Flowmaster 40, all 4 cats taking off?
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Actually backpressure SHOULD be minimized, but you want to keep the flow fast. Backpressure usually increases flow so it is a double edged sword.
#11
Use a de-fouler. You can buy them at most autoparts store. I think its 18mm. Buy two of them, drill the inside of one out to fit the 02 sensor tip in, and bolt them both together, and then put the entire assembly into the exhaust pipe. Search on google, there are several how-to's.
#12
Use a de-fouler. You can buy them at most autoparts store. I think its 18mm. Buy two of them, drill the inside of one out to fit the 02 sensor tip in, and bolt them both together, and then put the entire assembly into the exhaust pipe. Search on google, there are several how-to's.
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#16
lol and just a few weeks ago i saw a guy with a BRAND new f250 do just this....not gonna lie i laughed. but i was extra careful on the throttle when i was loading up after seeing that :)
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