Switching over to E85 Holley EFI - Yellow Bullet Forums

Go Back   Yellow Bullet Forums > Technical Section > Electrical - Hyperaktive Performance Solutions

Electrical - Hyperaktive Performance Solutions

Reply
 
Thread Tools Display Modes
Old 07-17-2013, 08:04 PM   #1
samdogmx
Junior Member
Spooled up
 
samdogmx's Avatar
 
Join Date: Dec 2007
Location: Alton IL
Posts: 242
Default Switching over to E85 Holley EFI

I'm pretty sure I know what all needs to be changed but just want to double check, with Holley efi system currently running on 93 to switch over to E85 I need to

1 - add 35% to base fuel table
2 - add 35% to AE vs TPS rate of change and AE vs MAP rate of change
3 - add 35% to Cranking fuel
4 - change target afrs to 10.8 - 11ish under boost


Is that all?
what is a acceptable afr for idle? 12.5-13?
__________________
SAM
Daily Driver - 2007 Silverado 2500HD duramax - 13.90

Drag car - 1979 Camaro LS1 T56 swap 10.43 @ 129 stock internals + 100shot - old combo

New combo - Forged 370 PT88 & Th400 -
9.01 @ 147 on E85

Changing it up again for next year
samdogmx is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-17-2013, 08:58 PM   #2
turbo6man
Junior Member
Spooled up
 
Join Date: Feb 2010
Location: Loomis CA
Posts: 240
Default Re: Switching over to E85 Holley EFI

I started running my car with E85 so I cannot answer the setup questions. But I can tell you I target 10.8 AFR using the gas scale at WOT. I had problems with the plugs misfiring at an idle with them in the 12.8 to 13.2 AFR range. I idle at 14.0 to 14.3 now and have not had any idle misfiring issues.
__________________
1963 chevyII: lq4 with eagle crank callies rods wiseco pistons Holley HP with 160lb inj 1/2" fuel line(3/8's return) with Magnafuel 750 pump E85 PT88 turbo Liquid intercooler 5" downpipe with 4" exh. Four bar rear suspension with coil overs and ford 9" with 3.25 gear ratio and mini tub with 28X10.50-15 slicks Checkered racing front clip with QA1 coilovers. best time 9.21@148MPH with 24psi boost and 1.42 60'
turbo6man is offline   Reply With Quote
Old 07-18-2013, 03:51 PM   #3
69TA
Junior Member
Spooled up
 
69TA's Avatar
 
Join Date: Jan 2009
Posts: 103
Default Re: Switching over to E85 Holley EFI

Quote:
Originally Posted by samdogmx View Post
I'm pretty sure I know what all needs to be changed but just want to double check, with Holley efi system currently running on 93 to switch over to E85 I need to

1 - add 35% to base fuel table
2 - add 35% to AE vs TPS rate of change and AE vs MAP rate of change
3 - add 35% to Cranking fuel
4 - change target afrs to 10.8 - 11ish under boost


Is that all?
what is a acceptable afr for idle? 12.5-13?
NO. You DO NOT need to add anything to any table - only exception maybe crank fuel.
You should simply let closed loop and LEARN do the adjustments necessary to the fuel map. Every engine is different. Som like 15% some like 30% more volume than gas.
10.8-11ish under boost seems awefully rich to me. I would start with 11.5 and go from there.
Idle around 14.0 or as lean as your engine likes. A lean idle can never hurt an Engine.
69TA is offline   Reply With Quote
Old 07-18-2013, 04:30 PM   #4
turbo6man
Junior Member
Spooled up
 
Join Date: Feb 2010
Location: Loomis CA
Posts: 240
Default Re: Switching over to E85 Holley EFI

Quote:
Originally Posted by 69TA View Post
NO. You DO NOT need to add anything to any table - only exception maybe crank fuel.
You should simply let closed loop and LEARN do the adjustments necessary to the fuel map. Every engine is different. Som like 15% some like 30% more volume than gas.
10.8-11ish under boost seems awefully rich to me. I would start with 11.5 and go from there.
Idle around 14.0 or as lean as your engine likes. A lean idle can never hurt an Engine.
My opinion would be to add the 30% Fuel to the map(above idle), If it is too rich you can let the closed loop learn subtract fuel. Alot of people have said you can make more power at 11.5 but my experience has been that reliable power can be made at 10.8 AFR(Gas scale on E85). I ran a Buick v6 @ 24 to 30psi boost for two years with alot of track passes and stock LQ4 at 15psi and now the built lq4 at 19psi. All with a target of 10.8 and have never hurt any of them. I would say that you are correct and I am probably to rich and leaving some more power on the table if I was to lean it out. The true answer I believe would be for me to get my tune rock solid at 10.8 then start reading the plugs and leaning it out till it runs the best because every motor likes afr alittle different but 10.8 has worked Very reliably for me and ran et's to my expectations.
__________________
1963 chevyII: lq4 with eagle crank callies rods wiseco pistons Holley HP with 160lb inj 1/2" fuel line(3/8's return) with Magnafuel 750 pump E85 PT88 turbo Liquid intercooler 5" downpipe with 4" exh. Four bar rear suspension with coil overs and ford 9" with 3.25 gear ratio and mini tub with 28X10.50-15 slicks Checkered racing front clip with QA1 coilovers. best time 9.21@148MPH with 24psi boost and 1.42 60'
turbo6man is offline   Reply With Quote
Old 07-18-2013, 04:34 PM   #5
Danny Cabral
Senior Member
Smoked another BBC
 
Danny Cabral's Avatar
 
Join Date: Jan 2010
Location: Ellington, CT
Posts: 1,447
Default Re: Switching over to E85 Holley EFI

Holley EFI & E85:
http://www.yellowbullet.com/forum/sh...85&postcount=2

http://www.yellowbullet.com/forum/sh...d.php?t=480023
__________________
May God's Grace Bless You

'78 BRONCO: 508" stroker, TFS heads, Dominator MPFI & DIS, A/C, Lentech Strip Terminator AOD, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, 4" lift, 35" tires
Danny Cabral is offline   Reply With Quote
Old 07-19-2013, 05:31 AM   #6
Brillko
Member
Pullin gears
 
Join Date: Feb 2013
Location: Sweden
Posts: 616
Default Re: Switching over to E85 Holley EFI

Change target AFR and your fuel mao will Change. Start out with a Little more CL / Learn and be nice to it. For Cold starts i usually add up to 400% more fuel but subracts it almost imediatly. E85 fires on the pump fuel in it when its Cold.
__________________
http://www.brillko.com
Brillko Engineering
Brillko is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -4. The time now is 11:40 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Resources saved on this page: MySQL 4.26%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Yellow Bullet LLC