Do I Need a Tune?

[Warrantw5]

I usually post in the Gladiator section and this is my first post in the wrangler forum. Thanks in advance for any advice.
I installed a CAI and muffler delete on my wife’s 2024 Rubicon. It’s a 3.6 L. Everything sounds great and seems to be a little more responsive. I noticed it seems to “skip” once in a while. Even has a small pop, like a muffled backfire. No codes are present. Do I need a tune or will the computer learn to compensate for the new additions? It has about 100 miles since install.
Separate topic. I assume the delete and CAI will not void my warranty since MOPAR sells similar items for Jeeps. Any input appreciated.

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[Skltr]

I usually post in the Gladiator section and this is my first post in the wrangler forum. Thanks in advance for any advice.
I installed a CAI and muffler delete on my wife’s 2024 Rubicon. It’s a 3.6 L. Everything sounds great and seems to be a little more responsive. I noticed it seems to “skip” once in a while. Even has a small pop, like a muffled backfire. No codes are present. Do I need a tune or will the computer learn to compensate for the new additions? It has about 100 miles since install.
Separate topic. I assume the delete and CAI will not void my warranty since MOPAR sells similar items for Jeeps. Any input appreciated.

Believe there is a known VVT issue that could be causing the problem. PCM needs an update but to my knowledge MOPAR has not issued it yet.

 

[Captain Morgan]

I get this too. Has anyone tried a retune, such as Livernois? If so, has it corrected the problem?

 

[Skltr]

I get this too. Has anyone tried a retune, such as Livernois? If so, has it corrected the problem?

This topic should probably be a thread on its own

 

[alphawolff]

This is the same 3.6L hesitation issue we covered in the other thread. It's a defective factory tune revolving around VVT/Knock sensor performance causing the hiccup you're experiencing.

As of this moment mopar has not officialy acknowledged the issue or released a fix for it. An aftermarket tune would be the easiest fix, however none seem to be available for gpec5 PCM owners.

 

[Skltr]

This is the same 3.6L hesitation issue we covered in the other thread. It's a defective factory tune revolving around VVT/Knock sensor performance causing the hiccup you're experiencing.

As of this moment mopar has not officialy acknowledged the issue or released a fix for it. An aftermarket tune would be the easiest fix, however none seem to be available for gpec5 PCM owners.

Ran 93 octane since new, hesitation getting more evident lately, switched to 87 octane to se if it reduces the effect

 

[alphawolff]

Ran 93 octane since new, hesitation getting more evident lately, switched to 87 octane to se if it reduces the effect

93 = Happens less but when it does happen it's much more severe
87 = happens all the damn time but most are minor enough to not notice.

The issue is caused by the PCM randomly retarding timing. The higher the octane, the higher the advancement. The further advanced the larger the retard when it happens, thus a stronger jerk.

 

[Skltr]

93 = Happens less but when it does happen it's much more severe
87 = happens all the damn time but most are minor enough to not notice.

The issue is caused by the PCM randomly retarding timing. The higher the octane, the higher the advancement. The further advanced the larger the retard when it happens, thus a stronger jerk.

Long term affect on the valve train, if constant, could be premature wear suspect

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