[335iNavyGuy]

Awesome.. finally installed it, ran on expressway under about 75% throttle for about 10 seconds and boom misfire now it runs like shit.. thats great...

Where should i start looking first..

[cialz]

When you run it with the regular spec how is it? You know the factory config?

[AughtOcho335]

Exactly same thing happened to me today except I was wot on hwy. First day running it as well. I restarted it and it ran just fine. I only have 32,000 miles. How bout you? All sorts of old posts about what to do. Read codes, follow the trail.

Wait till u get it going. With my borla aggressive exhaust and Bms drop in its sounds mean as shit. The people In a few of the cars I passed whipped there necks around like wtf was that!!! It's way more than I was expecting!!!! It requires a new degree of careful

[idrift4wd]

READ AND BOOKMARK THIS PAGE.

http://www.e90post.com/forums/showthread.php?t=631829

IGNITION COIL OR SPARK PLUGS MOST LIKELY!

[335iNavyGuy]

Originally Posted by idrift4wd

READ AND BOOKMARK THIS PAGE.

http://www.e90post.com/forums/showthread.php?t=631829

IGNITION COIL OR SPARK PLUGS MOST LIKELY!

I will replace those tomorrow

[thestein1016]

Originally Posted by 335iNavyGuy

I will replace those tomorrow

I wouldn't replace anything yet. Clear the cel, swap the packs, if it jumps then purchase a few coil packs. I keep an extra in my trunk at all times. You can get OEM for 35 or Delphi for 40

[Jeef]

Originally Posted by 335iNavyGuy

I will replace those tomorrow

How many miles on the car?

[Mike@N54Tuning.com]

Spark plugs??

Mike

[Jeef]

Well from your other thread I assume you have 108k miles! Just change sparks and plugs so you don't have to deal with it later

[335iNavyGuy]

It was just one coil,Im replacing all coils and spark plugs to avoid the issue again

[Jeef]

Originally Posted by 335iNavyGuy

It was just one coil,Im replacing all coils and spark plugs to avoid the issue again

Good idea that's the best way.

[thestein1016]

Originally Posted by 335iNavyGuy

It was just one coil,Im replacing all coils and spark plugs to avoid the issue again

Why? Coils are either good or bad and you can't predict their life span. They don't deteriorate.
Just buy a few and keep them as back up

[335iNavyGuy]

Originally Posted by thestein1016

Why? Coils are either good or bad and you can't predict their life span. They don't deteriorate.
Just buy a few and keep them as back up

Fair enough, i thought they would go bad over time like anything else. I guess i'll just buy one or two to keep on hand. Thanks

[thestein1016]

Originally Posted by 335iNavyGuy

Fair enough, i thought they would go bad over time like anything else. I guess i'll just buy one or two to keep on hand. Thanks

Just run them till they die and save that $ on more parts

[big_c]

Exact same thing happened to me. JB4 G5 and the first time I really get into the throttle in 3rd and POOF power loss and Service engine light. Had to limp home about a mile fortunately.

Two misfires that follow the coils. My theory, worn plugs combined with the added load from the JB4 means dead coils.

Replacing all plugs and the two bad coils before driving it again.

Seriously, I now understand why everyone says to install new spark plugs BEFORE adding a tune if there are more than 20k on them.

[big_c]

Originally Posted by thestein1016

Just run them till they die and save that $ on more parts

Right-

Replace the ones that were toasted and keep the others in your garage so you have less downtime. Can't really predict when they will give up the ghost.