Car burbles without activated on MHD

JohnDaviz · 03-04-2019, 08:11 AM

I went to no kitties in my DPs on my rebuild engine.

Injectors are Index 12 and 4 months old.

On Inpa engine smoothness (Laufruhe in german) looks fine. No cold start issues, no rough idle and idle RPM is 650.

Since then with either Stg0 and Stage 1 without activated burble, my car burbles nicely for 0.5secs every time i downshift or just let go the throttle.

It is like medium setting on MHD.

Is this normal? I mean i like it, but i am not sure if it should be.

Antetokounmpo · 03-04-2019, 08:20 AM

i think it's normal, mine as done that as long as i can remember.

dcorn · 03-06-2019, 05:12 PM

Pretty sure it's due to the cat removal.

Antetokounmpo · 03-06-2019, 09:07 PM

Quote:

Originally Posted by dcorn

Pretty sure it's due to the cat removal.

I'm fully catted and my car has done it for years.

924er · 03-08-2019, 06:04 PM

Mine is a 6AT FBO with stock exhaust and it barely burbles until I downshift hard with the burble on medium

IllSic_Design · 03-08-2019, 06:09 PM

My car has done it since I bought it, and I do not run the burble settings. But it is not as aggressive as the medium setting like yours, just light burble. I'm catless DP but have secondaries and Muffler Delete and now Eisenmann Race mufflers.

03-04-2019, 08:11 AM	#1
JohnDaviz Private 42 Rep 67 Posts Drives: E92 N54 Join Date: Sep 2018 Location: Germany iTrader: (0)	Car burbles without activated on MHD I went to no kitties in my DPs on my rebuild engine. Injectors are Index 12 and 4 months old. On Inpa engine smoothness (Laufruhe in german) looks fine. No cold start issues, no rough idle and idle RPM is 650. Since then with either Stg0 and Stage 1 without activated burble, my car burbles nicely for 0.5secs every time i downshift or just let go the throttle. It is like medium setting on MHD. Is this normal? I mean i like it, but i am not sure if it should be.
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03-04-2019, 08:20 AM	#2
Antetokounmpo Brigadier General 1552 Rep 3,475 Posts Drives: E90 6MT FBO; '18 F150 Platinum Join Date: Jul 2013 Location: WI iTrader: (3) Garage List 2018 Ford F-150 Pla ... [0.00] 2008 BMW 335xi [0.00]	i think it's normal, mine as done that as long as i can remember. __________________ 2008 335xi 6MT \| VRSF Catless DP \| VRSF 7" FMIC \| VRSF CP \| TIAL BOV \| DCI \| MHD 2+ BC Racing BR \| Stoptech 600 \| Firehawk Indy 500 255 Square \| Atric Altimax 225 Sq. 2018 F-150 Platinum 701A \| FX4 \| 3.5 EcoBeast
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03-06-2019, 05:12 PM	#3
dcorn Captain 77 Rep 940 Posts Drives: 2008 E90 335i Join Date: Dec 2009 Location: NoVA iTrader: (2)	Pretty sure it's due to the cat removal.
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03-08-2019, 06:04 PM	#5
924er Colonel 352 Rep 2,049 Posts Drives: e92 335i '10 Join Date: Feb 2014 Location: Socal iTrader: (0)	Mine is a 6AT FBO with stock exhaust and it barely burbles until I downshift hard with the burble on medium __________________ '10 e92 N54 DCI intakes, ER chargepipe, TIAL BOV, VRSF 5in FMIC, BMS Downpipes COBB e30
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03-08-2019, 06:09 PM	#6
IllSic_Design Colonel 2124 Rep 2,758 Posts Drives: 09 E92 335i Join Date: Jun 2016 Location: Northern California iTrader: (1)	My car has done it since I bought it, and I do not run the burble settings. But it is not as aggressive as the medium setting like yours, just light burble. I'm catless DP but have secondaries and Muffler Delete and now Eisenmann Race mufflers.
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