Emissions failure
#11
I have an off road x-pipe on mine lol. Lucky for me the state of ohio doesnt give a hoot about the enviornment. Its probably those cats tho because a buddy of mine had the same pipe on his 08 went through a random check point and failed.
#12
emissions
ok it sounds like the rear oxygen sensors probably are turned
on.
you can return it to the Roush tune, but if the front oxygen sensors
are further back in the exhaust stream now, there might be a
trouble code that gets generated. it wouldn't hurt anything to try
it though.
on.
you can return it to the Roush tune, but if the front oxygen sensors
are further back in the exhaust stream now, there might be a
trouble code that gets generated. it wouldn't hurt anything to try
it though.
#14
The front O2 sensors are used to regulate the air / fuel mixture, the rear O2 sensors only vefify that the cat converter is cleaning up the exhaust. I doubt anyone turned the rear sensors off, that would be considered tampering an emission conrtol device. The EPA would be all over that.
#15
With no cats, you can smell unburnt fuel in the air. With cats, no smell. The hi-flows just don't burn enough of the fuel and are known for failing. I would cut them out and weld your stock cats back in.
They are street legal, and meet all the requirements, but they don't work well enough in some cars to pass.
They are street legal, and meet all the requirements, but they don't work well enough in some cars to pass.
#16
Do you know if the stock cats & h-pipe will bolt on to the Kooks l/t headers? i finally found a stock h-pipe & cats but wonder if im going to have to go to a muffler shop & have them cut the system up! i hope not,paid way too much to cut that Kooks system up!! Thanks for all the help.
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mrappe
V6 (1994-2004) Mustangs
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09-26-2015 10:16 AM