Originally Posted by
metroplex
It looks like the pedal ratio tweaks for low OSS's at 79%+ throttle didn't seem to resolve the mysterious boost/power limiter for launching in 1st gear on a 2.7 EcoBoost F-150. Someone pointed out that there's a parameter missing in HPTuners that is found in SCT (see attached) that I suspect might be the reason for the limit on boost while launching on a 15-up EcoBoost. The pre-15 EcoBoost and transverse EcoBoost ECUs don't seem to have any issues with launching, other than the error message I saw when launching too hard at the dragstrip with my SHO causing it to go into limp home mode.
Any ideas on what the Launch Exist Speed parameter does?