Hi D I rec the chip from performance products . I'm running it in my 500E. It says just by installing it, it gives an addl 40 HP Well I installed it. My car kicks ass it bottom to midrangwe power is exceptional. It pulls all the way to 7000 PRMs i dont rec alsways winding it up that much but its there. Also if you install a tuned exhaust and set of K&N's also modifiy hte AIRbox. The same one brabus sells and renntech sells. I know the secret of there airbox and how they modify it. They sell the amn thing for like 900.00 what rip off!. Email me with your personal email I'll tell you what to do. But do purchase the chip its great. As for the ASR its a half ass setup from PAD I think I'm going to return it.




Good luck D email me if you need anything

Guido

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500E Sold
2006 Mini Cooper S
Modified,pulley,injectors,suspension
2009 E350 Sport AMG package