Well dont know if its the spark plugs but while i floor the car and when it hits about 5000 to 6000 rpms, it'll misfire, it goes booboom boom and then right when it hits 6500 rpms it'll stop and pulls hard till i hit the 7000 rpm range. I think the spark plugs been on my car eversince i bought it. My cars close to the 60k range. Do you guys know whats going on? Could it be the sparkplugs? Maybe something else? I hope not.

 

most likely the plugs.. go with NGK BPR8ES's, about 2 bux a pop.. I mean, take the plugs out and look! takes about 3 minutes

 

bumps for help

 

bumps!!

 

bumppzzzz for HELP!

 

Plugs. Get new ones and gap them correctly. Should be good.

 

What gap are you at?

 

Stock spark plugs at 60k, it should of been changed at least one during that period. Get some new plugs and it should fix it self.

 

My engine would misfire at high RPM's under heavy load, but not misfire under a high RPM light load --turns out it was a bad (weak) coil.
Try new plugs first, if misfire is still there, swap coils with someone if you can and try it again.

 

change spark plugs

 

Change the plugs to the BPR8's. Gap them to 26 or so.

 

sounds like a anti lag system? lol

 

change the Spark Plugs ---- BPR7EIX

 

Geoff,

Why didn't you tell me this in Sept.?

I should use your sig, and I dig your sponsor list! See you in Utah?

Rick

 

Change the plugs, if you upped the boost, go with one heat range colder(Ngk 8's).also, do check the gaps on the new plugs. Ngk sets them at .30 and our cars need them at a smaller gap.