MHD Burble tune not working??

JustWannaBangE92 · 05-05-2022, 01:21 PM

Hoping someone can help me out, Ive got a FBO 07 e92 flashed w MHD. Until about a month ago I was flashed on stg0 with catted DP"s and chopped up stock exhaust ("greasy straight pipe"). The car banged hard between gears and very very hard on decel starting at about 3k RPM's. After doing the full VRSF race setup from the turbos back I expected to bang alot harder since there's nothing in the exhaust to stop it. After flashing MHD stg2 with the same burble settings as before the car hardly makes any burble noise. The best way to explain it is, it sounds like they're popping in the mid pipe instead of traveling the whole exhaust. I'm getting pretty frustrated because i love the loud gunshots and bangs when I'm out cruising. Hoping someone has had the same problem and can help me resolve. Thanks in advance!!!!

iqraceworks · 05-06-2022, 07:00 AM

Maybe your car decided it was tired of all the stupid shotgun bangs?

In all seriousness....I would double check all of your settings in MHD and make sure something didn't' accidentally get changed.

Dave92N54 · 05-06-2022, 12:38 PM

Honestly my guess would be you probably had an exhaust leak with the hacked up stock exhaust lmao

dubgtr · 05-12-2022, 06:28 PM

If the new vrsf exhaust doesn't have the kats then its probably because of that. The reason the burble works is it dumps raw fuel after the throttle closes on decel. Whether it does this via ign timing or injector pw I don't know, point is the kats retain a lot of heat and the honeycomb inside causes the unburnt fuel to ignite, giving you that burble you crave. No kats, no comb, less burble.

05-05-2022, 01:21 PM	#1
JustWannaBangE92 Registered 0 Rep 3 Posts Drives: 2007 E92 335i FBO w/ VRSF race Join Date: May 2022 Location: WA iTrader: (0)	MHD Burble tune not working?? Hoping someone can help me out, Ive got a FBO 07 e92 flashed w MHD. Until about a month ago I was flashed on stg0 with catted DP"s and chopped up stock exhaust ("greasy straight pipe"). The car banged hard between gears and very very hard on decel starting at about 3k RPM's. After doing the full VRSF race setup from the turbos back I expected to bang alot harder since there's nothing in the exhaust to stop it. After flashing MHD stg2 with the same burble settings as before the car hardly makes any burble noise. The best way to explain it is, it sounds like they're popping in the mid pipe instead of traveling the whole exhaust. I'm getting pretty frustrated because i love the loud gunshots and bangs when I'm out cruising. Hoping someone has had the same problem and can help me resolve. Thanks in advance!!!!
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05-06-2022, 07:00 AM	#2
iqraceworks Brigadier General 2002 Rep 3,731 Posts Drives: 2007 335i Join Date: Aug 2019 Location: Missouri iTrader: (0)	Maybe your car decided it was tired of all the stupid shotgun bangs? In all seriousness....I would double check all of your settings in MHD and make sure something didn't' accidentally get changed. __________________ 2007 335i, BMS DCI, BMS Chargepipe w/Tial BOV, ARM Catless Downpipes, silicone inlets, Bilstein B12 Prokit Suspension, Whiteline subframe bushings, Front/Rear M3 control arms, G-Plus FMIC, Stage 2 LPFP, Custom E40 tune by Justin (V8Bait), xHP stage 3 transmission flash, RB Two Turbos....10.90 @ 128mph
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05-06-2022, 12:38 PM	#3
Dave92N54 Major 528 Rep 1,165 Posts Drives: 09 E92 335i 6MT Join Date: Nov 2020 Location: Westminster, Maryland iTrader: (0) Garage List 2009 BMW 335i [10.00]	Honestly my guess would be you probably had an exhaust leak with the hacked up stock exhaust lmao __________________ 09 E92 335i 6MT / Alpine White / Coral Red / VRSF 7.5" / VRSF DCI / VRSF Catless Downpipes / VTT Charge Pipe / Turbosmart RacePort Gen V / RB OEM Billet Turbos / CD919 Custom Tune / Bilstein PSS9s
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05-12-2022, 06:28 PM	#4
dubgtr New Member 7 Rep 22 Posts Drives: N54 335i coupe Join Date: Jun 2021 Location: Philly iTrader: (1) Garage List 2007 BMW 335i [0.00]	If the new vrsf exhaust doesn't have the kats then its probably because of that. The reason the burble works is it dumps raw fuel after the throttle closes on decel. Whether it does this via ign timing or injector pw I don't know, point is the kats retain a lot of heat and the honeycomb inside causes the unburnt fuel to ignite, giving you that burble you crave. No kats, no comb, less burble.
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