basically ever since i fitted a new exhaust (standard), the engine has became very loud and sounds like its blowing from under the bonnet, its mainly noticeable from inside the car, its sounds like its blowing badly but when i go outside the car and look under to check its all sealed its fine, could the engine be knocking or do you think the exhaust has made the mani/downpipe blow, the system is all new apart from the downpipe and manifold?? it doesnt affect the power but it just sounds like a shit diesel all the time?
engine knocking, i think
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