So i bought this car new and turbo'd it a few years later it originally had a drag gen 3 kit on it. after about 40-50k miles the turbo started to get shaft play so i pulled it and had it rebuilt. Thats when the problems started. once i reinstalled it the car would boost fine then start breaking up. the a/f meter would show the car was running lean. After about 300 miles the turbo went again so i decieded to upgrade to the precision sc44 i also changed the manifold and dp at the same time. The same thing is happening plus now it kind of stutters when you first take off. I have not had the car retuned as of yet and am still running the map from the original t3/t4. i know i will have to get it back on the dyno but i am unsure if that is what is causing the problem. below are the specs on the car any advice would be appreciated.

99 civic si
golden eagle sleeves
motor built and tuned by Joe at tempest racing
hondata s200 w/boost obd 1 conversion
apex avcr
rc 550 injectors
b&m fpr
precision sc44
tial wastegate
1 bar map

 

sounds like a possible bad set of spark plug wires or something along the lines of that.

 

Hey joe..the wires are fairly new less than 10k on them. I have not really driven the car over the last 2 years. they are MSD 10mm. I will swap them for some oems and see how that works out. I am assuming you dont think it has anything to do with the new turbo setup then....

 

with all of the new turbo stuff it def. needs a retune.

however, when you swapped JUST the turbo, it should have been pretty close. i think you have something else going on. its generally an ignition probelm. distributor, wires, etc etc.

might not be a bad idea to go to the dyno and bring some spare parts and start messing with it there. you dont really want to keep beating on an untunned car like that.