car breaks up about 3-4k rpm. it has gotten worse. first every couple of days and now all the time. i have new injectors. i am thinking it is the factory leading coils. any suggestions? thanks justin

 

check plugs.....i had high rpm breakup and new plugs fixed it

 

Also plug wires and coils...

 

thanks guys i will check

 

and you dont think its the 3000k hesistation or a boost leak? check the resistance of your coils

 

I'm getting break up usually in 3rd gear at high rpm. Car feels like its hitting fuel cut even though I'm running 10psi. You think changing spark plugs would help this?

 

I do know if you keep doin it you'll be replacing your engine soon. The best thing to do is to buy a wide band. This will tell you if your running lean at that point. If so, check fuel filter FIRST. Then maybe spark plugs, possibly coils, or primary injector rail leak. Something as easy as grounding solved alot of these issues. Has your battery been relocated? If so you have to ground the crap out of these cars. Hope ya fix it soon.