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So i recently purchased cold air intake and i have problems now

1504 Views 40 Replies 13 Participants Last post by  oldernewbie
I bought a universal tube with a K&N filter and another smaller filter i forgot what it is called , Anyways i have a 2003 3.8 6cly mustang, the problem i noticed is when i driving and i rev my engine then release the car will rock foward and back real fast it seems more towards the back it rocks, it is a kind of violent rock i dont think its a normal rocking motion because friends have them and they dont have this problem, If u know nething about this please leave some information so i can figure out what the problem is.Also i have the Service engine sign on my dashboard lit up to.
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this doesnt sound CAI related at all. can you describe the rock a little more?
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