Do many of you guys(girls) have testpipes instead of high flow cats? Anyone know the hp gains between a testpipe and a high flow?

 

testpipe = midpipe. Run a few searches - you'll find the midpipe and high flow cat both see hp gains, the midpipe a little more so. IIRC the midpipe performs better at the higher end, if you haven't died from the noxious fumes.

A search yielded this recent thread, and many more I didn't read. https://www.rx7club.com/showthread.p...pipe+high+flow

Dave

 

haha i think the question you should be asking is who still does have a stock cat

 

I do. Just checked it this fall.

 

haha i know that testpipes will add hp i was asking because it seems like most people with fd's run high flow cats. And i was just trying to figure out why that was.

 

Actually, I'd say it's the opposite - high flow cats are more in the minority. Most people either run a midpipe or a resonated midpipe, or the stock cat.

Dale