My evo is a built 2.0 with a 6262 running on speed density(gm iat/omni 4 bar). I normally run aem ems but still have my stock ecu with my SD tune on it just incase something happens with the aem, i can put the stock ecu in to check differences or whatever.

Saturday night i do a hard 1st gear pull, go for 2nd gear, and now the car doesnt want to stay idling on it's own on the aem (i can give it gas and it will stay running), and with the stock ecu, it will start and idles about 2000-2500(feet off pedals). On the aem, it wont go past 3k, on the stock ecu it doesnt like throttle input at all really. (Can get video if needed) I checked for leaks, i changed plugs, no difference. I'm thinking the map sensor died and have a new one on the way but i'm not positive if that will fix it so figured i will ask to see if anyone else has had similar issues. Seems the car is running rich.

Any other info needed, just lmk. I have another race in less then 2 weeks and this is boggling my mind on what could be the issue. Thanks in advance.