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Author Topic: starting revs  (Read 46516 times)
fknbrkn
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mk4 1.8T AUM


« on: January 18, 2014, 02:14:36 PM »

hello
my friend asking me can we change the starting revs to make a ~2000rpms right after engine started like a supercars do.. so im searching for that but cant find anything, any ideas?
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carsey
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« Reply #1 on: January 18, 2014, 05:31:49 PM »

From the S4 wiki:

Finally, if none of this works, you may have to increase your idle RPM and/or idle torque reserve (alters idle timing)

    NLLM - idle RPM
    NFSM - idle RPM while in gear
    KFMRES - idle torque reserve
    KFMRESK - idle torque reserve while transmission decoupled (clutch in)

If your car runs poorly while it is warming up (engine temps less than 85C-90C), you will want to tweak the warm up enrichment tables according to your STFTs:[12]

    KFFWL_0_A
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fknbrkn
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mk4 1.8T AUM


« Reply #2 on: January 18, 2014, 05:54:25 PM »

its hard to explain because english is not my native
i dont meaning idle speed
i means short period right after starting the engine and before it goes to idle speed

something like that
http://www.youtube.com/watch?v=D4LmyodPNGM
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dream3R
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« Reply #3 on: January 19, 2014, 04:16:37 AM »

Might be worth exploring **BBKHZ?
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How to work out values from an A2L Smiley

http://nefariousmotorsports.com/forum/index.php?topic=5525.msg52371#msg52371


Starting Rev's http://nefariousmotorsports.com/forum/index.php?topic=5397.msg51169#msg51169

noobs read this before asking http://nefariousmotorsports.com/forum/index.php?topic=9014.0title=


ORGORIGINAL 05 5120 creator for Volvo
ORIGINAL Datalogger (Freeware) Author
ORGINAL finder of the 'extra' torque' limits
I don't have ME7.01 A2L I just use ID
ABCD
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« Reply #4 on: January 19, 2014, 07:59:14 PM »

hello
my friend asking me can we change the starting revs to make a ~2000rpms right after engine started like a supercars do.. so im searching for that but cant find anything, any ideas?

Are you using a electronioc throttle body or mechanical one with idle air control valve?
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fknbrkn
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mk4 1.8T AUM


« Reply #5 on: January 20, 2014, 12:29:41 AM »

DBW
(awp 1.8t engine)
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ABCD
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« Reply #6 on: January 20, 2014, 12:57:51 AM »

DBW
(awp 1.8t engine)

I am sorry, do not understand what is DBW.
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fknbrkn
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mk4 1.8T AUM


« Reply #7 on: January 20, 2014, 01:23:24 AM »

sorry
its drive by wire
electronic throttle body
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ABCD
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« Reply #8 on: January 20, 2014, 01:26:28 AM »

sorry
its drive by wire
electronic throttle body

OK...I am not sure but maybe you have to lookup for ETC opening at start based on coolant temperature and altitude above sea level...
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NOTORIOUS VR
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« Reply #9 on: January 20, 2014, 01:19:53 PM »

its hard to explain because english is not my native
i dont meaning idle speed
i means short period right after starting the engine and before it goes to idle speed

something like that
http://www.youtube.com/watch?v=D4LmyodPNGM

Your car does this already.  Every car does this from the factory.

The Ferrari was cold... During cold starts the idle speed is raised, this is not reserved for supercars.
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SCHNELL ENGINEERING BLOG ·  STANDALONE ECUS · TUNING · DYNO · WIRING · PARTS · VEMS
Google Talk: NOTORIOUS.VR
n00bs start here: http://s4wiki.com/wiki/Tuning
fknbrkn
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mk4 1.8T AUM


« Reply #10 on: January 20, 2014, 05:47:20 PM »

my car does only 1200 rpms at cold winter start
and holds until warmup

but i need to starting with ~2000 and immediately drops it to idle (doesnt matter hot or cold)
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ratherb1
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« Reply #11 on: January 20, 2014, 06:16:47 PM »

I wouldn't go crazy high with the Rpms ....you know you have turbos probably not a good idea to go too crazy....I'd leave well enough alone
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-ROMIE
dream3R
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« Reply #12 on: January 21, 2014, 12:48:30 AM »

my car does only 1200 rpms at cold winter start
and holds until warmup

but i need to starting with ~2000 and immediately drops it to idle (doesnt matter hot or cold)

You can do that with *BBHKZ as I said earlier in this thread :-)

I went through the code a couple of weeks back and stopped my car idling at 1800 for a few secs on cold start.   It did it for cat warming but with a full exhaust it would wake the dead,  not very nice to my neighbours on early starts.
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How to work out values from an A2L Smiley

http://nefariousmotorsports.com/forum/index.php?topic=5525.msg52371#msg52371


Starting Rev's http://nefariousmotorsports.com/forum/index.php?topic=5397.msg51169#msg51169

noobs read this before asking http://nefariousmotorsports.com/forum/index.php?topic=9014.0title=


ORGORIGINAL 05 5120 creator for Volvo
ORIGINAL Datalogger (Freeware) Author
ORGINAL finder of the 'extra' torque' limits
I don't have ME7.01 A2L I just use ID
fknbrkn
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mk4 1.8T AUM


« Reply #13 on: January 21, 2014, 05:29:25 AM »

You can do that with *BBHKZ as I said earlier in this thread :-)

I went through the code a couple of weeks back and stopped my car idling at 1800 for a few secs on cold start.   It did it for cat warming but with a full exhaust it would wake the dead,  not very nice to my neighbours on early starts.

thanks, i dont thinking about it from that pov
going to rtfm  Smiley

ratherb1, yes i tell him about this first, but for some people those effects are much more important than a turbo life. his choice.. Roll Eyes
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tbm
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« Reply #14 on: January 23, 2014, 03:35:17 AM »

my car does only 1200 rpms at cold winter start
and holds until warmup

but i need to starting with ~2000 and immediately drops it to idle (doesnt matter hot or cold)
I think I understood what you want. In order to throw up rev after engine start (before entering in idle rev area) you should rise up KFMIRL in that area which you want to rise up env.
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