Surge at low speeds

03SonicStang

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Nov 13, 2002
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Michigan - Motor City!
After my recent dyno session I’ve noticed a surge when accelerating at low speed up to 2500 RPM. Happens in first and second. Also, at idle, the AF moves between 13.7 and 14.4. I’ve tried moving the Inlet Filter out about ½” and even stuffed a towel at the fresh air intake (where the foam piece JLT provides. ). Checked for vacuum leaks, and pulled to MAF sensor to check the gasket and if it was clean. All looks good.


Car has a 123 JLT Intake, CJ twin TB and MRT off road exhaust. Read a couple threads that the Intake could be the culprit. Also Spoke with my tuner and he wants to check out the car. Just wondering if there’s anything additional I should try. It’s driving me nuts.


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