Couple questions about the 08 WRX
First question is simple. I'm in need of new tires and i'm not happy with the factory size, will 225/45/17 fit on my car or is the factory rim to thin? Second I have a custom 3 inch cat back and a custom CAI on my car. I hooked up a boost gauge and around 4k rpms my PSI starts dropping. It goes from around 13 or 14 down to about 7 at 6k rpms, but it will hold the 13 PSI if i don't go over 4k. Someone told me that a smaller turbo will lose PSI at higher rpms but i can't see it losing that much. Also a little while ago a oil line that went to my turbo broke and was spewin oil everywhere and I had to drive it a little bit before i got it fixed. Does the PSI drop sound like a boost leak? Or could my turbo possibly have been damaged from my oil problems?