Notices
Evo Engine / Turbo / Drivetrain Everything from engine management to the best clutch and flywheel.

a/f ratio

Thread Tools
 
Search this Thread
 
Old May 5, 2008 | 04:42 PM
  #1  
DESERTEAGLE50's Avatar
Thread Starter
Evolving Member
iTrader: (1)
 
Joined: Apr 2007
Posts: 165
Likes: 0
From: FLORIDA spring hill,
a/f ratio

what should be the ideal a/f for my setup ?
Reply
Old May 5, 2008 | 05:17 PM
  #2  
holler mcdollar's Avatar
Evolved Member
iTrader: (4)
 
Joined: Jun 2007
Posts: 522
Likes: 0
From: ne phila
why? do you think you're running too rich? what are you reading right now?
Reply
Old May 5, 2008 | 05:19 PM
  #3  
DESERTEAGLE50's Avatar
Thread Starter
Evolving Member
iTrader: (1)
 
Joined: Apr 2007
Posts: 165
Likes: 0
From: FLORIDA spring hill,
10.1 to 10.5
Reply
Old May 5, 2008 | 08:38 PM
  #4  
4TUN8's Avatar
Evolved Member
iTrader: (18)
 
Joined: Jan 2005
Posts: 2,458
Likes: 1
WAY TOO RICH.

You should see something over 11s after peak boost, and it should be somewhere in the 12s ramping up to boost.
Reply
Old May 5, 2008 | 08:52 PM
  #5  
recompile's Avatar
Evolved Member
iTrader: (38)
 
Joined: Nov 2006
Posts: 1,745
Likes: 10
From: New Hampshire, USA
With the AquaMist kit you have, you should be able to safely run high 11 AFRs, with plenty of boost and plenty of timing.

Let me know if you'd like to start tuning that beast!
Reply
Old May 5, 2008 | 08:55 PM
  #6  
srtboostin22's Avatar
Evolving Member
iTrader: (7)
 
Joined: Apr 2008
Posts: 258
Likes: 0
From: Baltimore, MD
i know in the srt world we tune anywhere between a 11.8 and a 12.2 evos on the other hand i heard you should be running a little richer.. so i would say a 11.5 or so
Reply
Old Jul 30, 2008 | 07:06 PM
  #7  
EvoJoeIX's Avatar
Evolved Member
iTrader: (16)
 
Joined: Apr 2007
Posts: 3,574
Likes: 2
From: Maryland
im at about 11.6. thats where you wanna be

if your in the 10's, you are either untuned or might as well be untuned. thats WAYYYY to rich. i bet you get horrible gas milage too
Reply
Old Jul 30, 2008 | 07:10 PM
  #8  
nothere's Avatar
Evolved Member
iTrader: (23)
 
Joined: Jan 2004
Posts: 2,680
Likes: 1
From: Bellevue. WA
I didn't see the aquamist, but you can run mid 12s easy with h2o.
Reply
Old Jul 30, 2008 | 07:58 PM
  #9  
psphinx81's Avatar
Evolved Member
iTrader: (38)
 
Joined: Apr 2005
Posts: 1,597
Likes: 2
From: Buffalo, NY
im running 12.0-12.2 afrs on my setup

i run 100 octane all the time though
Reply
Old Jul 30, 2008 | 08:11 PM
  #10  
MitsuJDM's Avatar
Evolved Member
iTrader: (6)
 
Joined: Mar 2005
Posts: 2,427
Likes: 0
From: Harrisburg, PA
I just looked at my dyno sheet. I'm right at 11.5 through most of the pull.
Reply
Old Jul 31, 2008 | 01:14 PM
  #11  
AhmadHasib's Avatar
Evolving Member
 
Joined: Feb 2006
Posts: 317
Likes: 0
From: Sugar Land, Tx
IX at 11.5-11.8 from 3,000-7,000 RPM

Can someone also confirm if this is okay
Reply
Old Jul 31, 2008 | 01:27 PM
  #12  
TeStUdO's Avatar
Evolved Member
iTrader: (6)
 
Joined: Jun 2005
Posts: 1,986
Likes: 41
From: Secret Tweaker Pad
Originally Posted by AhmadHasib
IX at 11.5-11.8 from 3,000-7,000 RPM

Can someone also confirm if this is okay
93 + Alky=OK
93 alone=Too lean

It should taper from 11.5
Reply
Old Aug 1, 2008 | 07:23 PM
  #13  
AhmadHasib's Avatar
Evolving Member
 
Joined: Feb 2006
Posts: 317
Likes: 0
From: Sugar Land, Tx
Originally Posted by TeStUdO
93 + Alky=OK
93 alone=Too lean

It should taper from 11.5

uh oh.
Reply
Old Aug 1, 2008 | 07:36 PM
  #14  
M3EvoBR's Avatar
Evolving Member
 
Joined: Feb 2008
Posts: 174
Likes: 0
From: FLORIDA
I run .78 labda on 98 oct. Ron (our 98 has 24% of ethanol on it)
Reply
Old Aug 1, 2008 | 10:17 PM
  #15  
hokiruu's Avatar
Evolved Member
iTrader: (19)
 
Joined: Apr 2006
Posts: 2,004
Likes: 2
From: Truckee, CA
10.5 is pig rich
you should be at about 14.5 idle, then very quickly dropping to 12.X under load, then 11.4ish through boost to redline. that's a little rich, but still makes good power and is safe, assuming your timing is good too
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
aftershock141
Evo X Engine / Turbo / Drivetrain
5
Jul 27, 2011 04:11 PM
5LEEPERISAH23I
ECU Flash
13
Jun 17, 2010 05:16 PM
Tpayne84
Evo Engine / Turbo / Drivetrain
15
Nov 2, 2007 12:33 AM
1 WICKED EVO
Evo Engine / Turbo / Drivetrain
5
Oct 14, 2007 09:41 AM
blackonblackevo
Evo Engine / Turbo / Drivetrain
7
Jun 6, 2007 11:55 AM




All times are GMT -7. The time now is 02:44 PM.