I may be changing my spark plugs this weekend and I was curious as to as to which ones everyone uses. The engine isnt heavily modified but does have some mods (CAI, Header, Catless DP). I am currently having a problem with the car running too lean and not sure if the cause is plugs, exhaust leak, or dirty mass air flow sensor. I plan on checking things out tonight and work to correct the problem.

 

Lean issue shouldnt be spark plugs they have nothing to do with fuel/air mixture.

 

Well of course plugs do not determine the mix of a/f ratio. However if there are faulty plugs it can cause the mix to not burn fully. Thus causing the o2 sensor to throw a code

 

Stock AC Delco.


/thread

 

QFT

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i just put in some replacement iridium delco plugs for my car, work great