2004 Jeep Grand Cherokee 4.0L

I?ve got an HPTuners MPVI 2+ and I?m having trouble reading my JTEC ECU. Is there no support for the JTEC 4.0?

Never mind, I’m an idiot. I got it.

For anyone that may stumble upon this post wondering if they can tune their 4.0L JTEC/JTEC+ WJ. You can. I successfully read my ECU on my 2004 Jeep Grand Cherokee 4.0L. It doesn’t explicitly state that you can, but I was able to. I hope this helps whoever it may.

Quote:

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Originally Posted by The_Magic_SpoolBus

Never mind, I?m an idiot. I got it.

For anyone that may stumble upon this post wondering if they can tune their 4.0L JTEC/JTEC+ WJ. You can. I successfully read my ECU on my 2004 Jeep Grand Cherokee 4.0L. It doesn?t explicitly state that you can, but I was able to. I hope this helps whoever it may.

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Thank you for confirming, because Supported Vehicle list only shows 4.0L Grand Cherokees supported up to 2001. But Often times there are a lot more controllers supported than what are shown on the list. On my way tonight to purchase a 2004 WJ with the 4.0L!