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

Ignition issues

Old 01-22-2019, 06:49 PM
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Ignition issues

Hey guys, recently bought my 07 cobalt ss, maybe 2 months ago. I'm not 100% on all mods done previously. Stage two clutch and stage 2 pulley system. She's pushing 15lbs from the stock S/C

What spark plugs/ gap spacing are you guys using? Stock says .035 and the ones I pulled were all right around 0.048. and I've read some people go as low as 0.025. can't get a clear idea for what I should try
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currently waiting on ZZP for some high voltage lsj coil packs. Any other advice? Or should I just keep playing with gap spacing till she runs right?
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Old 02-07-2019, 06:24 PM
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stock is .043

my engine won't rev past 6000rpm with that big of a gap.

i have mine around .030
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Old 02-10-2019, 12:38 PM
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With those mods you should run 1 step colder plugs from stock at .035 gap. I believe they should be NGK BKR7E
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