Your 6ports will open very easily. You can rev the engine and see them open at only 2000rpms . That's how bad my na engine got to be.

For a clogged cats. If I can uninstalled it and check thru it with a lamp in the back. Sould I see the light ?



I don't know if cat were clogged because I don't know if car car have power or not ! I didn't try another rx-7 that mine..



thanx

hey dumarjo, we need to setup a meet when all the snow melts down.....i`ll give you some tips and we can check out your cats....your best bet is to get a bonez race pipe and replace all your cats, clogged or not. its not that loud with stock mufflers and the power gain is just great.



are you driving it during the winter?