stock exhaust cat converters

[satyr36]

Is it a good / bad idea to take the mid section off and knock the internals out of the cats to allow better airflow? hehe

[protegerider]

I am running an open midpipe, and I lag a little bit more out of boost, but when I am in boost, I spool at 2000 rpms (thumb). I am thinking about running an open downpipe too.

[satyr36]

you mean you cut the 2nd cat out? and running just 1 cat?

[protegerider]

No, I mean the stock exhaust ends at the midpipe. The cats are still there but there is no muffler or test ppipe.

[satyr36]

Well, i did it. I dropped my pipe out, punched all of the material out of both cats. bolted it back on. Sounds a lot deeper - not too bad at all for a free mod... Performance is slightly better - not a whole lot more. Seems to run a lot smoother (not as laggy) and spool is quicker.

[protegerider]

good stuff. how did you do the cats?

[satyr36]

2 pound hammer + big steel bar.. hehe. pretty easy really. best thing is, is ill take the insides to the local scrap yard and get some cash for it