Those who have rev limit increase... quick question?

Rekrul · 05-05-2012, 07:52 PM

So does the rev limit increase on the tachometer IE the red and yellow indicators do they change?

MMME30W · 05-05-2012, 08:41 PM

I have the Dinan D900-40M software.

http://www.dinancars.com/shop/D900-4...re.aspx#page=1

Redline on my tach (start of red region) is normally around 8,250 sitting at idle, which I find curious as their site says its raised to 8,600.

M5Hambre · 05-05-2012, 08:48 PM

I don't think it changes. The rev limiter is higher, however.

soberin · 05-06-2012, 07:22 AM

Quote:

Originally Posted by FongSYM3

I don't think it changes. The rev limiter is higher, however.

The tach will not show a higher redline with the Dinan software for a current (v8) M3, but the max revs are raised to 8600.

CanAutM3 · 05-06-2012, 10:33 AM

The tach on the M3 does not indicate actual revs. The M3 cluster was taken straight out of the E60 M5. This is why we see a red line at 8250RPM (the M5 red line). The engines revs are corrected so that when the needle hits an indicated 8250 the engine is actualy spinning at 8400RPM (the M3 red line). You can actually see this by accessing the hidden menu and look at actual revs.

So the OP question is very pertinent. With an increased cut off to 8600RPM, does the needle on the tacho go past 8250 or does an indicated 8250 now correlate to an actual 8600RPM?

Rekrul · 05-06-2012, 12:08 PM

Quote:

Originally Posted by CanAutM3

The tach on the M3 does not indicate actual revs. The M3 cluster was taken straight out of the E60 M5. This is why we see a red line at 8250RPM (the M5 red line). The engines revs are corrected so that when the needle hits an indicated 8250 the engine is actualy spinning at 8400RPM (the M3 red line). You can actually see this by accessing the hidden menu and look at actual revs.

So the OP question is very pertinent. With an increased cut off to 8600RPM, does the needle on the tacho go past 8250 or does an indicated 8250 now correlate to an actual 8600RPM?

Exactly. Good info here.

tamana · 05-06-2012, 12:34 PM

Great thread

Gearhead999s · 05-06-2012, 01:19 PM

Quote:

Originally Posted by CanAutM3

The tach on the M3 does not indicate actual revs. The M3 cluster was taken straight out of the E60 M5. This is why we see a red line at 8250RPM (the M5 red line). The engines revs are corrected so that when the needle hits an indicated 8250 the engine is actualy spinning at 8400RPM (the M3 red line). You can actually see this by accessing the hidden menu and look at actual revs.

So the OP question is very pertinent. With an increased cut off to 8600RPM, does the needle on the tacho go past 8250 or does an indicated 8250 now correlate to an actual 8600RPM?

Really?So that means that my speed vs rpm calculations are off then!Interesting.

CanAutM3 · 05-06-2012, 02:02 PM

Quote:

Originally Posted by Gearhead999s

Really?So that means that my speed vs rpm calculations are off then!Interesting.

That would be a 1.8% error, nothing dramatic...

klammer · 05-06-2012, 06:12 PM

As further affirmation, my redline is raised and yes it still exceeds "redline" on a regular basis

Gearhead999s · 05-06-2012, 06:54 PM

Quote:

Originally Posted by CanAutM3

That would be a 1.8% error, nothing dramatic...

Yes not a big deal!

Rekrul · 05-06-2012, 06:55 PM

Quote:

Originally Posted by klammer

As further affirmation, my redline is raised and yes it still exceeds "redline" on a regular basis

I mean does the needle visibly go past the 8500 mark? Thats quite a bit of red lol. I mean when I shift at 8400 it appears as if the needle dips slightly past that mark as the car is shifting.

1MOREMOD · 05-06-2012, 06:57 PM

i asked evolve this question before my tune and sal said if i really wanted him to they could do some programing to raise the indicated red line as well as the limit. didnt do this but my rev limit is 8600.

GarfieldKoe · 05-06-2012, 10:45 PM

I don't think it changes

THE-FN-MAN · 05-06-2012, 11:22 PM

So if I've seen my needle at 8600 on the gauge cluster does that mean my motor is actually spinning at over 9000rpm?

DJDeez · 05-07-2012, 01:23 AM

Quote:

Originally Posted by chriszeh

i asked evolve this question before my tune and sal said if i really wanted him to they could do some programing to raise the indicated red line as well as the limit. didnt do this but my rev limit is 8600.

I don't understand how the indicated red line could be changed without physically opening the cluster and modifying it. From what I gather, it's actually a painted extension of the cluster unlike the yellow line.

On a side note, when I asked Sal to increase my limit to 8600 he told me 8500 was more than enough

That being said, I am head over heels with my tune and have never hit the limiter so it was a moot point

1MOREMOD · 05-07-2012, 09:50 AM

You could be right. All I know is I can pass the original red line if I want but rarely do even while on track. I usually shift at around 8000 and often short shift even further on certain sections of the track so I'm not executing a shift while mid corner and unsettle the car.

CanAutM3 · 05-07-2012, 11:22 AM

Quote:

Originally Posted by THE-FN-MAN

So if I've seen my needle at 8600 on the gauge cluster does that mean my motor is actually spinning at over 9000rpm?

Assuming that your tune does not change the tacho correction factor:

8600 indicated RPM x 1.018 = 8750 actual RPM

CanAutM3 · 05-07-2012, 11:24 AM

Quote:

Originally Posted by DJDeez

I don't understand how the indicated red line could be changed without physically opening the cluster and modifying it. From what I gather, it's actually a painted extension of the cluster unlike the yellow line.

This is correct. The ultimate 8250RPM red line on tacho is fixed and is not part of the variable red line mechanism.

stefan · 05-07-2012, 11:45 AM

Why do people increase their redline? Is it really worth it? Any dyno graphs to support it? Sorry to derail; just curious.

Quote:

Originally Posted by CanAutM3

The tach on the M3 does not indicate actual revs. The M3 cluster was taken straight out of the E60 M5. This is why we see a red line at 8250RPM (the M5 red line). The engines revs are corrected so that when the needle hits an indicated 8250 the engine is actualy spinning at 8400RPM (the M3 red line). You can actually see this by accessing the hidden menu and look at actual revs.

So the OP question is very pertinent. With an increased cut off to 8600RPM, does the needle on the tacho go past 8250 or does an indicated 8250 now correlate to an actual 8600RPM?

Great info! Thanks!

MMME30W · 06-12-2012, 09:50 PM

Quote:

Originally Posted by stefan

Why do people increase their redline? Is it really worth it? Any dyno graphs to support it? Sorry to derail; just curious.

Great info! Thanks!

For me, it came with the car when I bought it.

ChrisDUS · 06-13-2012, 08:54 AM

Quote:

Originally Posted by stefan

Why do people increase their redline? Is it really worth it? Any dyno graphs to support it? Sorry to derail; just curious.

a) the M3 revs so eagerly that it feels strange to already shift up before the stock red line

b) the higher resulting rev in the next gear when you shift up will likely give you better acceleration due to more power being available.

05-05-2012, 07:52 PM	#1
Rekrul Captain 28 Rep 814 Posts Drives: Space Gray e92 M3 Join Date: Aug 2011 Location: Purgatory iTrader: (1)	Those who have rev limit increase... quick question? So does the rev limit increase on the tachometer IE the red and yellow indicators do they change?
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05-05-2012, 08:41 PM	#2
MMME30W Riff Raff Refugee 12 Rep 625 Posts Drives: Civic Join Date: Mar 2012 Location: Tampa iTrader: (1)	I have the Dinan D900-40M software. http://www.dinancars.com/shop/D900-4...re.aspx#page=1 Redline on my tach (start of red region) is normally around 8,250 sitting at idle, which I find curious as their site says its raised to 8,600. __________________ Character does count. For too long we have gotten by in a society that says the only thing right is to get by and the only thing wrong is to get caught. Character is doing what's right when nobody is looking... " --J. C. Watts
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05-05-2012, 08:48 PM	#3
M5Hambre Soldier 6 Rep 100 Posts Drives: 2013 M5 SGM Join Date: Dec 2011 Location: San Diego, CA iTrader: (0)	I don't think it changes. The rev limiter is higher, however. __________________
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05-06-2012, 10:33 AM	#5
CanAutM3 Lieutenant General 2626 Rep 10,284 Posts Drives: 2015 M4 DCT Join Date: Jan 2012 Location: Montreal iTrader: (0) Garage List 2015 BMW M4 [4.29] 2006 Audi S4 [0.00]	The tach on the M3 does not indicate actual revs. The M3 cluster was taken straight out of the E60 M5. This is why we see a red line at 8250RPM (the M5 red line). The engines revs are corrected so that when the needle hits an indicated 8250 the engine is actualy spinning at 8400RPM (the M3 red line). You can actually see this by accessing the hidden menu and look at actual revs. So the OP question is very pertinent. With an increased cut off to 8600RPM, does the needle on the tacho go past 8250 or does an indicated 8250 now correlate to an actual 8600RPM?
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05-06-2012, 12:34 PM	#7
tamana Private 0 Rep 51 Posts Drives: nids Join Date: Mar 2012 Location: veren iTrader: (0)	Great thread
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05-06-2012, 06:12 PM	#10
klammer Brigadier General 48 Rep 3,246 Posts Drives: 11 spc gry m3 e90, 07 X5 Join Date: Jan 2010 Location: chicago iTrader: (0)	As further affirmation, my redline is raised and yes it still exceeds "redline" on a regular basis __________________ mods: akra evo, dinan 3.45 diff, ess akra tune, dinan stg.3, Alcon bbk, HRE P40
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05-06-2012, 06:57 PM	#13
1MOREMOD 2016 Track Days - 3\| Ridge 1:52:24\|Pacific 1:33:30 3291 Rep 16,785 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	i asked evolve this question before my tune and sal said if i really wanted him to they could do some programing to raise the indicated red line as well as the limit. didnt do this but my rev limit is 8600. __________________ 02 Tiag e46 M3\|6MT\|GC plates\|MCS c.o.\|GC bars\|GC race control arms\|GC bushings\|BW eng. & tran. mounts\|subframe kit\|BW race shifter\|BW Jaffster\|Euro header\|BW exhaust\|K&N c.a.i.\|Epic race tune\|Rouge pulleys\|Seibon CF hood\|CSL bumper\|apr gt 250 & splitter\|ST-40\|XR-2\|SS lines\|half cage\|Recaro profi\|Profi 2 harness\|BMWpedals\|BW studs\|
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05-06-2012, 10:45 PM	#14
GarfieldKoe New Member 0 Rep 7 Posts Drives: bmw Join Date: May 2012 Location: good iTrader: (0)	I don't think it changes __________________
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05-06-2012, 11:22 PM	#15
THE-FN-MAN Captain 15 Rep 900 Posts Drives: E92 M3 x2 Join Date: Feb 2012 Location: the wood iTrader: (0)	So if I've seen my needle at 8600 on the gauge cluster does that mean my motor is actually spinning at over 9000rpm?
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05-07-2012, 09:50 AM	#17
1MOREMOD 2016 Track Days - 3\| Ridge 1:52:24\|Pacific 1:33:30 3291 Rep 16,785 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	You could be right. All I know is I can pass the original red line if I want but rarely do even while on track. I usually shift at around 8000 and often short shift even further on certain sections of the track so I'm not executing a shift while mid corner and unsettle the car. __________________ 02 Tiag e46 M3\|6MT\|GC plates\|MCS c.o.\|GC bars\|GC race control arms\|GC bushings\|BW eng. & tran. mounts\|subframe kit\|BW race shifter\|BW Jaffster\|Euro header\|BW exhaust\|K&N c.a.i.\|Epic race tune\|Rouge pulleys\|Seibon CF hood\|CSL bumper\|apr gt 250 & splitter\|ST-40\|XR-2\|SS lines\|half cage\|Recaro profi\|Profi 2 harness\|BMWpedals\|BW studs\|
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