Hello all! Okay I can’t figure out how to post a new thread, maybe because I’m a new member, I dunno. Hopefully someone still monitors this thread lol.
Here is my issue. New to me 2007 Mazdaspeed 3. 128,000 miles. Mods were done by a previous owner. 3.5” down pipe, Cobb intake and TIP, MishiMoto FMIC (not sure of the model), CPE hpfp, and a Cobb V3 AP. The issue is I am getting a p02178 and p02188 code. I’ve gone through and tightened all my connections on the IC piping and Intake. Cleaned my MAF. I’m just running a Stage 2 93 OTS map. My ltft’s are way negative. -20.44 and -18.88. They fluctuate between those two numbers and when I hit the gas it jumps to -0.16 (which I realize it’s in closed loop at that point). My AFR doesn’t go above 14.88 unless I’m coasting in gear but it will dip down into the 8s when I am on the throttle. Also my fuel pressure is great. Stays in the 1600-1800 range when I’m on the gas. No dips. I’ve researched the crap out of this and have come up with a hundred different answers, and no one seems to have my exact problem. I know that my turbo is going out but I’m trying to figure out if I have an additional problem causing the rich codes or if it’s just the turbo. Any help is welcome and appreciated!!