Okay so i have a 2006 subaru wrx Tr. i originally bought the car August of 2021, i bought it needed a tune. The car has the following mods, FMIC (unknown brand), air filter, and catless downpipe. The car was not maintained properly when i looked deeper into it. I bought a cobb acessport, and tried loading one of the maps it came with, the 91 ANC tune map. And i do put 91 in it whenever i put gas. And as soon as i loaded up the map it started sounding choppy. Like a cammed out corvette. Then the car all of a sudden didnt want to turn on. It sat for like a month or two and recently last month we took off the intake manifold and gave it new injectors, new sparkplugs, and a couple more things. When we put everything back, filled it all up with its fluid. Still did the same, built no boost, would not idle good, still sounded really choppy, would barely make it to 2,000 rpm before dieing in its own throttle, and would shake back and forth if you tried to create boost. Until last week where we my grandpa disconnected the MAF sensor and it all of a sudden was normal, made boost, idled good, only thing is that it kinda stutters to turn on, but when it turns on it runs and drives like it should. So we suggested it was the MAF sensor. So we headed to autozone and got a DENSO MAF sensor which was the same it had orginally. Put it on today and it started getting all choppy again once plugged the MAF sensor. It was brand new and as soon as we took it off it ran perfect again. We were thinking it has something to do with the cobb accessport. Cause as soon as the MAF sensor is connected it goes bad. Idk if you have to get a custom E-tune made and download on your accessport in order for the cobb A. And the MAF sensor to be compatible. We are kinda in a stuck bubble. But the car runs and drives good. Makes boost and everything just it has the MAF sensor unplugged so it stutters when turning on but it does eventually turn on. If anyone knows about the acessports and what you have to do lmk. Maybe you have to get a custom E-tune then download it from your computer to your accessport then through the accessport load it up, idk im just kinda stuck at this point.