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test pipe diameter
I have a greddy 80mm power extreme II exhaust, and i am going to buy a downpipe and a test pipe. The downpipes come in 80mm tubing for name brands, but there arent any 80mm test pipes, which are 3.15", they only come in 3". is there any way to get around having a bottleneck in the exhaust? also i was searching for 80mm test pipes, and the megan one came up as 80mm in one place and 3" in another, does anyone have info on this?
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