he can know all he wants. but i know my car, and i saw the dyno runs w/ & w/o it. the car is faster in the top end, and the low end hp is higher. i don't care what he thinks he knows about MY car, he's wrong.

now, i must correct myself. the gain in hp simple changed w/ the cat. it hit 129.7 a few hundred rpms quicker than w/o it. i didn't quite word it right. my bad. hope you get what i'm saying now

 

Some situations do give more power, but the engines are designed to run on that backpressure. Taking some of it away (on a stock engine, most of the ones you guys have are not stock) can hurt your engine. And I liked the sound benefit too, but I put mine back in.

 

i think i lucked out. i have enough air coming in, that relieveing a lil backpressure was benificial. basics of a motor are more air in requires more air out. on a straight stocker, yeah, it'd prolyl do more bad than good. but, i'm gonna experiment w/ slightly larger diameter piping for my exhaust. really, i juss wanna eliminate the nasty ass crush bent area from the factory. mandrel bends will hopefully help a lil more.

 

I agree whole heartedly.

 

 

There was a article about Backpressure, and the myth that surrounds it. You can read it here.

https://www.honda-acura.net/forums/s...kpressure+myth

 

lol, well i'll be damned. i guess it isn't that surprising that my motor runs better w/ the test pipe rather than the stock cat. i had considered going w/ a smaller diameter pip as well... maybe i will experiment w/ that.

 

A cat-converter is really there for when the car first starts, when the car gets up to operating tempature it generally does not need the cat to pass emissions, and I doubt not having one would increase your gas mileage at all.

 

nor decrease it much for that matter...