Exhaust diameter question.
#1
Exhaust diameter question.
I currently have a full 3" mandrel bent ATS exhaust on my IDI. I am getting my 5" stacks installed on the 16th. I was just gonna have an elbow with a 3" to 4" adapter and then a 4" to 5" in the bed. Would it be beneficial to have the rest of the undercab pipe replaced with 4" tubing? I imagine I would have to retain the 3" down pipe though.
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