OK, 2 things come in mind. #1, What is your spray on point? #2, When you say part throttle, do you mean like 1/2 throttle and your at say 5-8 #'s of boost and your alky is just turning on? The reason being "IF" your alky is coming on at 1/2 throttle pushing 5-8 #'s of boost, then your problem is that when the alky activates at half throttle, it's drowning out your motor and will cause it to rich knock. I have the same problem too. Your gonna half to be either under the alky spray on point or your gonna have to be on it balls to the wall. Thats the only thing wrong with the alky kits. There is no good driveability under moderate boost levels like 10-15#'s of boost. I was thinking there should be a tps reading to the SMC kit that way there would be a lower pump speed under moderate boost. That would be cool. Now, the next thing on my mind is, I did receive the wrong PP the first time around. Are you sure that you received the correct PP for your plenum? Next is, During your part throttle, what is your 02's reading? Do you have a functioning EGR? Or one at all? I know EGR functions under part throttle. If you haven't checked your EGR in along time and you have high miles, then at least pull it, install a vacuum pump and see if it holds vacuum and clean out the EGR passages in the head with a TON of carb cleaner and let sit, then go back and dowse it again. Then go and beat the crap outta your car to blow out all the built up carbon.
