Fuel cut at 5400rpm's

[lethaltx]

Boosted 2010 Challenger, Auto, Novi 2000 feels like it's hitting fuel cut at roughly 5400rpm's. Making 725 at 200kpa then sounds like a rev limiter is activating. Changed plugs, has tight gap made no difference, running out of ideas. I don't tune a lot of Dodge's and I have never run into this issue before. Thanks. 2010_Challenger_Higgs_New_5.hpt

[blacksaleen9]

Got a log?

make sure you're logging trans engine tq and FA desired 1.... Easy to confirm it's a cut when monitoring the FA desired.

[lethaltx]

Will try that and save a log to post

[lethaltx]

Higgs_5.hpl Acts like it's trying to shift, will log some more trans stuff. Here is a current log ( don't hate just updated HPT and have not set up my scanner yet ).

[lethaltx]

UPDATE, trans is trying to shift causing all my problems, was fine before increasing boost with pulley change, any Mopar trans gurus want to chime in?

[blacksaleen9]

I'm pretty sure I've seen someone else have a similar problem and it was because they disabled the tqmgmt on the trans side... try re-enabling the tqmgmt and reducing the upshift tq reduction. Also you may want to bump your ramp tq ~10% for each

I've attached a recent cal from a car I'm tuning, 09 SRT8 cam car. Shifts quick and firm, might be able to compare settings to get an idea.

09 SRT8 Challenger SRTmax Cam Auto.hpt

[lethaltx]

Thanks for the help, I will try that. Car was fine with 4psi less boost.

[Jay@HAP]

you need to log "Throttle Torque Source" that will probably tell you what limiter you are hitting.

[lethaltx]

Will do that Jay, thank you. A lot to learn on these Dodge's. Will update when I get it back on the dyno.

[lethaltx]

Does not matter what I do car shifts at 5400rpm's, I have tried everything it's almost as if the TCM is not responding to changes, any ideas???