Stuttering problem

[boostnbuds]

I have the most annoying problem in the world and i cant figure it out. When i spool boost 12 lbs or more my car does this stutter thing and the power isnt there after it happens you can usually smell the lovely sulfur smell from the cat. It doesnt usually do it unless i go more than 60% into the throttle. I dont know what it is some one has got to be able to help me out. I've got no vaccum leaks i have replaced the fuel filter made sure my plugs were clean and gapped i changed the tps sensor and removed the throttle body and cleaned it out real good. i have a new intake and filter i have also run a fuel injection cleaning. i removed the whole intake system and inspected for boost leaks on the clamps... so i've got nothing i need more ideas

 

[luv2rallye]

Have you tested for weak coil? Weak spark is often a cause for studdering beyond half throttle.

 

[boostnbuds]

how would i go about testing this?

 

[luv2rallye]

PM me with your email address and I'll send you the proceedures from my Mitsu manual (too big to put here).

 

[boostnbuds]

For anyone who may have the strange throttle related stutter...I had tested everything checked everything and cleaned everything and it turns out no matter how clean and well gapped your spark plugs are they not be 100% my platinums were only 6-8 months old and apparently that was my problem what a kick in the balls