first Dsm problem

ok i just got this car like a month ago , first week was fine , but a couple days ago it stared shaking alot at wot , feels like I am hitting rev limiter and it won't go no where????? i dunno, so if there is any DSM pros , help me out!

91 Laser Rs turbo

Mods :
3in custom full exhaust.
walbro fuel pump
srp manual ball and spring boost controller set at 13psi


PS > Sorry for posting in in the wrong forum the first time.

does it happen when its only at wot? if so, is it immiditly at wot, or only when it hits full boost?

i ran into that problem whenever i was in 2nd at wot, it turned out my plug were grounding out becasue there was to much carbon build up. check them, or just replace them with new plugs/wires.

what version of walbro pump do you have?

yeah is pretty much when it hits full boost it just starts stuttering , i replaced plugs, wires and i got a new coil pack.

ok update, i ran it a minute ago i went wot the 1st time, it stared stureting againg , but rapidly I let go of the gas and i did it a second time and this time it worked fine.

what did you gap your plugs too? lots of times that a problem since they usually come gapped for NA cars. gap them to .28 and never use platinums

maybe that will help a lot! I have platiums 2!!
do you guys think i am getting a lot of knock??