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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Hunting Idle, Backfire and jerking while driving my Edelbrock Stage 2
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<blockquote data-quote="yeller1" data-source="post: 15625571" data-attributes="member: 45231"><p>Well the title says it. Any ideas what could be the main culprit. I was with my local tuner a few weeks ago and we thought we had it but it actually got worse. We data logged and noticed it was adding fuel when I pushed in the clutch. I replaced both upstream 02's which were black and replaced all 8 coil packs. New plugs were installed with the kit. I will probable get with my tuner this week to do some more logging but I want to see if I could find out something else so I will maybe have some info to share. The idle is mostly good but still dips down a couple hundred rpm and almost stalls. The backfire is really annoying and loud. It happens on decel and just regular driving. The herky jerky during just normal load is also f'd. The tune is from someone else so my tuner is trying to fix what the I got with the kit. They had a dual bore tb in the tune which I dont have. Just 1 of the issues. Any help or ideas would be appreciated.</p></blockquote><p></p>
[QUOTE="yeller1, post: 15625571, member: 45231"] Well the title says it. Any ideas what could be the main culprit. I was with my local tuner a few weeks ago and we thought we had it but it actually got worse. We data logged and noticed it was adding fuel when I pushed in the clutch. I replaced both upstream 02's which were black and replaced all 8 coil packs. New plugs were installed with the kit. I will probable get with my tuner this week to do some more logging but I want to see if I could find out something else so I will maybe have some info to share. The idle is mostly good but still dips down a couple hundred rpm and almost stalls. The backfire is really annoying and loud. It happens on decel and just regular driving. The herky jerky during just normal load is also f'd. The tune is from someone else so my tuner is trying to fix what the I got with the kit. They had a dual bore tb in the tune which I dont have. Just 1 of the issues. Any help or ideas would be appreciated. [/QUOTE]
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2011-2014 Mustangs
Engine/Tuning
Hunting Idle, Backfire and jerking while driving my Edelbrock Stage 2
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