RomRaider

These are two spreadsheets I use to help me scale my MAF. The original was created by Bad Noodle and posted on NASIOC. I've modified his OL MAF tool to better suit my needs (small formula change) and also created a version to help with CL MAF scaling.

The OL MAF Tool uses the AFR correction data from airboy's "Log file interpretation" spreadsheet and the CL MAF Tool uses AFR correction data from mickeyd2005's "Closed Loop MAF Table and Injectors" spreadsheet.

edit: permission was given by Bad Noodle to post these. Original NASIOC post http://forums.nasioc.com/forums/showthread.php?t=1714223

SEE POST BELOW (#7) FOR AN UPDATED OL MAF TOOL FROM BAD NOODLE!!!

excellent tool, great in combination with mickeyd2005 spreedsheet! I do have a question as i am not an excel wizz, how do i make the tool read up to 5V maf and scale, as i see 4.8v quite often and the tool only goes to 4.69v

cheers phil

I ran into this as well. Its an easy fix though.

Open the spreadsheet click tools> Macros> Macros
From there click on Afr_Mults and then click Edit
A new window should open showing VB commands
Go down to line 46 and look for the command "For i = 1 To 48" (the quotations are not part of the command!!!!!)
Change the 48 to 54, so it should look like "For i = 1 To 54"
Do the same on line 90 on the command "For j = 1 To 48"

This will make it calculate all the way across the Maf scaling.

Modify the spreadsheet at your own risk, i take no responsibility. This modification was not approved by the OP or by bad noodle

Has anyone had problems pasting the scaling into the maf table in romraider, its not letting me do it.

Make sure your user level is set to "highest" or "debug"

User level was and is always on debug... what an annoying problem.

To copy/paste back into Romraider, the MAF table header has to be offset by 1 cell and have [Table2D] added, like this:

I've been working with OL scaling V1 and found it lacking in some aspects so I wrote V2.

The major advantage is that is that is lets you smooth the maf curve manually. In my case, I like the results much better and find the worksheet much more useful.

Another update: version 2.1

I included better smoothing functions as well as a curve moving tool. It's been really helpful. Much more so than the other ones

Badnoodle, can you make another change to the OL MAF spreadsheet so that the "Data" tab has more "Run" columns - 9 would be great :p

I find 3 doesn't offer enough resolution (especially if you are limited to lower gear logs), and as such you need to do 3 runs, flash the changes, do another 3 runs, flash the changes and so on - whereas 9 runs will cut this down substantially.

Obviously it won't be useful for those who are just starting to tune OL MAF, but for those who have it at <3% and are trying to fine tune OL MAF to get it to <1%, the ability to use more "Run" data will be very beneficial.

If you can do this, it would be greatly appreciated.

Leslie

You give up on the Grp N ROM Leslie?

Sure can, while I work on that you can just tack on the extra runs to the bottom of your first 3 runs. Just take out the headers and extra spaces so it's one continuous data stream.

so it would look like:
run 1 run 2 run 3
1 2 3
4 5 6

then when you add extra data from runs 7, 8, 9 it would look like:
run 1 run 2 run 3
1 2 3
4 5 6
7 8 9
10 11 12


I agree that the more data you have the better the scaling ends up.

I had a few weird problems I couldn't correct which I think are related to IAT, so switched back to my last stable MAF tune until I get a separate IAT sensor mounted in my inlet manifold.


cool beans mate - tbh I didn't even think of just adding the data at the end of the first runs.

Leslie

Gotcha, tapping my manifold tonight and putting her back together, been sitting in the driveway for about 2 months now...

cool beans - did you end up using the grp n temp sensor or one from another model?

Leslie