Exhaust Question??

[scottsee]

lol

[kjewer1]

Gutting the cat or removing it will certainly not foul the rear O2 sensor. The only reason it gives a DTC is because the rear sensor sees an O2 voltage trace that cycles like the front sensors output rather that more of a flatline. This is why removing the rear sensor from the exhaust stream but leaving it hooked up will often eliminate the DTC/CEL.

Its possible to gain 25 hp on a turbo car for sure from opening up the exhaust, but not on an NT unfortunately. For the record, I've seen 10 second turbo DSMs pick up ~40 whp from dropping the 3" catback and running an open downpipe. Thats a shitload of power at that level. But off topic...

[ADDKID]

hey i have a 99 eclipse gs does any one have the apexi n1 catback on thier dsm if so what does it sound like and does any one know where i can hear a sound clip of what it sounds like on a dsm non turbo?
thanks

[scottsee]

DSMtuners has an Exhaust Clip thread. Alot of them are old broken posts. Best i can do for ya.