My car was at almost 39k miles when I realized I'd forgotten about changing my spark plugs. It was idling bad & I had a CEL.
I replaced the stock plugs w/ IK16's for my gt, cleaned my Air Filter
, & did a good clean on my MAF.
Running smooth as new. Acceleration is better, it feela little bit snappier than stock & doesn't seem to struggle near redline, & my fuel economy has really gone up. Not a super hp boost, but it's running very cleanly now.
$55 well spent.