resonator bypass on 645ci
01-01-2006, 09:37 PM
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My Ride: 645Ci black/red, Eibach springs, K&N air filter, Wetterauer ECU upgrade, Eisenmann 83mmx4 exhaust, 20" Sportec wheels-Michelin PS2 tires, Hamann front add-on lip
Has anyone bypass both their front and center resonator on their 645ci? Does it improve performance and how much does it affects the sound of the exhaust, sound sportier, more resonance, etc? Your input and opinion is highly appreciated 
01-02-2006, 08:57 AM
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If it is anything like the 545, you will get more resonance and no significant improvement in sound or performance. I took the big one off and put it back on.
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