No sound of rev-matching

Rush7887 · 01-24-2018, 05:21 AM

Hi, I am new here so please excuse me for wasting your time if similar posts exists.
So my issue is when downshifting in manual mode or in auto my car no longer makes this great noise (when you overdrive or rev-matching on down shifts they over way to call it). I tried it in M mode and in different specs (the transmission in 5 and in 1) still no sound when you downshift. Local mechanic says it is idle control valve but I have no faults. Could anyone suggest what it could be and what should i check?
Thanks in advance.
Car specs : 2010 bmw m3 e90, dct, 46.000 km, ESS exhaust

roastbeef · 01-24-2018, 05:58 AM

you have to be going fast enough for the rev's of the lower gear to shoot up high. you also have to have the DCT level at four or five.

///Mobbin · 01-24-2018, 07:39 AM

Try the Alpine GTS DCT tune, I found it gave a healthy dose of rev-matching when I had it.

dparm · 01-24-2018, 08:03 AM

The sound is very inconsistent, in my experience. It really depends on a variety of factors: engine load, engine speed, ambient temps, etc.

Sandye90m3 · 01-24-2018, 08:12 AM

I don't know about you guys, but if I'm in S4, S5, S6 - I always get the blip and it's audible. I'm sure if it's because I have gutted everything in my exhaust other than the secondary cats but the blips always happen in those modes.

EnVe46 · 01-24-2018, 08:47 AM

My downshifts in s4-6 are always very noticeable, even more so with GTS software. That glorious sound is intoxicating.

Helmsman · 01-24-2018, 09:43 AM

Same here, always a blip in S4-S6 assuming its not very low rev when shifting down.

EJT86 · 01-24-2018, 10:12 AM

dont ever go to that "mechanic" ever again

Rush7887 · 01-24-2018, 11:09 PM

Quote:

Originally Posted by EJT86

dont ever go to that "mechanic" ever again

have no other option

Rush7887 · 01-24-2018, 11:11 PM

i will take the car out on weekend and will try to make video

Ngilbe36 · 01-25-2018, 08:04 AM

*Obligatory comment on how the "true enthusiasts" always get a rev match blip because they did it with their own foot.*

doogee · 01-25-2018, 08:07 AM

Quote:

Originally Posted by Rush7887

Local mechanic says it is idle control valve but I have no faults.

Get a new mechanic please

Scharbag · 01-25-2018, 08:41 PM

Quote:

Originally Posted by Ngilbe36

*Obligatory comment on how the "true enthusiasts" always get a rev match blip because they did it with their own foot.*

Are you saying that with a 6MT you can manage this yourself?

01-24-2018, 05:21 AM	#1
Rush7887 Registered 0 Rep 3 Posts Drives: BMW M3 E90 (2010) Join Date: Jan 2018 Location: Tajikistan iTrader: (0)	No sound of rev-matching Hi, I am new here so please excuse me for wasting your time if similar posts exists. So my issue is when downshifting in manual mode or in auto my car no longer makes this great noise (when you overdrive or rev-matching on down shifts they over way to call it). I tried it in M mode and in different specs (the transmission in 5 and in 1) still no sound when you downshift. Local mechanic says it is idle control valve but I have no faults. Could anyone suggest what it could be and what should i check? Thanks in advance. Car specs : 2010 bmw m3 e90, dct, 46.000 km, ESS exhaust
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01-24-2018, 05:58 AM	#2
roastbeef Lieutenant General 11865 Rep 12,880 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	you have to be going fast enough for the rev's of the lower gear to shoot up high. you also have to have the DCT level at four or five. __________________ Instagram; @roastbeefmike
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01-24-2018, 07:39 AM	#3
///Mobbin Colonel 1551 Rep 2,772 Posts Drives: m3 Join Date: Jul 2011 Location: Houston iTrader: (3)	Try the Alpine GTS DCT tune, I found it gave a healthy dose of rev-matching when I had it. __________________ 2020 M2 Competition \| 3.0L \| DCT
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01-24-2018, 08:03 AM	#4
dparm Stop the hate, get a V8 3928 Rep 8,631 Posts Drives: C7 Corvette, Spec E46, G87 M2 Join Date: Jun 2013 Location: Frisco, TX iTrader: (1)	The sound is very inconsistent, in my experience. It really depends on a variety of factors: engine load, engine speed, ambient temps, etc. __________________ Now: 2017 Corvette Grand Sport, 2001 BMW Spec E46 race car, 2025 BMW M2 Past: 2011.5 M3 sedan ZCP
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01-24-2018, 08:12 AM	#5
Sandye90m3 Major 190 Rep 1,157 Posts Drives: M3 Join Date: Oct 2009 Location: Calgary, CA iTrader: (0)	I don't know about you guys, but if I'm in S4, S5, S6 - I always get the blip and it's audible. I'm sure if it's because I have gutted everything in my exhaust other than the secondary cats but the blips always happen in those modes. __________________ M3.E90 JZB *Coded.GTSDCT.BomizValved.TurnerTestPipes.ResDelete .EurochargedTune.AAFilter.HRER40s*
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01-24-2018, 08:47 AM	#6
EnVe46 Major 1058 Rep 1,221 Posts Drives: 11 E90 M3 LeMansBlue Join Date: Nov 2011 Location: Fort Lauderdale, Fl iTrader: (1)	My downshifts in s4-6 are always very noticeable, even more so with GTS software. That glorious sound is intoxicating. __________________ 2011.5 E90 M3 LeMans Blue
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01-24-2018, 09:43 AM	#7
Helmsman Major General 5484 Rep 7,657 Posts Drives: 2011 AW E90 M3 ZCP Join Date: Mar 2014 Location: Stockholm, Sweden iTrader: (0)	Same here, always a blip in S4-S6 assuming its not very low rev when shifting down.
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01-24-2018, 10:12 AM	#8
EJT86 Brigadier General 2429 Rep 3,793 Posts Drives: 2018 M2 Join Date: Mar 2014 Location: Boston, MA iTrader: (0) Garage List 2022 BMW M240i [10.00]	dont ever go to that "mechanic" ever again
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01-24-2018, 11:11 PM	#10
Rush7887 Registered 0 Rep 3 Posts Drives: BMW M3 E90 (2010) Join Date: Jan 2018 Location: Tajikistan iTrader: (0)	i will take the car out on weekend and will try to make video
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01-25-2018, 08:04 AM	#11
Ngilbe36 Captain 1631 Rep 880 Posts Drives: 2011 E90 M3, 2019 F150 Join Date: Mar 2017 Location: MI iTrader: (0) Garage List 2011 BMW E90 M3 [0.00]	Obligatory comment on how the "true enthusiasts" always get a rev match blip because they did it with their own foot.
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