[s-cars] High Boost Stumble

[CLAG500 at aol.com]

Hey Guys,

   I've been noticing a high boost/low RPM stumble for a while. Since I did
the MTM 1+ the car has had a slight stumble in 4th and 5th gears under high
boost. Sometimes it also will hiccup in the lower gears. It kind of dies for
a sec then takes off. I'm getting a consistant 23-24 psi on my boost guage. I
wondered if it could be the BPV sticking. It's a Forge. I took it apart,
cleaned it and added a shim. It seemed to help for a short time but I'm not
sure as I took it apart again tonight and cleaned it again but the stumbling
didn't go away at all. I may try throwing the old Bosch in to see what
happens. Anybody have any ideas on this? The car runs great otherwise. Seems
like it could be boost related as the car doesn't really miss when it's doing
it. It's just a rapid off/on loss of power in the low gears and kind of a
stuttering in the higher gears. I can see it on the boost guage also.

Chad Tobin