2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

Random Engine Misfire

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Old Dec 21, 2008 | 11:18 AM
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Random Engine Misfire

Does anyone know what could be causing this problem at idle?? I'm running NGK BKR7E and I believe they are gapped around .36-.38.

I'm running 60s and a 2.8 pulley and a custom tune.

Last edited by flash13brandon; Dec 22, 2008 at 08:43 AM.
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Old Dec 21, 2008 | 04:48 PM
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Make sure your MAF is clean. A contaminated MAF with usually throw this code. Get some electronics spray cleaner from radio shack and spray it. Don't recommend touching the filaments with anything though. The spray usually works just fine.

Otherwise, that code is common for larger camshafts if you have made that change.
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Old Dec 22, 2008 | 08:43 AM
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Have not made that change. Thing is, on stage 2 tune I did not throw the code but as soon as I got 60s it came on...Anyone know what parameter needs to be changed to fixed this problem?
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Old Dec 22, 2008 | 08:50 AM
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Originally Posted by flash13brandon
Have not made that change. Thing is, on stage 2 tune I did not throw the code but as soon as I got 60s it came on...Anyone know what parameter needs to be changed to fixed this problem?
retune?
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Old Dec 22, 2008 | 08:55 AM
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Trying to figure out exactly what to retune tho...
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Old Dec 22, 2008 | 06:22 PM
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probly a bad tune. who's tune do you have?
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Old Dec 22, 2008 | 10:54 PM
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Originally Posted by flash13brandon
Does anyone know what could be causing this problem at idle?? I'm running NGK BKR7E and I believe they are gapped around .36-.38.

I'm running 60s and a 2.8 pulley and a custom tune.
hell...I'm stock and get misfires...had them with my stock plugs...went to a set of ngk bkr7e's...still have them. Car runs fine...only get them at idle too...
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Old Dec 23, 2008 | 03:07 AM
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Was your car retuned for the larger injectors? If not, you are flooding the cylinders with fuel.
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Old Dec 23, 2008 | 05:49 AM
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Originally Posted by cobaltR
hell...I'm stock and get misfires...had them with my stock plugs...went to a set of ngk bkr7e's...still have them. Car runs fine...only get them at idle too...
Same here , since new . Stock then staged , i've had an idle misfire Never pops a code but i can see it on a tech 2 misfire graph. It used to bother me but it doesnt hurt performance any that i can tell.
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Old Dec 23, 2008 | 02:00 PM
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Originally Posted by Bika
probly a bad tune. who's tune do you have?
still never answered my question...

If the tune wasnt by someone credible, you probably have fueling and timing errors. that's the most likely cause of sudden misfires.
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Old Dec 23, 2008 | 07:45 PM
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Originally Posted by Bika
still never answered my question...

If the tune wasnt by someone credible, you probably have fueling and timing errors. that's the most likely cause of sudden misfires.

The tune has some pretty rough parameters that need some work. I was trying to narrow down what causes the misfires. If anyone has a good tune for 60s and a 2.8 then I would really appreciate it.
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Old Dec 23, 2008 | 10:00 PM
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Originally Posted by flash13brandon
The tune has some pretty rough parameters that need some work. I was trying to narrow down what causes the misfires. If anyone has a good tune for 60s and a 2.8 then I would really appreciate it.
maybe
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Old Dec 23, 2008 | 10:07 PM
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You have a tune?? Or are you scared about losing that fastest central florida contest??
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Old Dec 23, 2008 | 10:13 PM
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Originally Posted by flash13brandon
You have a tune?? Or are you scared about losing that fastest central florida contest??
I AM THE FASTEST BALT IN CENTRAL FL TUNE?I GOT ONE BUT NOT FOR 60'S
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Old Dec 23, 2008 | 10:23 PM
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Originally Posted by Corvettespirit
I AM THE FASTEST BALT IN CENTRAL FL TUNE?I GOT ONE BUT NOT FOR 60'S
Well, that wouldn't help me then now would it?
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Old Dec 23, 2008 | 10:33 PM
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Originally Posted by flash13brandon
Well, that wouldn't help me then now would it?
WHAT ABOUT JMS AND HIS WTF-R TUNE?
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Old Dec 23, 2008 | 10:49 PM
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Originally Posted by Corvettespirit
WHAT ABOUT JMS AND HIS WTF-R TUNE?
What do you think I'm made of money? haha
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Old Dec 23, 2008 | 11:56 PM
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Originally Posted by flash13brandon
What do you think I'm made of money? haha
he tune terry's balt before
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