Hi Doug and all,
Forgive my ignorance here...You got the Mac O/R H pipe...Does that replace the stock H pipe with its two catalytic converters? I suppose that's my you needed MILS (don't know what they are or what they look like but I think I understand that they "trick" the computer into thinking the cats are still there)? Would this be a problem at smog check time since the cats are now gone?
Does Mac sell an O/R H with the cats installed in it like stock? Wouldn't this be easier to install...and less of a headache at smog inspection time?
Finally, what are the diameters of the pipes you used (I'm not sure what the stock diameter is...2.25 inch)?
yes it replaces the stock h pipe and the 2 cats on it. I have smg check every 5 years on new car, so I just saved my stock H pipe and will put it back on when the time comes. After you do this install once, it is a real no brainer.. I can do it in 30 minutes now. I believe it is 2.25.
I do not think Mac makes one with cats, and if they did install would be no different. My experance has been cated H or X pipes usually go **** up real soon, plus you dont get the extra flow. ON a side note we put my car in a smog checker at a friends station and it passed. Key is to get it hot before emmisons testing.....
Doug