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Hey HRQTOR
I own a Hamann Tycoon Evo M with ecu and the rear muffler (supersprint) exhaust.
The noise is pretty good from this mufflers, the problem with ECU is that, each time u will take it to the BMW service, they will reset it and u will have to send it all the way to Germany to re map it.
About the wide kit, not sure of they did a great job with the aerodynamics, u can actually feel u loose speed much faster when u lift gas in high speeds due to not good aero.
Now I wanna add downpipes, but debating if it's gonna void my warranty.
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