Cold Start help

Discussion pertaining to positive pressure E28s.
Post Reply
BATESY
Posts: 428
Joined: Jul 06, 2008 8:42 PM
Location: Renton, WA

Cold Start help

Post by BATESY »

I was wondering if someone could post up there cold start wizard table for me. I cant seem to get my cold start right and still have to kinda hold the gas pedal for a sec. I have a idle bump valve but a good table would help me out a bunch. thanks

BATES
Shadow
Posts: 951
Joined: Dec 28, 2008 10:03 PM
Location: USA

Post by Shadow »

Are you using any ASE?
BATESY
Posts: 428
Joined: Jul 06, 2008 8:42 PM
Location: Renton, WA

Post by BATESY »

english, I dont speak robot.
Shadow
Posts: 951
Joined: Dec 28, 2008 10:03 PM
Location: USA

Post by Shadow »

Natural selection is a bitch!!
BATESY
Posts: 428
Joined: Jul 06, 2008 8:42 PM
Location: Renton, WA

Post by BATESY »

it is indeed but your not helping that.
marc79euro645
Posts: 513
Joined: Dec 08, 2008 11:33 PM

Post by marc79euro645 »

Batesy,
I don't know if these will work for you.
on warm up enrichment from top to bottom
150,150,150,150,150,118,115,110,100
prime pulse 7.0
@-40=6.0
@160=6.0
flood clear= 70.0
additive%=55
# of cycles=950
good luck
marc
turbodan
Posts: 9217
Joined: Jan 09, 2007 10:19 PM

Post by turbodan »

marc79euro645 wrote:Batesy,
I don't know if these will work for you.
on warm up enrichment from top to bottom
150,150,150,150,150,118,115,110,100
prime pulse 7.0
@-40=6.0
@160=6.0
flood clear= 70.0
additive%=55
# of cycles=950
good luck
marc
I'd disable that priming pulse. Every time you cycle the ignition you're getting 7ms of fuel injected. If you get the cranking pulse widths dialed in you don't need anything else to get it to light up. Once its running ASE and WUE kick in.

WUE should be more or less linear with more fuel required for colder running. I'm not sure if I understand the data you posted correctly but it looks like it takes pretty big steps down. It works best when ramped down gradually, like the other enrichments.
BATESY
Posts: 428
Joined: Jul 06, 2008 8:42 PM
Location: Renton, WA

Post by BATESY »

marc79euro645 wrote:Batesy,
I don't know if these will work for you.
on warm up enrichment from top to bottom
150,150,150,150,150,118,115,110,100
prime pulse 7.0
@-40=6.0
@160=6.0
flood clear= 70.0
additive%=55
# of cycles=950
good luck
marc
thanks guys. Ill try that out
BATESY
Posts: 428
Joined: Jul 06, 2008 8:42 PM
Location: Renton, WA

Post by BATESY »

Image

I cant to figure out today where those number go compared to mine. Im running tunerstudio latest.thanks for the help. btw thats all my cranking tables.
marc79euro645
Posts: 513
Joined: Dec 08, 2008 11:33 PM

Post by marc79euro645 »

Mine seems to like the prime pulse.
I also have my timing starts at 10* @ 100kpa,
peak up to 25*@ 70 kpa
then drops to 20* for idle.
This starts fast & gives a nice little rev,before it settles to idle.
marc
marc79euro645
Posts: 513
Joined: Dec 08, 2008 11:33 PM

Post by marc79euro645 »

Batesy,
I'm using megatune,v2.687 firmware, so it looks different than tunerstudio w later firmware.
the first list of #'s represent ase %(lower right on your screen.
I live in Florida so I haven't tuned below 40F.
prime pulse is on the left
marc
BATESY
Posts: 428
Joined: Jul 06, 2008 8:42 PM
Location: Renton, WA

Post by BATESY »

Image

here the changes I made. see what you think before I run it. I cant seem to find additive% or #of cycles part or timing you were talking about.
Scottinva
Posts: 3663
Joined: Dec 07, 2008 7:32 PM
Location: Norfolk, Virginia

Post by Scottinva »

You guys can't compare warmup enrichment numbers unless the version you are using is the same. Why in the world don't you have ASE turned on?
turbodan
Posts: 9217
Joined: Jan 09, 2007 10:19 PM

Post by turbodan »

WUE percentages can probably be used but other settings may or may not apply. The problem is that other settings affect warm up and cold start running so without implementing everything it may not work very well at all.
BATESY
Posts: 428
Joined: Jul 06, 2008 8:42 PM
Location: Renton, WA

Post by BATESY »

Scottinva wrote:You guys can't compare warmup enrichment numbers unless the version you are using is the same. Why in the world don't you have ASE turned on?
I turn off ase due to a problem I was having, never turned it back on.

What is the different between ASE and Warm up wizard on tunerstudio, seems it doing the same thing anyway.
marc79euro645
Posts: 513
Joined: Dec 08, 2008 11:33 PM

Post by marc79euro645 »

Watch your vr pulse on the left megasquirt led. If your car is cold or battery low,or cables dirty, low cranking rpm for any reason,will cause you not to get vr pulse. When my car is cold I might have to crank for a couple seconds to start getting pulse.
Looks like you got the ase %s right. but I'm sure you'll need to tune them for your conditions. I would datalog start up.
marc
Post Reply