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is it normal for checkengine light to go on w/hfc

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Old May 13, 2008, 08:36 AM
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is it normal for checkengine light to go on w/hfc

i just put my intake and tbe on few days ago everything went well no leaks and no check engine light, so two days go by and i hop on the parkway for the first time since the installment and with in 5mins of being on the pkwy the cell light go on just want to know if its normal with a high flow cat its a "perrin cat" i am going for a tune in a few days so should i just pay no mind to it??



John
Old May 13, 2008, 08:38 AM
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and has anyone else been having problems getting on this forum??
Old May 13, 2008, 08:44 AM
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When I put on my TBE w/ high flow cat the same thing happened to me. The CEL came on about 2 days later. I just put an anti fouler on and it never came on again. You can probably get one locally at any auto store.
Old May 13, 2008, 08:47 AM
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but doesnt it go away after you get tuned?
Old May 13, 2008, 08:50 AM
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Originally Posted by bbyevo8u
but doesnt it go away after you get tuned?
nope, at least mine didn't after tuning. I did the mechanical fix as stated above and my light has been off for over a year.
Old May 13, 2008, 08:53 AM
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No, the rear O2 sensor is seeing that you have an insufficient cat based on the amount of air it is now seeing. Once you are tuned, you will more than likely be even leaner. Just go to your local autoparts store and pay $5 for the HELP anti-foulers to back the rear O2 sensor out of the exhaust stream.
Old May 13, 2008, 08:57 AM
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Originally Posted by bbyevo8u
but doesnt it go away after you get tuned?
not necessarily. get an antifouler - or use mrfred's rear o2 ecu hack (thats what i run)
Old May 13, 2008, 09:06 AM
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utlimate racing ftw
Old May 13, 2008, 09:33 AM
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Originally Posted by bbyevo8u
and has anyone else been having problems getting on this forum??
yes and it was making me insane before
Old May 13, 2008, 09:38 AM
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make sure you get two anifoulers and screw them together. one on my car did not do the trick
Old May 13, 2008, 09:43 AM
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what do i have to do and how do you use it "anti fouler"? and i have a 9 so my 02sensor is in the cat not the catback!

i always thought that once they tune the ecu you it go's away guess i was wrong!?
Old May 13, 2008, 09:43 AM
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Tuning will have no effect on it. Just buy the $12 spacer and be done with it.
Old May 13, 2008, 09:46 AM
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depending on which anti-foulers you get one will screw into the rear 02 bung then the other fouler into that but you will have to drill out that second antifouler I used a 1/2 inch drill bit because Mach v didnt send anything when my friend ordered his exhaust so i had to do the DIY method.
Old May 13, 2008, 10:38 AM
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Originally Posted by bbyevo8u
what do i have to do and how do you use it "anti fouler"? and i have a 9 so my 02sensor is in the cat not the catback!

i always thought that once they tune the ecu you it go's away guess i was wrong!?
Depends who tunes it. Some tuners like mellon and cookie add ECU Hacks as part of the tune...

or you can hack it yourself like most of the ECU flash guys do.




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Old May 13, 2008, 10:46 AM
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ok i just went to autozone and the guy is going to do it for me "drilling" for $15 tomorrow and the guy happens to have an evo also but he didnt get to see my car cause i drove my k7 gsxr which he had an k6 gixxer also just thought it was really funny anyways the kit comes with two and i think he called it spark plug anti fowlers?? just wanted to let you guys know.....thanks for the help!


John


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