rpm. I changed the gear ratio and tire size via scanner and nothing.
What year, make and model vehicle? Have you opened a service ticket? I went through something similar that HPT couldn't resolve. I used my Diablosport handheld to set my gear ratio and it worked.
HP tuners changed mine OK, 2.65 to 3.06, just didn't go far enough into the systems for some reason, so I have no ACC/FCW. People say that Diablo is the way to go for gear changes.
2018 Trackhawk PCM/TCM tune by Dusterhoff.
Flex Fuel, MMX faux 95mm TB, GripTec 2.85, 10% ATI lower, FIC1200, ARH 1 7/8 w/cats, 180 T-stat
13 Chrysler 300S, RAM BGE 412 stroker, cam motion 232/246 619/619 118 +4, ATI 18% OD pulley
Whipple Gen5 3.0, 2.50 upper pulley, Smooth Boost controller, FIC 1200 inj. Nick W 108mm TB, FORE dual return fuel system, E85, FTI 2800 stall(SRT83380), SHR WAR Viking trans and valve body, Getrag 3.73, 1 7/8 kooks w/hi-flow cats, 3" Magnaflow Cat-back 943rwhp
Yeah I ended up using my diablo as well. That sucks spend all this money on hp tuners still need diablo . Glad I never sold it.
I may have to buy the Diablo to fix mine.
2018 Trackhawk PCM/TCM tune by Dusterhoff.
Flex Fuel, MMX faux 95mm TB, GripTec 2.85, 10% ATI lower, FIC1200, ARH 1 7/8 w/cats, 180 T-stat
13 Chrysler 300S, RAM BGE 412 stroker, cam motion 232/246 619/619 118 +4, ATI 18% OD pulley
Whipple Gen5 3.0, 2.50 upper pulley, Smooth Boost controller, FIC 1200 inj. Nick W 108mm TB, FORE dual return fuel system, E85, FTI 2800 stall(SRT83380), SHR WAR Viking trans and valve body, Getrag 3.73, 1 7/8 kooks w/hi-flow cats, 3" Magnaflow Cat-back 943rwhp
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