[Detroiter]

I have been having this issue come up periodically even after putting hundreds of miles on the car after the flash. I'm running a Tomei UEL header with full catless exhaust on the OFT stage 2 e85 tune. Probably every 3 days it seems my car has trouble finding its idle. While monitoring with the OFT I see that the AFR seems to hunt around going up to mid 15s then jumps down to 13s which is where the car seems to bog down and almost stall sometimes turning off the headlights. I can't seem to find any reason as to why it happens though.