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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Spark Plugs and Coils Replacement



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      03-17-2015, 02:18 PM   #1
MeeChin
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Spark Plugs and Coils Replacement

Hi guys, so I had a Cobb v2 installed on my 09 335xi coupe. Got some misfiring codes after a while so uninstalled for now. I hear that Spark Plugs and Ignition Coils should be the first thing to check/replace so was curious what this should run. I think ECStuning has a package to buy everything I need using Bosch parts for about $315, or is there somewhere else that can do better?
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      03-17-2015, 02:42 PM   #2
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just replace the spark plugs
if you get misfire codes in a specific cylinder then replaced the coils
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      03-17-2015, 02:50 PM   #3
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As stated above. Replace all the plugs, use the Bosch OEM from ECS or Amazon wherever, then if you still have a misfire, move the coil from that cylinder to another and see if it follows the coil. If it does, replace it.
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