ECU update = much more responsive throttle and MT fixes

[redracer]

Hey all, Today I brought my 2018 JLUR 3.6L 6speed in for the recalls to be addressed. I also asked (and paid) for them to update all of the software in the jeep.

I picked it up later on and Wow! I had to relearn how to drive it. The throttle is now very sensitive. Off idle it now revs quickly at the slightest touch, so much that I slipped my clutch the first time from a stoplight. Also, when releasing the throttle, the rev hang is gone and the engine decelerates instantly, so much that I lurched forward the first couple of times.

It also looks like they fixed the below idle rpm drop that happens when clutching or shifting into neutral. This I am super happy about because it's been the cause of constant light knock every time that the rpm would drop below idle when coasting to a stop light.

In any case, I wish that my dealer didn't demand $100 to perform simple firmware updates... but I do believe that it was worth it. If anything, it will save me the cost of buying a throttle commander.

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[double0762]

I also get the slight knock from second to third. Has been bugging the crap out of me. Is there a specific software update for that

 

[redracer]

the only reference to it on the invoice is "Customer requests to have all modules updated to latest software" and "Completed, Updated PCM, ABS, and ESP".

Tho, now that I think about it, I did ask them to also update the radio for random issues and HVAC module to address the TSB about hot air blowing. I will have to call them again...

 

[multicam]

Is your jeep no longer under warranty? These sound like updates that should happen free of charge.

 

[redracer]

Is your jeep no longer under warranty? These sound like updates that should happen free of charge.

No, I'm a little over 38,000 miles. I do have the lifetime Mopar warranty, but their computer said that the tsb updates are not covered.

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