hey guys have a weird problem that just manifested itself about a week ago. I have a 97 gsx with 16g, fmic, hks ssqv, 2.5" exhaust, denso 255, gutted cat, hallman mbc, and stock injectors. Since i bought the car a few months ago the a/f has been in the 15's while cruising and at idle. I have a aem uego wideband btw. Anyways i was driving a couple weeks ago and noticed my a/f was starting to run in the 12-11"s at idle and while cruising. I thought that it was possibly an o2 sensor so i went ahead and changed it out because i had planned on it anyway since the po hacked the harness for a narrowband o2. This did not fix the problem so i am baffled. I have read that there have been rich running issues with the stock fpr not being able to allow enough fuel to bypass but it would have done it before if this was the case. My second thought after o2 was possibly an iat sensor or coolant temp but with a scan tool while pulling a code it showed my engine temp was 210 deg so that rules it out (code was for fuel trim because i've had to compensate with my safc) After further research found that our cars have the iat sensor in the maf sensor so that got me to thinking could my maf be going bad? especially since my factory boost gauge doesn't work anymore, i've heard that it is a sign of a faulty maf when the factory boost gauge no longer works. I appreciate your input and just to verify i've tested 3 times and there are NO BOOST LEAKS thanks again guys