safc II with no logger

[planblars]

I bought my talon from my friend about six months ago its my third dsm, I have tuned with a dsm link and an afc but the afc i did with a logger.

anyway my friend never bought a logger and "tuned" the car himself, I'm not exactly sure what he used for feed back and i don't know if i turst his ability to tune a car, anyway i never really drove the car hard at first because well it pretty much was parked until recently with exception of driving it to and from classes. I recently started driving the car a little harder and its been back firing and showing other sign's of being un-properly tuned. seeing that i don't have a logger i decided the safest thing to do would just be to zero it out and turn the boost down to around 12psi....am i right in thinking this or is there someone that could help me set it a little better. i don't have the money for a logger right now so thats why i figured i should just set everything back. you can check my profile for my mods. this isn't one of those....what should i sey my afc at threads cause i know you guys hate them

any help would be great thanks

 

[CanadianTSi]

You can probably run about 15psi safely.

Just leave it at 0 until you get a logger and some bigger injectors