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Can A misfire Cel mean a bad tune?

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Old 07-05-2010, 08:09 PM
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Can A misfire Cel mean a bad tune?

can a misfire tune mean a bad tune. I am getting multiple cylinder misfires. but i have been getting them for like 20k miles. i didnt get them till after the tune
Old 07-05-2010, 08:58 PM
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what kind of injectors are you running
Old 07-05-2010, 09:10 PM
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I am guessing 60's.
Old 07-05-2010, 10:49 PM
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Originally Posted by SCcobaltSS
I am guessing 60's.
no, i have 45
Old 07-06-2010, 12:28 AM
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oh ok. What tune do you have? Your maf is off I am guessing. Unless you have a vac leak.
Old 07-06-2010, 12:30 AM
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the Ls tune. it is a 2007 ls supercharged
Old 07-06-2010, 12:31 AM
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Originally Posted by fupaNINJA00
can a misfire tune mean a bad tune. I am getting multiple cylinder misfires. but i have been getting them for like 20k miles. i didnt get them till after the tune
You answered your own question...
Old 07-06-2010, 12:36 AM
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lsedit

Originally Posted by Edubs
You answered your own question...
no, at the same time though all the stock 2.2 parts came off and supercharger was put in along with injectors, cooling mods and it was tuned. so I am unsure what the deal was

i bought the ls2edit, because at the time it was theoonly thing that could tune the 07 cobalt 2.2. but the tuner kept it... now i lost his number, so i dont know what to do.

Last edited by fupaNINJA00; 07-06-2010 at 12:36 AM. Reason: Automerged Doublepost
Old 07-06-2010, 12:37 AM
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My response was short for a reason. This is a teaching moment, if you will...

Originally Posted by fupaNINJA00
no, at the same time though all the stock 2.2 parts came off and supercharger was put in along with injectors, cooling mods and it was tuned. so I am unsure what the deal was

You need to give all information like this or we won't be able to help you diagnose the problem. It's either in the MAF tuning or the install. Most likely, it's the tuning. If you're comfortable with it, though, it only takes a few minutes to pull the rail and inspect the o-rings on all the injectors. It's just so much more likely that a random multiple cylinder misfire is in the tune...
Old 07-06-2010, 12:40 AM
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Originally Posted by Edubs
My response was short for a reason. This is a teaching moment, if you will...




You need to give all information like this or we won't be able to help you diagnose the problem. It's either in the MAF tuning or the install. Most likely, it's the tuning. If you're comfortable with it, though, it only takes a few minutes to pull the rail and inspect the o-rings on all the injectors. It's just so much more likely that a random multiple cylinder misfire is in the tune...
x2..
Old 07-06-2010, 01:02 AM
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what should i do? find someone to retune it. or find the guy with my tune?
Old 07-06-2010, 01:04 AM
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the answer is definitely yes, because i have the same issue. getting retuned in a couple of weeks or so.
Old 07-06-2010, 08:33 AM
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Who tuned you the first time?
Old 07-06-2010, 11:38 AM
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trifecta. it was my first time getting a tune or i would have caught it before i sent the tuner back and gathered some data logs up so they could fix it. i'm just going to let ottp do it since i have their parts anyway. at the time i got my part, ottp stage 1 was still the 60's and 2.8 option so they didn't have the 42's and 3.0 as a kit. little did i know that they could custom tune, so i went with trifecta.
Old 07-06-2010, 11:38 AM
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this guy chris from west virginia. he had a repaid shop in morgantown. but i think he quit that
Old 07-06-2010, 11:46 AM
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Originally Posted by Brenticus
trifecta. it was my first time getting a tune or i would have caught it before i sent the tuner back and gathered some data logs up so they could fix it. i'm just going to let ottp do it since i have their parts anyway. at the time i got my part, ottp stage 1 was still the 60's and 2.8 option so they didn't have the 42's and 3.0 as a kit. little did i know that they could custom tune, so i went with trifecta.
You can do either, just more data logging is needed. It's not a serious problem, just annoying.

Originally Posted by fupaNINJA00
this guy chris from west virginia. he had a repaid shop in morgantown. but i think he quit that
I'm pretty sure your only options are someone with LS1edit or Vince, and you're probably best off finding a TriFecta dealer or ordering directly from Vince himself...
Old 07-06-2010, 11:48 AM
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yeah. i'm so rich i blow black smoke out at wot.
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