anybody have problems with check engine light after removing cats
03-28-2004, 12:48 AM
#1
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anybody have problems with check engine light after removing cats my exaust system consists of :
hooker 1 3/4 headers ceramic coated
hooker off-road y-pipe
dynatech 3in. in and out cat
use to have a 3 inch flowmaster american thunder system but took it out for additonal power now to the point i tried removing my cat before goin to the track but the light came on is theyre any way to get around this
hooker 1 3/4 headers ceramic coated
hooker off-road y-pipe
dynatech 3in. in and out cat
use to have a 3 inch flowmaster american thunder system but took it out for additonal power now to the point i tried removing my cat before goin to the track but the light came on is theyre any way to get around this
Last edited by ZL1camaro; 03-28-2004 at 12:57 AM.
03-28-2004, 12:54 AM
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What year f-body are you running? Our LS1s have 2 cats not 1 and 4 O2 sensors. When you removed the cat did you plug in any O2 simms? When running an off-road y-pipe(y-pipe without cats) on our LS1s we have two choices: A) use O2 simms to fool the PCM into thinking the cats are still there or B) delete the rear O2s via LS1 EDIT.
yeah what he said
03-28-2004, 05:22 AM
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Originally Posted by 14u2nv
What year f-body are you running? Our LS1s have 2 cats not 1 and 4 O2 sensors. When you removed the cat did you plug in any O2 simms? When running an off-road y-pipe(y-pipe without cats) on our LS1s we have two choices: A) use O2 simms to fool the PCM into thinking the cats are still there or B) delete the rear O2s via LS1 EDIT.
03-29-2004, 09:50 PM
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Originally Posted by blk~2000~Z28
He has a special exhaust made only for his "Troll" mobile. Check his post count and do a search you will see why he has no idea how many cats his car has.
This dude is a tool
03-29-2004, 10:09 PM
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my advice, just leave the cats, they are highflow cats anyway. your not gonna suffer too bad from power loss. but if you just cant live with the things on there get 2 oxygen sensor simulators from any store that sponsers ls1tech.com for plenty under $100. then you wont have any problem with a check engine light coming on for reason beign your obd2. or somemore advice, just get some cheapo cutouts and weld them in b4 the cats so you can spare yourself the trouble you've gone though with exuast with alot less hassle.-jim
