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      08-10-2022, 10:17 PM   #1
TheGreatM8
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2022 M8 Competition Coupe M Sport Exhaust

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FULL EXHAUST
From connection at Secondary CATS to tail tips.
1800 miles on it.

I replaced with Akrapovic system and no longer need.

Accepting offers.

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Last edited by TheGreatM8; 08-11-2022 at 02:10 PM..
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      08-18-2022, 02:57 PM   #2
toronto_m50i
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2020 BMW X5 M50i  [10.00]
willing to get rid of just the axleback?
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      08-18-2022, 03:54 PM   #3
TheGreatM8
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Quote:
Originally Posted by toronto_m50i View Post
willing to get rid of just the axleback?
Sure, but shipping from Hawaii will almost kill you. lol. Let me know, it would be about 60 lbs and probably in inches:
H: 12
W: 24
L: 60
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      08-22-2022, 11:02 PM   #4
SPANNERSM8
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Just wondering what your thoughts are with the new Akro system? Did you go full system with headers? Did you run it on the dyno to see pre and post?
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      08-23-2022, 09:21 AM   #5
TheGreatM8
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Quote:
Originally Posted by SPANNERSM8 View Post
Just wondering what your thoughts are with the new Akro system? Did you go full system with headers? Did you run it on the dyno to see pre and post?
I replaced the secondary down pipes which had 1 CAT each, so those are now straight pipes.

From what I've been reading I should leave the upper CAT pipes intact because of the horrible exhaust smell it creates without them. But who knows... hahaha

Yes. I went with the full Akra Titanium system. (what a piece of art by the way).

Waiting on the replacement charge coolers then I will take it for a DINO. Unfortunately I didn't DINO before so going with what the Factory says 619 HP.

My guess is about a 50 HP increase.
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      08-23-2022, 07:07 PM   #6
SPANNERSM8
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Thanks for sharing your thoughts The GreatM8, I agree and have read the same about the excessive exhaust fumes dilemma re primary dump pipes. I would love an Akro system but the Australian prices are through the roof here as they are gouging us because some car fanatics are willingly paying $15-$20k (which is what I was quoted also) for a full system...crazy. Shame you didn't to a pre and post dyno to know exactly what the gains were...look forward to seeing your final dyno post on here so we can in time compare
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      08-24-2022, 03:04 PM   #7
Dr Thrillride
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Quote:
Originally Posted by SPANNERSM8 View Post
Thanks for sharing your thoughts The GreatM8, I agree and have read the same about the excessive exhaust fumes dilemma re primary dump pipes. I would love an Akro system but the Australian prices are through the roof here as they are gouging us because some car fanatics are willingly paying $15-$20k (which is what I was quoted also) for a full system...crazy. Shame you didn't to a pre and post dyno to know exactly what the gains were...look forward to seeing your final dyno post on here so we can in time compare
You may be disappointed in the actual HP gain, especially $spent/hp gained, if that’s a thing. I think more are doing it for the sound because our beast M8 don’t sound beastie at all.
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