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Message: <blockquote data-quote="RatFink" data-source="post: 1566410" data-attributes="member: 32567"><p>I know this post has sat idle for some time, but I thought I'd post an update.  I got the new PCM/ECU installed. Tried running it without the piggyback tuner and was having some very odd idle issues like being stuck around 700 rpm's and sounding like an old carberauted truck to jumping to 1500 and holding there. Another issue was driveability stuff like the transmission shifting funky. Finally, I pulled the ECU and put the piggyback back on. Idle is strong, and holds steady around 1k. It's funny that with the tuner the cam sounds much bigger (very choppy) than without. Only issue now is it will occasionally stutter, jump rpms for a second, and then go back to a steady idle. Overall it's nearly back to normal, I just have trust issues with it at the moment.</p></blockquote><p></p>