I was getting a misfire up top over 6,000rpm while changing gears... alot of sputtering, popping etc. The new plugs feel pretty good imo.

These plugs came with the car, they are NGK BPR7ES, and were gapped at .24.

I gapped the new plugs, NGK BPR7ES to .26.

 

good to me- how many miles?

 

Im not sure. I bought the car with 22k miles, and now I have 26,500 on the clock. Being copper, im sure these plugs are long due for a change.

 

Just changed mine at 33K and they looked better than that, can post pics if ud like to see.

 

I would not recommend the BRP7ES for you lightly modded car, they are probably the cause of your misfire. I would step it up the the BRP8ES gapped to .26. Also change the copper plug like oil changes, every 3kmiles

 

WHy do you reccomend the 8's?

I have the 7's and also have some weird issues. Just trying to learn some more and see your line of thought.

 

Im going to be going a bigger turbo sooner or later.

I have read for every 100whp over stock, you should go 1 step colder...which is what I have done.