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This write up is just an alternative method for people who find putting the vehicle in open loop to be a huge pain in the ass.
In this scenario, the car will stay in closed loop at all times. This makes for a very quick and easy way to get your MAF tuning done without the hassle of going to open loop. I would also like to add, this only works with COT and piston protection turned off. (Whichshould be off anyways)
First off, were going to need 2 new histograms. One for your basic cruising and what not, and the other for WOT (fully based off wideband settings) So you will need a wideband for this process. If you dont have one yet.....Shame on you.
Anyways, this is the Histogram we use for cruising maf tuning. Its basically a heavily filtered cruising histo. Nothing out of the ordinary. This will be the plot string, if you have trouble seeing it in the picture I provided.
[SENS.121] > 14.0 AND [SENS.121] < 14.9
Pretty much, any AFR above 14.9 will be accounted for, and below 14.0 will be accounted for as well. You can make the cruising MAF tighter by adjusting the AFRs I provided, But this seems to be a good medium. I have minimum hits to at least 20, to avoid any random spikes. Adjust that to your preference.
The cruising histo.
![]()
NOTE *If you want to tune VE simply change the to table to Primary VE vs RPM vs MAP*
The WOT histo is another basic, filtered histogram. When AFRs hit below 14.0 it will start collecting data. This of course is preference based, and can be changed to whatever you desire. I suggest keeping it about .5 higher then what your trying to filter out. (example 11.8, have it set to at least 12.3)
This is the filter string, [SENS.121] <14.0. I have minimum hits to at least 5, to filter out any garbage.
The WOT MAF histo.
![]()
NOTE *If you want to tune VE simply change the to table to Primary VE vs RPM vs MAP*
How to use
Your going to have 2 tables now worth of data. One for cruising and the other for...**** it just watch the damn video. Youll figure it out.
Tuning :: ****.mp4 video by Shaunmcdee - Photobucket
There you have it, quick alternative to getting your MAF tuning done quickly.
It will easily cut down your WOT tuning by over half, and as always cruising and idle will be lovely.
Enjoy
In this scenario, the car will stay in closed loop at all times. This makes for a very quick and easy way to get your MAF tuning done without the hassle of going to open loop. I would also like to add, this only works with COT and piston protection turned off. (Whichshould be off anyways)
First off, were going to need 2 new histograms. One for your basic cruising and what not, and the other for WOT (fully based off wideband settings) So you will need a wideband for this process. If you dont have one yet.....Shame on you.
Anyways, this is the Histogram we use for cruising maf tuning. Its basically a heavily filtered cruising histo. Nothing out of the ordinary. This will be the plot string, if you have trouble seeing it in the picture I provided.
[SENS.121] > 14.0 AND [SENS.121] < 14.9
Pretty much, any AFR above 14.9 will be accounted for, and below 14.0 will be accounted for as well. You can make the cruising MAF tighter by adjusting the AFRs I provided, But this seems to be a good medium. I have minimum hits to at least 20, to avoid any random spikes. Adjust that to your preference.
The cruising histo.
NOTE *If you want to tune VE simply change the to table to Primary VE vs RPM vs MAP*
The WOT histo is another basic, filtered histogram. When AFRs hit below 14.0 it will start collecting data. This of course is preference based, and can be changed to whatever you desire. I suggest keeping it about .5 higher then what your trying to filter out. (example 11.8, have it set to at least 12.3)
This is the filter string, [SENS.121] <14.0. I have minimum hits to at least 5, to filter out any garbage.
The WOT MAF histo.
NOTE *If you want to tune VE simply change the to table to Primary VE vs RPM vs MAP*
How to use
Your going to have 2 tables now worth of data. One for cruising and the other for...**** it just watch the damn video. Youll figure it out.
Tuning :: ****.mp4 video by Shaunmcdee - Photobucket
There you have it, quick alternative to getting your MAF tuning done quickly.
It will easily cut down your WOT tuning by over half, and as always cruising and idle will be lovely.
Enjoy
