too rich

Year/Make/Model: 2006 Mazdaspeed Axela Mileage: 205,000km/127,000 miles Location: Invercargill, New Zealand. Concern: DTC lamp and black smoke from exhaust under boost/fuel economy DTC's: P2178 - System too rich off idle Modifications: HPFP, High flow turbo, FMIC, aftermarket exhaust, running...

Hello, Running a self-tuned base map with a 33% E85 and 91 premium mix. I have advanced ignition timing 4* so far over a couple logs, and no KR logged under any condition. I used an e85 calculator to change fuel gravity for my mix, and have increased fueling tables up to my max rich power...