Ford injector data to GM format conversion spreadsheet

[DSteck]

I've been holding out on this for a while, but figured it's time to just let it out there. I've only mapped a few sets already, but left the green fields editable so that anybody can take any set of Ford data and enter it in to convert it to GM format. I actually had to delete a few sheets of pre-mapped injectors due to file size limits on the forum.

The methodology is fairly simple behind all of it. Beyond knowing how the two formats relate (and the algebra behind the conversion from Ford to GM format), I used linear regression to map the relationship according to the various GM table break points. For flow rate, I actually use power regression because it generates a much better fitting curve (I also generate coefficients for the relationship because Bernoulli's simplified square root formula just doesn't line up right).

I think I hit all the major table formats. If the one you need isn't listed, pound sand, because I'm not editing it. Lol.

Note: You will notice that data above and below certain voltages in the offset table may look goofy. When looking at the visual representation of the offset table, the data will actually curl up in the higher voltages. This is because the generated data is not extrapolated according to a typical trend, but rather follows the coefficients generated for the voltages from 6v to 15v.

[Kyne]

You are the man! I've seen you hinting at how to do it, thanks for sharing this with us. I would like to compare it to GB data now.

[DSteck]

You are the man! I've seen you hinting at how to do it, thanks for sharing this with us. I would like to compare it to GB data now.

It differs from his data for sure.

[Kyne]

I think that came out wrong, I meant compare not to see that they are different but how they differed.

[0352goat]

Thanks Dave, always helpful!

[07MontRedcp]

Do you happen to have a sheet for the SD 60. I have the GB CD and would like to compare.

Thanks,

BJK

[DSteck]

Go look up the Ford data and apply it. The forum limited me on file size, so I had to delete sheets.

[07MontRedcp]

Yeah, I used to have the ford data that racetronixs put on their site, but I dumped it when I got the GB DVD. Now I'm having trouble finding it on the net. I'll come across it sooner or later.
BTW, thanks for the spread sheet.

BJK

[07MontRedcp]

I don't know for sure if this is the data I need.

BJK

[HartRod]

I don't know for sure if this is the data I need.

BJK

Thats it. DSTECK thanks for posting the info. What improvments have you seen with this setup as compared to the Bannish data? Idle? Top end? Fuel economy? (I had to throw that one in, ).

[Pekka_Perkeles]

Thanks Dave again.

[HartRod]

Dave for the SD80's, would I still use 4.0 ms for the Short Pulse limit and 1.1 for the Min Injector pulse to go along with your spreadsheet? Thanks,

Rob

[DSteck]

You can make it low. Those injectors suck.

[HartRod]

LOL, I get it you don't like them, but I'm stuck with them for right now. Can you be more specific? Make which one low and how low? Here's the log and tune of where I am right now. I was just trying to fine tune the IFR with your data.

[DSteck]

You shouldn't be changing fuel flow rates to change your tune.

[HartRod]

You shouldn't be changing fuel flow rates to change your tune.

Damn Dave, all I asked was a simple question. I'm still finishing my tune and wanted to update my fuel injector data with your numbers. I feel your numbers are well thought out and will probably help my truck run better as I continue to fine tune my setup. I realize you probably get asked a lot of "stupid" or repeat questions, but if you aren't going to add any more to it that, why bother posting? I'm a member of about 5 different boards and probably answer 10 or more questions a day (most repeats), but I try to answer them all "graciously" because I know how hard it is to find information when you have a limited amount of time. Geesh, it's people like you that run people off of boards.....I know, I know you are widely respected on this board, but it's only because of your knowledge, NOT your bedside manner. Sad part is, you could add so much more to this board if you didn't feel like you have to act like a pr^&* all of the time...OK, I'm done ranting and I'll stay out of your threads and won't "bother" you any more.

EDIT: Read this, maybe you will learn something...http://www.hptuners.com/forum/showth...8-from-scratch

[DSteck]

Actually, I read your post as though you were trying to adjust fuel delivery by editing IFR instead of calibrating the MAF. That's why I posted what I did.

Don't like my posts? Don't read them. I will still sleep at night. Maybe I just shouldn't share the tools I create. I've handed out free tunes and done my share (and other people's share) of help. One guy tried to pay me, and I had him donate to the Make A Wish foundation instead. I didn't post my reply with intent to be rude. It's also not my problem if you're stuck with those injector. And you're right, I do constantly get asked questions to the point that I asked HPT to increase my PM limit, and I still have to clear it weekly. Many of those questions have already been answered on this forum and are born out of a person's lack of initiative to do a search or find it on their own.

The minimum pulse width is the lowest "controllable" limit. You can set it to whatever you want. If you don't set it low enough, you'll never lean out. Things like this have been answered on this forum before.

Read this, maybe you will learn something.
http://www.hptuners.com/forum/showth...l=1#post333562