cat converters

[Sonny7730]

I'm just wondering what you guys are running for your cat. are you running high-flow, regular cat, straight pipe, etc? I've been told that running a regular cat will not restrict enough power to make it worth buying a high flow, and that the high flowing ones blow out in 3-5 thousand miles anyways. also, with a straight pipe or test pipe it gives a bad sound and will make some bad colors on your rear bumper. I"m just wondering what you all are running.

[f00ker]

stock

[kommon_sense]

EPA requires that the catalyst in a cat lasts at least 15k miles and that the casing lasts at least 25k. I'm looking at going with a random technologies cat.

[S Q A D]

i'll be upgrading to hi flow with 2.25 piping very soon .. fuck stock cats ;)

[kommon_sense]

in a recent issue of tpr mag, they tested the following on a 99SI.

stock cat (no exhaust) - 150whp
random cat (no exhaust) - 156whp
no cat or exhaust (open header) - 157whp

[quetzolcotl]

i have a generic OBX hiflow cat and can tell no difference from the stock one. it was only $50 though. carsound is supposed to have the best cats on the market from what I have heard from many of the hard-core performance people.