its probably because theres a leak through the dduct tape... and you have 2 BOVs... try plugging up the hole from your stock bypass valve with a shift light cover and a clamp... your idle is like that because of your open atmosphere BOV...
i have the same problem except my idle stays steady, but its after acceleration (when i clutch in), is when my idle fluxuates like that... i have no other vaccum leaks neither (or at least from what i checked)... im going to put back on my stock hotpipe with out the BOV and see how my idle is and let you know... but i think one way to fix it is the S-afc and a certain setting...
anyone else know how to fix it and maintain the BOV?? i have the HKS super sequential...
i also set my idle to sit a teeny bit higher just enough to where it wont die all the time, but now it idles high enough to where when my turbo timer counts down all the way, my car shuts off and turns back on and restarts the turbo timer...
PS.. not trying to jack your post, just heping you and me get more answers...
