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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Stage 2 Dyno Shootout – MHD vs BM3

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      01-03-2023, 09:39 PM   #45
Sundinisagod
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Originally Posted by AmuroRay View Post
Unlike BM3, MHD is load based so you don't really gain additional power once targets are met.
What about switching to 93 octane map?
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      01-03-2023, 09:41 PM   #46
AmuroRay
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Originally Posted by Sundinisagod View Post
What about switching to 93 octane map?
You could try, but again - once the car has met it’s targets, it’s it’s likely not going to make any more power, especially at the top end where MHD starts decreasing boost towards redline.
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      03-27-2023, 04:58 PM   #47
feri130
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Originally Posted by AmuroRay View Post
You could try, but again - once the car has met it’s targets, it’s it’s likely not going to make any more power, especially at the top end where MHD starts decreasing boost towards redline.
Why mhd starts to decrease boost after hitting peak?
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      03-27-2023, 04:58 PM   #48
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Why mhd starts to decrease boost after hitting peak?
It’s a form of a soft limiter I believe.
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