08 turbo 5.7 hemi surging and timing getting low, no knock

[colin7761]

hello guys, ive ran into an issue. the first significant pull in the log shows the rpm surging and the timing being retarded. the second pull doesnt surge but after it shifts the timing retards and it goes slow,, after i let off the pedal it continues to speed up for a sec. third pull, the surging and retarded timing is back. any ideas what could be causing this?
CURRENT.hptnewest.hpl

[DB5249]

so you made a new post. i legit told you you have knock and showed you were lean in pictures and sent you an updated ve table and trans tune to help with some of your issues https://forum.hptuners.com/attachmen...5&d=1747517001

[DB5249]

change you mpvi input to lambda settings, right click on channel and click on transform

[DB5249]

2008 turbo mopar.Graphs.xml here are some updated graphs you can add to your vcm scanner to help you out. i made them based off your tune file, you need to also log more channels, such as knock, not knock retard short/ long term, an you need to log total knock retard, and change your AEM-4110 from afr to Lambda in order to get the EQ error table i built you up and running. Screenshot 2025-05-17 213319.pngScreenshot 2025-05-17 213343.png

[DB5249]

you need to force it to open loop in tune, and use the EQ error graph i set up and adjust fueling in open loop. when you get close then you can turn closed loop back on

[DB5249]

Screenshot 2025-05-17 214452.png turn the boost down before you blow it up alright. you went 18.1 at wide open on your log

[colin7761]

appreciate your help. do you think i could be running out of fueling at the top end? here is an updated log.
today.hpl

[colin7761]

why would it command a 1.00 ER while im still wide open?

[colin7761]

figured id post a new log. this is with shift points below 6000 rpm.
is there something that would prevent it from running over 6k? i believe i had all the settings set. either way here it is, seems to not have the issue with these lower rpm settings. its fine like this. i would just like to know why it didnt like being up there. thanks!
new.hpl

[DB5249]

you will need one of these https://www.fueltech.net/products/ma...6e3d8d28&_ss=r

[DB5249]

one problem you are having is you keep trying to tune in closed loop with wideband, closed loop is making fueling changes and messing up your tune