Auto Trans with Exhaust/muffler
09-06-2009, 05:17 AM
#11
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My Ride: 2004 BMW 545i
Originally Posted by tex_phil' post='999798' date='Sep 5 2009, 10:23 PM
What is this resonance cone you talk about?
To be honest, when I put on the magnaflow, it seem like something is blocking for all the air to be released, like its restricted. But then again, I guess thats why there was two mufflers. I think for the 545, QUADS are a must......
09-06-2009, 07:21 AM
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i think i understand what youre referring to? in manual trans, the driver has the ability to stay in low gear, thus maintaining the rpms higher for consistent sound. in auto, the trans constantly switches gears for best fuel economy, thus keeping the rpms low. in essence, the sport auto is behaving like manual by maintaining the rpms higher.
09-06-2009, 10:39 AM
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My Ride: 2004 BMW 545i
Originally Posted by unknown' post='1000098' date='Sep 6 2009, 11:21 AM
i think i understand what youre referring to? in manual trans, the driver has the ability to stay in low gear, thus maintaining the rpms higher for consistent sound. in auto, the trans constantly switches gears for best fuel economy, thus keeping the rpms low. in essence, the sport auto is behaving like manual by maintaining the rpms higher.
Very well put, thank. I guess to duplicate that, have to be in manual or DS Mode.
09-06-2009, 01:49 PM
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Originally Posted by flyingpuck' post='999720' date='Sep 5 2009, 07:29 PM
I always drive in Sport, and I installed a Resonance Cone, that did the trick!! 
Is that why your tranny went?
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