I'm new to all this so all help is appreciated. The car would intermittently lose power and have no acceleration. I replaced the MAF senser and now the car goes to an AFR of 8.XX-9.XX under heavy acceleration. The car is has a flex sensor, headers, 3" exhaust, 4.5" intake, dual 340lph pumps, 2.5" pulley, 850 fics. The car currently has a mix of 93 and e85 (26%). I noticed that the o2 sensors were zip tied to the a/c lines behind the lid. I'd assume that is not correct. It did have 2 codes p015c o2 sensor delayed and p0178 flex fuel circuit low. I've attached a test drive log and can add the tune tomorrow. ADDED Tune
Log 23-05-21 16-06-01.hpl
Tune CTS V.hpt