Do aftermarket hi flow cats really werk?
04-01-2003, 03:26 PM
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Do aftermarket hi flow cats really werk?
can u really tell a difference??....some say they're just testpipes...some say u need the backpressure of the stock.....some say if yer car is obdII like mine, that the CEL will always be on?? whats the truth?
04-01-2003, 03:40 PM
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If it's OBD2 and the aftermarket cat doesn't have a spot for the O2 sensor, yes it will throw a code. Most say they work, but the more power you have, the more power they contribute. Test pipes are STRAIGHT cats...the hiflows are just...higher, flow...