As of late I have had some hesitation at WOT..... starts at about 4500. And seems to clean up at about 6000.....

Is this a common symptom of spark plug change?

I have NGK iridiums BKR7EIX gapped about about .28 if I recall correctly.

Alpha3076 with both ons at about 1.2-1.3 bar.

Thanks in advance!

 

The plugs are great plugs and usually work well in bosted applications. What does your durametric tell you? Any particular cylinder? You could always change them out for some fat wire plus to find out. They are super cheap, the only thing that hurts is the labor for you.

 

I haven't done any durametric logs yet. What parameters should I be logging to look for this?

 

Just went for some runs with the durametric to see which cylinders were misfiring. After a few hard runs it seems to have stopped misfiring....

Could it be that because I usually drive like a grandma the plugs got dirty? Then after the runs they cleaned up?

 

If you removed your IC's for the plug change, check the connections, it could be a minor boost leak

 

I didn't change them yet. Car seems to be running great after some hard pulls.

 

Pulled my plugs today. They are 0.030 or bigger.

I'll try to get some fresh ones in there at 0.025. I bet that will solve my misfire.

 

Do that and you will be fine. Enjoy it!

 

Did a couple runs tonight. No more misfire!