Let's see your fully tuned timing maps
Evolved Member
Joined: Mar 2004
Posts: 1,635
Likes: 3
From: Butt**** Nowhere
Who runs 12.0 afrs up top on pump? Are these glory pulls?
Please don't attempt running experimentally lean AFR's if you are reading this and are just starting to learn how to tune your own car.
Please don't attempt running experimentally lean AFR's if you are reading this and are just starting to learn how to tune your own car.
What kind of fuel do you run? It's definitely a bit messy...Could use a good bit of smoothing...It shouldn't be aggressive like that then drop 3-4 degrees in the last column...
Last edited by 06MREvo; Jun 24, 2011 at 11:07 AM.
USA (AKI/PON) = Europe (RON)
Regular........... 87 = 91
Plus................ 89 = 93
Premium......... 91 = 95
Premium Plus... 93 = 98
Evolving Member
Joined: Oct 2008
Posts: 286
Likes: 1
From: Poland, Katowice
Last edited by TJung; Jun 24, 2011 at 12:13 PM.
In America, its called "AKI" or "anti knock index", which to calculate, takes the sum of the RON and MON of that gas, and divides them by 2, to get AKI. (R+M)/2
Most all other countries rate the octane of their gas by using only the RON number.
Therefore a gas with a RON of 98, has an AKI of about 93-94.
razorlab is right. There are multiple methods of measuring octane.
In America, its called "AKI" or "anti knock index", which to calculate, takes the sum of the RON and MON of that gas, and divides them by 2, to get AKI. (R+M)/2
Most all other countries rate the octane of their gas by using only the RON number.
Therefore a gas with a RON of 98, has an AKI of about 93-94.
In America, its called "AKI" or "anti knock index", which to calculate, takes the sum of the RON and MON of that gas, and divides them by 2, to get AKI. (R+M)/2
Most all other countries rate the octane of their gas by using only the RON number.
Therefore a gas with a RON of 98, has an AKI of about 93-94.
Newbie
Joined: Feb 2010
Posts: 2
Likes: 0
From: Neenah, WI
Hey guys, I'm new to tuning Evo's, I come from the Subaru world of ECU flash 
A friend has asked me to help him tune his Evo, and after taking a ride with him and seeing his UEGO show 12.3-12.7 through a pull at 27 psi. I am a bit hesitant to even touch the car because I dont know how it hasn't blown up yet...
Anyways, when you guys are referring running 12 degrees at redline, is that total timing, or is that just advance?
In the subaru world its normal to use 19 degrees total timing at peak torque to hit MBT (on E85) and up to 29 by redline.
What kind of total timing do you guys typically see on 93 octane and E85???
Sorry to threadjack, I just figured a timing thread was a good place to post.
A friend has asked me to help him tune his Evo, and after taking a ride with him and seeing his UEGO show 12.3-12.7 through a pull at 27 psi. I am a bit hesitant to even touch the car because I dont know how it hasn't blown up yet...
Anyways, when you guys are referring running 12 degrees at redline, is that total timing, or is that just advance?
In the subaru world its normal to use 19 degrees total timing at peak torque to hit MBT (on E85) and up to 29 by redline.
What kind of total timing do you guys typically see on 93 octane and E85???
Sorry to threadjack, I just figured a timing thread was a good place to post.
Anyways, when you guys are referring running 12 degrees at redline, is that total timing, or is that just advance?
In the subaru world its normal to use 19 degrees total timing at peak torque to hit MBT (on E85) and up to 29 by redline.
What kind of total timing do you guys typically see on 93 octane and E85???
Sorry to threadjack, I just figured a timing thread was a good place to post.
In the subaru world its normal to use 19 degrees total timing at peak torque to hit MBT (on E85) and up to 29 by redline.
What kind of total timing do you guys typically see on 93 octane and E85???
Sorry to threadjack, I just figured a timing thread was a good place to post.
If you tune it like a subaru, you will blow it up.
When we say X degrees at redline, that's what the car is logging in evoscan. It's also what should be in the timing map at the relevant RPM/load, supposing there isn't any knock to bring down the timing.
For your friend's car, start by making the map richer by ~1 AFR above 200 load and go from there. To keep things smooth I would recommend richening by .1 from 200 and up, then another .1 from 190 and up and so on until you reach 100 load. If you have 20-load increments between 100 and 200 load then increment by .2 instead of .1. This will avoid sudden changes in the fuel map and get the fueling to a more reasonable level.
For your friend's car, start by making the map richer by ~1 AFR above 200 load and go from there. To keep things smooth I would recommend richening by .1 from 200 and up, then another .1 from 190 and up and so on until you reach 100 load. If you have 20-load increments between 100 and 200 load then increment by .2 instead of .1. This will avoid sudden changes in the fuel map and get the fueling to a more reasonable level.
Newbie
Joined: Feb 2010
Posts: 2
Likes: 0
From: Neenah, WI
Since we're on the subject of tuning differences I have a couple more questions:
1. What units are used in the timing table? Does 200 mean 200% volumetric efficiency?
2. When using the ECU to control boost, can you control the maximum wastegate duty cycles like a Subaru so that I can use a 3 port solenoid and MBC together to tune boost?
Ok, thats kind of what I figured after reading through a bunch of posts. Thanks for the quick reply!
Since we're on the subject of tuning differences I have a couple more questions:
1. What units are used in the timing table? Does 200 mean 200% volumetric efficiency?
2. When using the ECU to control boost, can you control the maximum wastegate duty cycles like a Subaru so that I can use a 3 port solenoid and MBC together to tune boost?
Since we're on the subject of tuning differences I have a couple more questions:
1. What units are used in the timing table? Does 200 mean 200% volumetric efficiency?
2. When using the ECU to control boost, can you control the maximum wastegate duty cycles like a Subaru so that I can use a 3 port solenoid and MBC together to tune boost?
Timing table is RPM x Load