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i have a 2012 bmw 135i with the n55 as well. I bought this car used. the guy bought it new and had it for three months then traded it for a porsche then I bought it from the porsche dealership in omaha called "Woodhouse" and he put a AFE intake and a exhaust on it, many of my friends think it has a tune because it keeps up dead even with a 07 jb4 335i coupe running on map 8. I cant see any sign of tune, I was wondering how do I tell if I have a tune or not? I'm really hoping it doesnt so I can get the JB4 stage 2 tune for it. any help would be great!!
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