I recently moved to Arkansas from Albuquerque. My car is running like crap now. I think it has to do with the denser air from the cold, and lower elevation, although, I know turbos don't mind elevation too much, at least not as much as N/A cars. In Albuquerque, I could run 21 psi. Out here, being alot cooler, I have to turn it down to 14 just to avoid fuel cut. I have:
Turbo-back exhaust
hardpipe from intercooler to throttlebody
injen CAI
MBC

Is there any way to fix this problem? Why can't I run stock psi? If i pull off my boost controller, will my car run stock psi? I don't have the stock vacuum lines, so I don't think the stock boost controller will get an accurate signal, since there is a pressure limiter of some sort in the stock fuel lines.

I know most of you will tell me to just get a tune. I have a SAFCII, i just need to get money so I can get it tuned. A friend said he can tune it with a wideband. Don't you need a program to log the data? Can I tune when I am hitting fuel cut?

Any help would be very appreciated. Please no flaming, and only respond if you have experience in this sort of thing.