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Running rich after exhaust and midpipe install.

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Old 07-07-2009, 05:41 PM
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Running rich after exhaust and midpipe install.

I have an hks hi power exhaust and i recently put on an agency power midpipe. Now my car smokes when i start it and it smells like un burnt fuel all the time now.
Old 07-07-2009, 05:42 PM
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Was the midpipe the cat delete?
Old 07-07-2009, 05:47 PM
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Reset your fuel trims and go from there. It will always smell like raw fuel now, since you have the midpipe on.
Old 07-07-2009, 05:47 PM
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yeah it was.
Old 07-07-2009, 05:53 PM
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How do you reset your fuel trim.
Old 07-07-2009, 05:56 PM
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you need to purchase a Cobb Accessport and reprogram the cars ECU
Old 07-07-2009, 05:56 PM
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There are two reset procedures, one for the NVRAM and the other for the KAM. Neither will erase your radio presets.

1) With the key in the off position, press and hold the odometer reset button and turn the key to on;
Continue to hold the odo button until the odometer reads "TEST" and then release.
2) Turn the key to off and repeat step one.

This will reset the entire PCM except the KAM which contains the sensor profiles amongst other things. You can reset it with the familiar procedure:

1) Turn the key to on
2) Depress the brake pedal rapidly 20 times in a row until the oil pressure gauge sweeps to halfway and back again.
Old 07-07-2009, 05:59 PM
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Gatta love the smell of no cat. mmmmmmmmmmmmmmmmmm. that'll wake you up in the morning! Or kill you if you stay in the garage to long.
Old 07-07-2009, 06:13 PM
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Ill give that a try. thanks I8U. Yeah i do love the smell of no cat
Old 07-07-2009, 06:18 PM
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Originally Posted by Renesis 8
Ill give that a try. thanks I8U. Yeah i do love the smell of no cat
You should love the fire that comes out of your exhaust now too.
Old 07-07-2009, 06:20 PM
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Originally Posted by Renesis 8
I have an hks hi power exhaust and i recently put on an agency power midpipe. Now my car smokes when i start it and it smells like un burnt fuel all the time now.
normal - what were you expecting ?

unless you are logging afrs you and have actually seen that it is running richer than it was I suspect it is just the same but because of the cat delte you now smell the gas ....
Old 07-07-2009, 06:27 PM
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i like my midpipe too
Old 07-07-2009, 06:36 PM
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OP - It is normal.

It runs rich to help preserve the cat. Resetting the KAM and PAM won't do anything much to help how rich it is running.
Old 07-07-2009, 07:19 PM
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Like it rich and enjoy the flames!!
Old 07-07-2009, 07:56 PM
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8 runs pig rich...enjoy flames for now or buy the AP and lean out the tune....about the only thing to do!
Old 07-10-2009, 03:12 PM
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I have a MM AP i just installed my Agency power midpie dual resonated today....LOUD lol but anyway should i send away for calibration right away or drive it a bit before? Is there anyway to lower the afr myself in the meantime? What are optimal AFR's?...im searching but seeing alot of variance.

Last edited by RX8YA; 07-10-2009 at 03:14 PM.
Old 07-10-2009, 04:52 PM
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actually it's the result of not having a cat converter, congrats on turning your car into a polluting POS, I really wish the EPA would start hunting down and confiscating cars and throwing people in jail for blatantly intentional pollution mongering. There's no excuse for it, the people who do this are too cheap and uncaring to give a damn, scumbags...

Last edited by TeamRX8; 07-10-2009 at 04:56 PM.
Old 07-10-2009, 05:07 PM
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hmmm - don't hold back Team ..
Old 07-10-2009, 06:19 PM
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Oh no TeamRX8 said we are scum bags. Better get rid of the midpipe
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