B-303 cam with stock oem h-pipe

[brad65]

Any help guys? Sorry for the stupid question but I'm running a b-303 with Windors jr heads on a 306. My exhaust is FMS shorty headers, Mac off-road h-pipe and flowmaster cat-back. I hate how loud it is and I just got a stock h-pipe with only 45k miles on it. Will the cam be to much pollution/gases for the cats, since it says off-road use only? Will it clog the cats?

 

[90lxfoxbody]

i may be mistaken, but most iemts like that read for off road use only are labeled as such because most people tend to run them on cars without smog control systems. the x pipe on my 90 5.0 was listed as for off road use only, but they only make them for 5.0's. so i imagine you would be safe with that combo. as far as the clogging question, i'm sure any mullfer shop could tell you. and i would get more than one opinion, since they might try to hit you with the ol' sales pitch.

 

[brad65]

Man... all my pollution suff is removed! I have not egr setup or smog pump, But does that mean you can't run a catted pipe because it will have to much crap passing by and clog the pipe.