Notices
Evo X Engine Management / Tuning Forums Discuss the major engine management systems.

Hot start fix for the EVOX's.

Thread Tools
 
Search this Thread
 
Old Aug 7, 2010 | 07:11 AM
  #16  
HybridKOOP's Avatar
Evolving Member
iTrader: (3)
 
Joined: Apr 2008
Posts: 355
Likes: 0
From: Connecticut
I have DW1000's and always have a hot start issue. I've tried putting this table at all zeros to no avail.

I will try your numbers, but I doubt it will help me much. Once my car DOES start, it's obvious it was too rich in the chambers as I get a good plume of black smoke for a second.

Lou
Reply
Old Aug 7, 2010 | 08:26 AM
  #17  
Golden's Avatar
Evolved Member
iTrader: (1)
 
Joined: Nov 2009
Posts: 1,456
Likes: 0
From: Omaha, NE
Originally Posted by Clipse3GT
The formula to figure out how much you need to change... this is for regular fuel (93/91)

New Cranking primer IPW = old IPW x [ old injector scale / new injector scale]

for E85...

Although I am not 100% sure...

Is figure out the forumla same as above, since most likely you tuned latency and scaling on regular fuel then switched to E85. Then once those values are figured out... multiple the entire table by 0.3-0.35 or 35-35%. To have new numbers...
For E-85, you will want to simply use the math you have above with pump gas and leave it the same for E-85. If you don't know your pump injector scale, you could find some that are posted or do your .33% math.
Reply
Old Aug 7, 2010 | 11:07 PM
  #18  
GST Motorsports's Avatar
Account Disabled
iTrader: (8)
 
Joined: Sep 2007
Posts: 3,366
Likes: 1
From: Hayward
Originally Posted by Golden
For E-85, you will want to simply use the math you have above with pump gas and leave it the same for E-85. If you don't know your pump injector scale, you could find some that are posted or do your .33% math.
You will need a bit more IPW at cold temp starts for sure. Trust me.

The 10's seem to start up a bit better about starting up in colder temps with E85 then the Evo8/9 but they still require more IPW adder.

- Bryan
Reply
Old Aug 8, 2010 | 06:10 AM
  #19  
mlomker's Avatar
Evolved Member
iTrader: (1)
 
Joined: Aug 2009
Posts: 1,468
Likes: 0
From: Saint Paul
I definitely had warm start issues on ID2000's (E85). I was frustrated and just went back to DW1000's, which work perfectly for me. I'll have to give my tuner another shot at this table.
Reply
Old Aug 8, 2010 | 05:15 PM
  #20  
tephra's Avatar
EvoM Guru
15 Year Member
iTrader: (6)
 
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
dave I sent you an email - maybe it ended up in your spam folder :P eheh
Reply
Old Aug 8, 2010 | 05:57 PM
  #21  
David Buschur's Avatar
Thread Starter
Evolved Member
iTrader: (53)
 
Joined: Mar 2003
Posts: 14,622
Likes: 32
tephra, was it an actual email or PM? I didn't get one from you, please give it another shot:
davidbuschur@buschurracing.com

Thanks,
Reply
Old Aug 8, 2010 | 06:57 PM
  #22  
tephra's Avatar
EvoM Guru
15 Year Member
iTrader: (6)
 
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
email

i just resent it...
Reply
Old Aug 9, 2010 | 08:40 AM
  #23  
fostytou's Avatar
EvoM Community Team
iTrader: (15)
 
Joined: Sep 2006
Posts: 3,143
Likes: 7
From: Aurora, IL
Originally Posted by Clipse3GT
The formula to figure out how much you need to change... this is for regular fuel (93/91)

New Cranking primer IPW = old IPW x [ old injector scale / new injector scale]

for E85...

Although I am not 100% sure...

Is figure out the forumla same as above, since most likely you tuned latency and scaling on regular fuel then switched to E85. Then once those values are figured out... multiple the entire table by 0.3-0.35 or 35-35%. To have new numbers...
Originally Posted by Golden
For E-85, you will want to simply use the math you have above with pump gas and leave it the same for E-85. If you don't know your pump injector scale, you could find some that are posted or do your .33% math.
I'm pretty sure you would want to multiply by 1.33... e85 generally requires more fuel not less. (and this value does not work on "inverted" logic like injector scaling). In any case, for the injector scaling you want to subtract 30% or multiply by .7 .

I plan to actually try lowering the adder for my FIC 1100 on e85 in the 70-100* area... it doesn't take a really long time to start, but an extra crank or two from what I remember on pump when the car sits over night.
Reply
Old Aug 9, 2010 | 10:43 AM
  #24  
Clipse3GT's Avatar
Account Disabled
iTrader: (10)
 
Joined: Dec 2005
Posts: 2,185
Likes: 2
From: Cleveland, OH
Originally Posted by fostytou
I'm pretty sure you would want to multiply by 1.33... e85 generally requires more fuel not less. (and this value does not work on "inverted" logic like injector scaling). In any case, for the injector scaling you want to subtract 30% or multiply by .7 .

I plan to actually try lowering the adder for my FIC 1100 on e85 in the 70-100* area... it doesn't take a really long time to start, but an extra crank or two from what I remember on pump when the car sits over night.
yes, I updated the other forum and not this one. 1.30 or 1.35.
Reply
Old Aug 9, 2010 | 05:16 PM
  #25  
tephra's Avatar
EvoM Guru
15 Year Member
iTrader: (6)
 
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
basically it comes down to trial and error.

in the end, if your having cranking difficulties, this table is the one to look at (after you have ensured your trims are within +/- 5%
Reply
Old Aug 11, 2010 | 11:15 AM
  #26  
David Buschur's Avatar
Thread Starter
Evolved Member
iTrader: (53)
 
Joined: Mar 2003
Posts: 14,622
Likes: 32
CRAP! tephra I still didn't get it. Is this something you can send me in a PM here? If not will you try sending it to jarrod@buschurracing.com he can give it to me. He uses firefox or something and has less problems.

Sorry.
Reply
Old Aug 11, 2010 | 05:18 PM
  #27  
tephra's Avatar
EvoM Guru
15 Year Member
iTrader: (6)
 
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
lol - Dave i'm the clown asking about your stage3 short
Reply
Old Aug 11, 2010 | 06:23 PM
  #28  
David Buschur's Avatar
Thread Starter
Evolved Member
iTrader: (53)
 
Joined: Mar 2003
Posts: 14,622
Likes: 32
Wait, the big bore? Why didn't you say that in the e-mail if that is you?!!
Reply
Old Aug 11, 2010 | 07:05 PM
  #29  
tephra's Avatar
EvoM Guru
15 Year Member
iTrader: (6)
 
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
lol
Reply
Old Aug 14, 2010 | 08:19 PM
  #30  
boostin20's Avatar
Evolved Member
 
Joined: Dec 2008
Posts: 685
Likes: 0
From: MD
Sub'd
Reply



All times are GMT -7. The time now is 07:00 PM.