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I’m just about done with the VR swap and I need to take my car to the muffler shop witch is about 3-4 miles away, but my exhaust only consist of the downpipe, will this cause any problems if I drive it that far with no back pressure?
 

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Re: Backpressure question. (merlin)

People in my father's generation would run cars at the dragstrip like this, but when they got done running they would plug the pipes with rags to keep the cold air from running back up and warping the hot exhaust valves. Not sure if this is applicable to your case....
 
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