ok heres the deal if i take car up to 4500 slow its not as bad but if i romp on it it cuts out really bad ive been told it is an ignition prob but ive check my msd,msd coil new cap,rotor,wires and its still there im at my ropes end its driving me nuts what else could it be? my fuel psi is fine "taped gauge to windshied" i have a 87 tpi with maf and custom chip can anyone help me???i would be eternally grateful if anyone can solve this prob thanks

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1992 camaro RS w/ 350tpi
195cc AFR heads with compition port work milled to 58cc
1 3/4 hooker long tube headers
4" mufflex system
custom ED Wright chip
eddelbroc intake base and runners and much more
new best ET 13.5 @104.66 on stock heads
no times with new afr heads hoping for 12's on motor
http://www.nav.to/badass355tpi

 

What you need to do is pinpoint where the problem first started. Did it start happening before the MSD? Check the rev-limit chip, it may be malfunctioning. Also check to see if the valves may be floating. My friend bought a Mustang (too bad for him) that when he would take it to high RPM it would do the same thing. We checked it out and the rocker arms where actually pushing down on the retainers and not the valve stems. This caused the valve to come up past the retainer just enough to where the locks let the valves slide down. Intern, never letting the valve fully close. Also maybe check the gapping on the spark plug.