Will dual exhaust mess with computer on 2002?
#1
Will dual exhaust mess with computer on 2002?
Just got the urge to put dual exhaust or bigger single, whatever it may be, on my 2002 ext 4x4 4.0 SOHC. The cat converter on my stock exhaust, if it gets cut out to accomidate the new exhaust will it throw codes to the computer and make the check engine light come on or will i be good? Dont want loud, just want better flow for more power and MPG. We dont have the pollution check crap here in mid MO so inspections and what not isnt a problem, would rather the cat conv wasnt there at all.
Thanks in advance and hope i put this in right area, couldnt find anyplace else.
Thanks in advance and hope i put this in right area, couldnt find anyplace else.
#2
#5
it should throw a check engine light if you remove the 02 sensors and it will not run properly. the computer will revert to a "base" engine map so the will run... but it may not be able to adapt to temp change and other factors. i have a dual exhaust on my truck WITH cats and noticed no difference in power or mileage... only sound
#6
one will set a CEL
two its illegal
three it is already a high flow cat so it gains you nothing but louder exhaust
If anything removing the cat will put the engine outside the computers acceptable configuration range and hurt mileage. There are work arounds for the CEL but you really don't gain anything like you think, maybe in the 80's you would. These engines need new heads and cams before anything else begins to not flow enough.
Thread
Thread Starter
Forum
Replies
Last Post