Hi,
I'm sorry for the long message but I was wondering if you guys could help me with a question
I'm trying to tune a 6.1 hemi with a magnuson on 14 psi and hellcat throttle body. I've tried everything I can't think of with the pedal power tables, desired throttle along with throttle body airflow and I can't seem to keep the tps percent from jumping up from 22% to 35% rapidly. The throttle ramps in smoothly up till 22% but after that it opens quickly. It also causes map to jump from 60 kpa to low boost without moving the pedal much at all, like fractions of a volt. It seems even if i slowly press on the pedal it hits a point where it just wants to open the throttle. I've asked others tuners about this issue and they have said they have experience the same issue with no solutions.
I reviewed the last 6.1 I did but with stock throttle body and it had a similar issue but that car was procharged and on lower boost so it wasn't as noticeable. It also waited till 90kpa and 29% throttle before it happened.
I'm wondering if this is just inherent to these cars or if I'm missing something. I was hoping for some advice or just wondering if anyone has experienced this issue before and if they were able to solve it.
Please help