2002 rear cat replacement for louder, deeper exhaust
09-29-2012, 12:50 AM
#11
Senior Member
My friend's 02 5.4 didn't throw any codes after cutting all 4 cats off.
The first vid is so raspy because he isnt running any mufflers. my friend cut the rears off first and ran a super 44 si/do without it sounding any more raspy than someone running super 44s with cats, just a little louder. now without cats, true duals, offroad 44s and a x pipe it sounds a lot more open (almost too much, not sure what diameter pipe he has though), but isn't really raspy... hard to explain haha.
If yours does throw a code you're supposed to be able to get around it by mounting your O2 senors in spark plug non-foulers, or you can buy a programmer. We don't have to worry about emissions here though haha
The first vid is so raspy because he isnt running any mufflers. my friend cut the rears off first and ran a super 44 si/do without it sounding any more raspy than someone running super 44s with cats, just a little louder. now without cats, true duals, offroad 44s and a x pipe it sounds a lot more open (almost too much, not sure what diameter pipe he has though), but isn't really raspy... hard to explain haha.
If yours does throw a code you're supposed to be able to get around it by mounting your O2 senors in spark plug non-foulers, or you can buy a programmer. We don't have to worry about emissions here though haha
Last edited by BlueO2; 09-29-2012 at 12:56 AM.
09-29-2012, 01:09 AM
#12
Originally Posted by Dman3823
What do you do about the check engine light and passing inspection
No check engine light because the headers have spots for the o2 sensors to plug in. just have to extend them a lil bit to reach.
09-29-2012, 07:25 AM
#13
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09-30-2012, 09:47 AM
#14
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[QUOTE=BlueO2;2066391]My friend's 02 5.4 didn't throw any codes after cutting all 4 cats off.
The first vid is so raspy because he isnt running any mufflers. my friend cut the rears off first and ran a super 44 si/do without it sounding any more raspy than someone running super 44s with cats, just a little louder. now without cats, true duals, offroad 44s and a x pipe it sounds a lot more open (almost too much, not sure what diameter pipe he has though), but isn't really raspy... hard to explain haha.
Thats what i wanted to do was to run no rear cats into my x pipe and then into my SLP resonators and then out my 4 inch tips, I dont like the sound of a catless raspy, popping exhaust.
If my check engine light does come on will that over time harm anything or is the only problem going to be a light on on the dash?
The first vid is so raspy because he isnt running any mufflers. my friend cut the rears off first and ran a super 44 si/do without it sounding any more raspy than someone running super 44s with cats, just a little louder. now without cats, true duals, offroad 44s and a x pipe it sounds a lot more open (almost too much, not sure what diameter pipe he has though), but isn't really raspy... hard to explain haha.
Thats what i wanted to do was to run no rear cats into my x pipe and then into my SLP resonators and then out my 4 inch tips, I dont like the sound of a catless raspy, popping exhaust.
If my check engine light does come on will that over time harm anything or is the only problem going to be a light on on the dash?
