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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Questions about MHD Stage 1



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      09-19-2019, 03:51 PM   #1
lukemcmullen45
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Questions about MHD Stage 1

I have a 2007 335i e92. I was a little confused with about how much WHP I might be making with my current setup when I go MHD Stage 1.

VRSF DCI
Chargepipe and BOV
91 Octane
Also just got walnut blasting done

How much WHP might this setup make once I flash Stage 1? Also can I go Stage 1+ with setup or do I 100% need FMIC? Also was wondering if it’s true that the burble tune can ruin the turbos as I’ve heard from a few forum posts?

Thanks for any info!
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      09-19-2019, 04:57 PM   #2
Jeff@TopGearSolutions
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340-350WHP

FMIC required for 1+

The burble tune is 50/50. I haven't seen substantial evidence suggesting it ruins it, just hearsay. I've been running it since it was released but I only run it in sport mode which I rarely use.
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      09-20-2019, 09:43 AM   #3
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Use virtual dyno, it's within 5% IMO. I'd highly advise against the burble option.
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      09-20-2019, 02:32 PM   #4
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My car burbles bone stock, so it's been doing it since 2012. It doesn't hurt the car
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      09-21-2019, 06:48 PM   #5
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I realized burble effects on a 6AT is different from a 6MT.

I have a 6AT, and even if my burble is turned to the MAX, it will only burble if I let off and let the RPMs hang on manual mode but driving around in D mode will never actuate burble.

My friends 6MT will burble everytime he shifts.

I'm one of those who think burble is bad for turbos because of excessive heat caused by uncontrolled detonation in the exhaust, but if u drive a automatic in D mode, it's less damaging because it's less frequent
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      09-21-2019, 07:18 PM   #6
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Quote:
Originally Posted by boostE92d View Post
My car burbles bone stock, so it's been doing it since 2012. It doesn't hurt the car
Same. But MHD greatly increases the burbles.
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      09-22-2019, 04:46 AM   #7
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Quote:
Originally Posted by Antetokounmpo View Post
Same. But MHD greatly increases the burbles.
MHD really increases the amount of fuel dumped in to the cylinders. I have been using medium burble for 2 weeks, looking at the piston head before to after there is a huge difference. You can see how rich the car is running after and the carbon build up difference.
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      09-22-2019, 09:14 AM   #8
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Quote:
Originally Posted by Fallenangel123 View Post
Quote:
Originally Posted by Antetokounmpo View Post
Same. But MHD greatly increases the burbles.
MHD really increases the amount of fuel dumped in to the cylinders. I have been using medium burble for 2 weeks, looking at the piston head before to after there is a huge difference. You can see how rich the car is running after and the carbon build up difference.
That's exactly what it does, when you let off the throttle it dumps fuel into the cylinders which causes uncontrolled detonation in the exhaust
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