need mils with longtubes?

[03redfiregt]

OK so i have an issue. I installed bbk longtubes and a modified mrt h pipe with cats in my car last week. Everything was fine since , except tonight i was on my way home and the check engine light came on! I reset the computer and took it for a ride for a few miles and it did'nt come back on. I did'nt think i needed mils with cats. Has anybody else had this problem? I am not sure what to do?

 

[bdcardinal]

get the code pulled. the CEL comes on for other things besides the cats nto existing. you shouldnt need MILs with cats, however some of the aftermarket cats that are sold arent that great at cleaning up the exhaust.

 

[03redfiregt]

COme on ? i know a ton of you have longtubes

 

[Mirrahasmycar]

get a tuned chip, and get rid of the cats

the MIL shouldn't be on with cats, its the rear O2 sensors that you should check, make sure they are all plugged in

 

[bbueschel]

get a tuned chip, and get rid of the cats

the MIL shouldn't be on with cats, its the rear O2 sensors that you should check, make sure they are all plugged in

Aftermarket cats flow much higher than stock so MIL's are needed to turn off the check engine light. Or get a power programmer or a tuned chip.