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  #1  
Old 01-23-2020, 07:01 PM
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Exhaust Cutout

I am a subscriber to ECS’s weekly sale emails and I received one about exhaust cutouts. Do I need to get the dual ones, or can I put a single cutout before it splits off into the two pipes?
Do I need to re-code any of the exhaust sensors?
And finally what size do I need for the OEM exhaust on a 3.0?
Link to the site:
https://www.ecstuning.com/b-ecs-part...pdk=AAAABgQEAg


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Old 01-24-2020, 06:05 AM
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I don’t recall the exhaust combining together on my M54 motors. I thought they are separate from head to the tailpipe. Heard of people adding cross pipes but not sure if on the 8 or the 6.
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Old 01-24-2020, 07:30 AM
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Originally Posted by andrewwynn View Post
I don’t recall the exhaust combining together on my M54 motors. I thought they are separate from head to the tailpipe. Heard of people adding cross pipes but not sure if on the 8 or the 6.
I meant like at the very end where it splits out to the mufflers. Now that I think about it, it’s almost impossible to fit one of those in that distance. Do I guess I only need a single one
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Old 01-24-2020, 08:06 AM
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To make any sense the cut out needs to be before the muffler. You would need two one for each bank (or add a combining y pipe and another to split back to the two mufflers. ).

I don’t know enough about exhaust systems to advise on if combining Into one pipe and splitting back would be a problem for the system to work properly and I would not recommend mixing the two banks together without somebody with history and experience doing exactly that procedure.
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Old 01-24-2020, 08:58 AM
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Originally Posted by andrewwynn View Post
To make any sense the cut out needs to be before the muffler. You would need two one for each bank (or add a combining y pipe and another to split back to the two mufflers. ).

I don’t know enough about exhaust systems to advise on if combining Into one pipe and splitting back would be a problem for the system to work properly and I would not recommend mixing the two banks together without somebody with history and experience doing exactly that procedure.
For best sound, where in the exhaust system would you suggest? I could do before the cat, not 100% sure about the resonator but maybe after it. I’m not sure if I should put it before the 1st muffler or not.
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Old 01-24-2020, 10:58 AM
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Before the cat would be very difficult and would sound terrible anyway. After resonator would probably be best IMO.
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Old 01-24-2020, 01:08 PM
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Before you take this route, have you performed the Golf Tee mod on the exhaust flap? Google it for an E46. I ASSUME an E46 330 and your x5 have the similar exhaust/muffler system where the flap inside in the dual tip opens only at certain RPM ranges to allow more air flow/better meaner sound... You can look inside your dual tips and see if the flap exists and or is closed. If you open it fully manually and put a golf tee in the vacuum line then you will like the sound more. But don't forget it IS just a 6cyl and will not bark like a 8 cyl

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Old 01-24-2020, 01:27 PM
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But don't forget it IS just a 6cyl and will not bark

Are you sure about that?

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Old 01-24-2020, 01:29 PM
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Cut outs should be placed right after the cats, one for each bank.
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Old 01-24-2020, 01:52 PM
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Quote:
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Are you sure about that?

It does sound nice. What have you modded? A factory M54 with factory exhaust is so quiet compared to this.
Mind you a V8 sounds still a bit throatier... This 6cyl sounds great for a 6 cyl.

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