Originally Posted by atreyu06
well as you can tell i was told over and over you need some kind of back pressure, but thanks for the info, and actually yeah not alot but a little bit, i think he's aiming for the fuel pump next...
Assuming it is not a 2stroke/2cycle engine no. I ran my SR20DET opendownpipe for a long time, it was loud as hell, but it didn't complain (as long as you can deal with backfiring/flames

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