Wondering how my car would do against my buddies 4 door single turbo 335i with exhaust, tune, and downpipe. He thinks hes probably making around 370whp/410wtq? My mods are in my sig..


Here's a run against my friends 135i when he was E85/91 50/50 mix, exhaust, intake, tune


Then we did a rematch when he was just on 91, exhaust, intake, tune & 3 psi less