Car is a very heavily modified 6 speed Challenger. Issue is P0108 code and throttle light pops up randomly, but much more often at dragstrip in 4th gear. When it throws the code it kills the throttle. The car never gave this issue until the boost was pushed up to about 16-17 psi. It acts like it is hitting the voltage limits for the MAP sensor. Based on what information I found about how when that code is thrown it makes sense as to why it does it at the dragstrip (has to do with the amount of time and consecutive times the ECU sees high voltage signal). The car does have the 2.5 bar sensor and it has been replaced.
Two tunes attached below, both are basically the same, just some adjustments made to test some things. Unfortuneatly this is a friend's car and for some stupid reason I can't seem to get lucky enough to get a log of this when it actually happens. Last night we were at the drag strip and it seemed to be doing it on every run so I hooked up the laptop, but then it rained. So frustrating.
Any thoughts? I did consider putting a voltage clamp on the MAP sensor output so the computer doesn't ever see the full boost signal, but trying to avoid that if possible.
Thank you!
mXa_final_max_map_volts_increase.hpt
mXa_final.hpt