what is cold start delete??

monterey · 06-06-2016, 12:34 PM

I keep hearing this term and have no clue what it is.

gfisher99 · 06-06-2016, 12:37 PM

It's coding that stops the secondary air pump from running during a cold start that makes your engine run rough and loud for the first minute or so. Some people code it out since its just an emissions thing to warm up the cats quicker.

monterey · 06-06-2016, 12:38 PM

Is that what makes the car run so dam awful for the 1st mile?

///M Power-Belgium · 06-06-2016, 12:49 PM

Quote:

Originally Posted by monterey

Is that what makes the car run so dam awful for the 1st mile?

Yes .

kb9uwu · 06-06-2016, 12:58 PM

Quote:

Originally Posted by monterey

Is that what makes the car run so dam awful for the 1st mile?

My cold start only lasts 15-20 seconds. I wait for the idle to drop below 1k (15-20 seconds for me) and roll out.

jphughan · 06-06-2016, 01:04 PM

Quote:

Originally Posted by monterey

Is that what makes the car run so dam awful for the 1st mile?

It's also what makes the car sound so damn awesome when you start it up each morning. The cold start put a smile on my face every day when I started heading to work. However, for people with some aftermarket exhausts, especially the test pipe / no-cat crowd, that cold start becomes obscenely loud, especially in parking garages, so cold start delete reduces the risk of neighbors doing things like complaining or worse.

335m · 06-06-2016, 01:14 PM

Quote:

Originally Posted by jphughan

It's also what makes the car sound so damn awesome when you start it up each morning. The cold start put a smile on my face every day when I started heading to work. However, for people with some aftermarket exhausts, especially the test pipe / no-cat crowd, that cold start becomes obscenely loud, especially in parking garages, so cold start delete reduces the risk of neighbors doing things like complaining or worse.

Do you know anyone who does this in Austin or do you need to buy a big name tune for it?

jphughan · 06-06-2016, 01:19 PM

Quote:

Originally Posted by 335m

Quote:

Originally Posted by jphughan

It's also what makes the car sound so damn awesome when you start it up each morning. The cold start put a smile on my face every day when I started heading to work. However, for people with some aftermarket exhausts, especially the test pipe / no-cat crowd, that cold start becomes obscenely loud, especially in parking garages, so cold start delete reduces the risk of neighbors doing things like complaining or worse.

Do you know anyone who does this in Austin or do you need to buy a big name tune for it?

It has to be done in the DME, not via regular coding, so yeah you need a tune.

hpapad01 · 06-06-2016, 01:37 PM

Quote:

Originally Posted by kb9uwu

My cold start only lasts 15-20 seconds. I wait for the idle to drop below 1k (15-20 seconds for me) and roll out.

That's exactly my procedure as well.

vsix · 06-06-2016, 01:38 PM

Quote:

Originally Posted by 335m

Do you know anyone who does this in Austin or do you need to buy a big name tune for it?

Just wait a little and do it on your own, for a fraction of the cost

---> Carly

http://www.m3post.com/forums/showthread.php?t=1231875

jphughan · 06-06-2016, 02:44 PM

Quote:

Originally Posted by vsix

Just wait a little and do it on your own, for a fraction of the cost

---> Carly

http://www.m3post.com/forums/showthread.php?t=1231875

Unless Carly already has other capabilities that require retuning the DME, don't hold your breath. DME changes are completely different from regular coding and VO changes, which from the thread you linked is the most advanced type of configuration that Carly seems capable of doing right now.

Beemdog · 06-06-2016, 03:29 PM

The cold start operation of the aux air pump should help prolong the life of your catalytic converters, esp. the primaries. If you have a cat-less exhaust then the cold start routine is almost worthless, although unburned hydrocarbon emissions will be less with the air pump operating during the first part of warm-up.

Edward · 06-14-2016, 01:53 PM

I have the Akrapovic Evo system with Delete-R so I have no ability to code out the cold war sequence. I don't care though because it is a familiar and audible reminder to me that the car is cold and I personally really like that it's rough and loud and my first few shifts sound epic because of it.

Downside is that my gf can hear my car through two floors when I come home and when I leave. I'm sure people don't like how loud it can be.

BOOF-M3 · 08-09-2017, 09:53 PM

Quote:

Originally Posted by jphughan

Quote:

Originally Posted by vsix

Just wait a little and do it on your own, for a fraction of the cost

---> Carly

http://www.m3post.com/forums/showthread.php?t=1231875

Unless Carly already has other capabilities that require retuning the DME, don't hold your breath. DME changes are completely different from regular coding and VO changes, which from the thread you linked is the most advanced type of configuration that Carly seems capable of doing right now.

Is Carly capable of coding out or coding back the cold start delete in DME yet?

Helmsman · 08-10-2017, 03:45 AM

Quote:

Originally Posted by BOOF-M3

Is Carly capable of coding out or coding back the cold start delete in DME yet?

Nothing I noticed when using Carly the other day. Okay if a light or window code goes wrong but I'd be surprised if they can/would start fiddling with the ECU.

BPMSport · 08-10-2017, 04:03 AM

Carly will likely never be able to change cold start as this is a tuning change, which requires the checksum to be calculated and then flashed back, as well as patches. It's far from a simple coding option. You could pull the secondary air fuse (there is one 40amp and two 15 amp IIRC) and this would kill the noise, but would cause an SES light.

XIX · 08-10-2017, 04:25 AM

Is the secondary air pump used for anything else ? Could be a good weight saving to ditch it if not ?

EnVe46 · 08-10-2017, 04:48 AM

I've debated deleting cold start since I'm moving to south Florida because it's the only time my car is suspiciously sounding or has any tick on start up.

BOOF-M3 · 08-10-2017, 07:26 AM

Quote:

Originally Posted by EnVe46

I've debated deleting cold start since I'm moving to south Florida because it's the only time my car is suspiciously sounding or has any tick on start up.

I'm actually looking to "add the cold start" back. The car I purchased from Braheem had the cold start delete in the tune. It's a BPM tune and the car is strong in every way. I just like the sound of the cold start and want to add it back. I was able to contact Mike Benvo and he did offer a nice discount to add it back and retune/code the car to my specs but I can't imagine changing anything else as the car is tuned to perfection. I have driven several tuned and non tuned E92's and without question I can say that this car feels seat of the pants faster in every way. From a dead start or punching it at 85 she pulls hard, but once she hits that perfect 5,000 rpm mark you can literally feel the car pulling you back into the seat. The steering tightness is phenomenal. It makes non tuned steering cars feel a bit slushy. My E93 which does not have a tune now feels like a Cadillac in comparison to my E92. Which is actually pretty cool in a way as it is nice to have the race car feel of my tuned E92 and the sports car feel of my non tuned E93.

'ringmeister · 08-10-2017, 10:43 AM

Quote:

Originally Posted by BOOF-M3

I'm actually looking to "add the cold start" back. The car I purchased from Braheem had the cold start delete in the tune. It's a BPM tune and the car is strong in every way. I just like the sound of the cold start and want to add it back. I was able to contact Mike Benvo and he did offer a nice discount to add it back and retune/code the car to my specs but I can't imagine changing anything else as the car is tuned to perfection. I have driven several tuned and non tuned E92's and without question I can say that this car feels seat of the pants faster in every way. From a dead start or punching it at 85 she pulls hard, but once she hits that perfect 5,000 rpm mark you can literally feel the car pulling you back into the seat. The steering tightness is phenomenal. It makes non tuned steering cars feel a bit slushy. My E93 which does not have a tune now feels like a Cadillac in comparison to my E92. Which is actually pretty cool in a way as it is nice to have the race car feel of my tuned E92 and the sports car feel of my non tuned E93.

Curious about the change to steering with a tune...Is assist reduced? Is this common with most tunes? Thank, and sorry to veer off topic...

BOOF-M3 · 08-10-2017, 11:30 AM

Quote:

Originally Posted by 'ringmeister

Quote:

Originally Posted by BOOF-M3

I'm actually looking to "add the cold start" back. The car I purchased from Braheem had the cold start delete in the tune. It's a BPM tune and the car is strong in every way. I just like the sound of the cold start and want to add it back. I was able to contact Mike Benvo and he did offer a nice discount to add it back and retune/code the car to my specs but I can't imagine changing anything else as the car is tuned to perfection. I have driven several tuned and non tuned E92's and without question I can say that this car feels seat of the pants faster in every way. From a dead start or punching it at 85 she pulls hard, but once she hits that perfect 5,000 rpm mark you can literally feel the car pulling you back into the seat. The steering tightness is phenomenal. It makes non tuned steering cars feel a bit slushy. My E93 which does not have a tune now feels like a Cadillac in comparison to my E92. Which is actually pretty cool in a way as it is nice to have the race car feel of my tuned E92 and the sports car feel of my non tuned E93.

Curious about the change to steering with a tune...Is assist reduced? Is this common with most tunes? Thank, and sorry to veer off topic...

Yes assist is greatly reduced. Therefore the wheel is much stiffer.

Tylenol Jones · 08-10-2017, 01:40 PM

I recall a thread on here where some people who installed superchargers were getting all sorts of odd issues and engine/ecu problems. Forget the technical details but it turned out deleting the cold start routine had caused the trouble.

Not necessarily relevant info but worth noting. Personally I don't mind the noise but I dont have to worry about neighbors.

06-06-2016, 12:34 PM	#1
monterey Major 339 Rep 1,239 Posts Drives: 2008 M3 Join Date: Mar 2016 Location: United States iTrader: (1)	what is cold start delete?? I keep hearing this term and have no clue what it is. __________________ A job is nothing but work.
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06-06-2016, 12:37 PM	#2
gfisher99 Lieutenant 287 Rep 562 Posts Drives: '11 E92 M3, '18 M2, '22 X3M Join Date: Feb 2016 Location: Austin, TX iTrader: (0)	It's coding that stops the secondary air pump from running during a cold start that makes your engine run rough and loud for the first minute or so. Some people code it out since its just an emissions thing to warm up the cats quicker.
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06-06-2016, 12:38 PM	#3
monterey Major 339 Rep 1,239 Posts Drives: 2008 M3 Join Date: Mar 2016 Location: United States iTrader: (1)	Is that what makes the car run so dam awful for the 1st mile? __________________ A job is nothing but work.
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06-06-2016, 03:29 PM	#12
Beemdog Woof! 352 Rep 1,323 Posts Drives: '11 M3 ZCP LeMans Blue Join Date: Mar 2014 Location: Sonoma Cownty, CA iTrader: (0) Garage List 2005 Dodge Viper [9.00] 2011 BMW M3 E92 [9.50] 2009 Ducati Hypermo ... [10.00]	The cold start operation of the aux air pump should help prolong the life of your catalytic converters, esp. the primaries. If you have a cat-less exhaust then the cold start routine is almost worthless, although unburned hydrocarbon emissions will be less with the air pump operating during the first part of warm-up.
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06-14-2016, 01:53 PM	#13
Edward Colonel 377 Rep 2,982 Posts Drives: 2013.9999 E92 Jerez ZCP Join Date: May 2010 Location: Los Angeles iTrader: (2)	I have the Akrapovic Evo system with Delete-R so I have no ability to code out the cold war sequence. I don't care though because it is a familiar and audible reminder to me that the car is cold and I personally really like that it's rough and loud and my first few shifts sound epic because of it. Downside is that my gf can hear my car through two floors when I come home and when I leave. I'm sure people don't like how loud it can be.
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08-10-2017, 04:03 AM	#16
BPMSport BimmerPost Supporting Vendor 3387 Rep 7,542 Posts Drives: Harrop M3 / F10 M5 / F82 M4 Join Date: Apr 2008 Location: SoCal iTrader: (9) Garage List 2000 BMW M5 [0.00] 1990 BMW 735i Turbo [0.00] 2008 BMW M3 [7.50] 2015 BMW M3 [0.00] 2015 BMW M5 [0.00]	Carly will likely never be able to change cold start as this is a tuning change, which requires the checksum to be calculated and then flashed back, as well as patches. It's far from a simple coding option. You could pull the secondary air fuse (there is one 40amp and two 15 amp IIRC) and this would kill the noise, but would cause an SES light. __________________ -----\| Like us on Facebook \| Instagram \|\| Tuning Information \| Remote Coding \|----- ----Visit us at www.BPMSport.com - Emotion. Driven. \| Toll Free: (888) 557-5133----
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08-10-2017, 04:25 AM	#17
XIX Incognito 119 Rep 566 Posts Drives: 2011 e93 M3 Harrop S/C Join Date: Jan 2015 Location: Perth - Aus iTrader: (0)	Is the secondary air pump used for anything else ? Could be a good weight saving to ditch it if not ?
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08-10-2017, 04:48 AM	#18
EnVe46 Major 1038 Rep 1,216 Posts Drives: 11 E90 M3 LeMansBlue Join Date: Nov 2011 Location: Fort Lauderdale, Fl iTrader: (1)	I've debated deleting cold start since I'm moving to south Florida because it's the only time my car is suspiciously sounding or has any tick on start up. __________________ 2011.5 E90 M3 LeMans Blue
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08-10-2017, 01:40 PM	#22
Tylenol Jones Private 21 Rep 52 Posts Drives: 2013 E92 Join Date: Aug 2015 Location: Western PA iTrader: (1)	I recall a thread on here where some people who installed superchargers were getting all sorts of odd issues and engine/ecu problems. Forget the technical details but it turned out deleting the cold start routine had caused the trouble. Not necessarily relevant info but worth noting. Personally I don't mind the noise but I dont have to worry about neighbors.
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