Hey guys. I know there are several posts about this but I didn?t see anything real recent. I?ve got a 15 hellcat with a 3.8 whipple that goes into limp mode at part throttle boost right around 120-130kpa. I know some of the big name tuners have figured this out but I?m wondering if anyone on here has made any progress on this issue and is willing to share some pointers? Car runs great until it sets that code and it?s very frustrating. TIA
Post the tune and log files up
2023 Dodge Durango R/T (5.7L) with Tow & Go Package (build thread)
Gen 5x Whipple 3.0L Supercharger
Smooth Boost Electronic Boost Controller
SRT 392 Air Intake Conversion
92mm Hellcat Throttle Body
Mighty Mouse Mild SRT Catch Can Setup
I believe this difference between desired and sensed MAP is my issue. What tables need to be altered to adjust ?desired map??
From the info i have read. It is 45556 table on the supercharger page. For me i never got it to help the part throttle limp mode. I raise it a little. leave idle area as is. raise the rest of the table 5 to 7%. That amount does not make it any worse. It seems like over 10% does go in limp mode more often. What changed when it would and sometimes seemed to fix it. Was in the Engine Diag section. Under the general tab. Airflow max rpm table 39020. And under airflow tab. Peak airflow table 14064. Log sonic airflow and see what lbs hr it goes into limp mode. then see if the tables above are at the wrong setting for the rpm when limp mode happens.Originally Posted by PurplePoweredNeon
Thanks a lot for the reply Dave. I have also messed with the 45556 with no better results. I will log sonic airflow and compare to the max airflow table and report back. Did you end up resolving the issue for good?
Logged sonic airflow and bumped those two tables up to compensate and that didn?t seem to help. When it goes into limp mode the desired map is over 3 psi lower then sensed map. I?m assuming that?s the issue?
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