Rough Idle
Hello everyone, I am new to this board, and I was wondering if someone could help me with my problem. My mustang seems to have a rough idle after I had equal length headers, offroad H pipe, flowmasters and dumps added. When the work was being done, they also removed the air pump. The thing is that I think they didn't remove it properly. They didn't cap the heads first of all(I did it myself).
Does anyone know what mightr be wrong?
Any help would be greatly appreciated. Thanks
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