I agree 100%. If the injector data is correct then fueling should remain correct, IDC should just drop. It doesn't always work out perfect but in theory that is the way it should be.

 

Is this a mail order tune?

 

Wait, I thought you scaled for injectors with the MAF?

 

so how exactly do i get the "right" data in there if what i have is wrong?

 

What I mean is if you are seeing a -25% afr error (25% too rich) across the board, increase the IFR table by that same amount. Computer thinks injectors are bigger, so opens them for a shorter time.

 

This has to come from a known good source, mainly the company that makes the injectors or anyone who has flowed them to find the offsets and min pulse etc. Myself, I wont get injectors unless I know I can get good info on them. If I go any bigger i will just go low impedance. Getting High impedance injectors to pulse low enough at idle always proves to be a bitch from what I have seen.

 

Lol I was joking.

 

There is something wrong here. Be patient, and figure it out before you damage something. I would not want to get E85 in the oil due to over fueling.

If you have a good known injector with accurate values, even if they are the original ones, I would put them in. I would then get it running properly with those injectors and good values. As Atomic said before, your VE table should not change when switching injectors. If your VE is off, the injector values are off.

Have your injectors been flowed? Do you know your fuel pressure is correct?

I had problems with my injectors, and eventually figured them out. I had a well known tuner stumped on them, and he could not get my truck running for crap. The problem with large injectors are, they open too big, and the problem with small injectors are they open too small.

 

Just spent a half hour on the phone with Jon, I'm getting somewhere!

 

I've got the injector data on the 2000's