2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

P0171 Code help

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Old 12-01-2007, 10:02 AM
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P0171 Code help

i got code P0171 after installing my K&N typhoon kit. its fuel system lean trim. will the computer relearn and adjust for more air flow. or is there something i can do otherwise. any help is appreciated. thanks
Old 12-01-2007, 10:04 AM
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did you unplug your battery before installation?
Old 12-01-2007, 10:06 AM
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yeah did u unplug the battery..if u did..dont worry about it...it will go away..the computer will learn
Old 12-01-2007, 11:32 AM
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Mine never re-learned or went away. So if you end up like me a tune is the only thing that can fix it.
Old 12-01-2007, 01:08 PM
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sorry i dont know much about tunes. how much do they typically run and what does it consist of. and did u use the K&N SRI?? thanks for the info guys keep it coming
Old 12-01-2007, 01:12 PM
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SEARCH button. been discussed almost daily. make sure everything is tight, and if it's tight, maf is in correctly, delete the code and call it a day. almost EVERYONE gets that code at one point or time.
Old 12-01-2007, 05:06 PM
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Originally Posted by LS6Rally
sorry i dont know much about tunes. how much do they typically run and what does it consist of. and did u use the K&N SRI?? thanks for the info guys keep it coming
a tune will probably run you a couple hundred. depending on where you go. i would advise you to find someone with hptuners. have you tried resetting the ecu? i would try that first. works for some people. never worked on mine though lol. so i'm stuck with having to get a tune to make it go away. it's not going to hurt your car in anyway so don't worry too much about it. it's just getting more air than it's used to so it's throwing a code. i have the fujita cai, but same thing..same code.
Old 12-01-2007, 05:17 PM
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if you just ahve a CAI, i woldnt waste the money on a tune, IMO. I'd wait until you have some more mods. tuning isnt cheap
Old 12-02-2007, 06:58 AM
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i dotn really plan on doing much more if really anything, unless i go all out with it. i already have another car that i use for the 1/4. i just dont waant to void my warranty
Old 12-02-2007, 07:59 AM
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Originally Posted by LS6Rally
i dotn really plan on doing much more if really anything, unless i go all out with it. i already have another car that i use for the 1/4. i just dont waant to void my warranty
intake doesn't/won't/can't void you warrenty. and it takes 5 minutes to put the stock on in case you're nervous and have to take it to the dealer.
Old 12-02-2007, 09:14 AM
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i know the intake wont , what about the tune?
Old 12-02-2007, 09:35 AM
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Originally Posted by LS6Rally
i know the intake wont , what about the tune?
there's no need for a tune, it's a waste of money with just an intake.
Old 12-02-2007, 12:43 PM
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welcome to the world of modifying Cobalts. We have the most finicky ECU ever made IMO. My engine mods consist of an AEM CAI, CA header, XTC 2.5" de-cat downpipe and an ARK N2 cat-back, and when my dealer hooked up the scanner, I have 11 codes thrown. But owell, I daily drive it with 11 codes with no problems. I'll take care of it with HP Tuners whenever I come up with the money, lol.
Old 12-02-2007, 12:44 PM
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It'll go away. Don't worry. Your ECU will relearn the new fuel maps.
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