I have a 97 se auto accord. I have a f22b2 engine and will be swaping for an h22 and then get turbo. I have seen that u have to have a certain size exhaust for turbo, so i was wondering what size exhaust should i be getting? before i go get something. I also heard something about the 96 and up accords have o2 sensors or something liek taht in the exhaust so its hard to redue the whole exahust system if u want to pass emissions or something like that.. anyways please shed light on some of these things!

 

If you're really getting an H22 and a turbo, get a 2.5-3" exhaust, preferably 3" with the turbo. If not, stay 2.25-2.5" if you stick with the H only.

You can redo as much of hte exhaust system from the cat convertor back as you want...the O2 sensors aren't a problem.

 

3" is obivsly the best... but i have an h22 in my 92 accord and trying to run a 3" Down pipe is crazy.. it took me forever.. in order to do it i had to notch and re-patch the crossmember... lots of work but worth it i guess... im pritty sure a 2.5" DP would fit much easyer....

 

go with a 2.5"...NA the H will breathe very well with that, and unless your building the H as well, your not gonna be boosting at such high PSI that 3" is needed...