$OD A/E Help

[BLG355]

I am trying to learn what I need to adjust to add more A/E to my truck. I'm running Tuner Pro RT. I was looking at the TPS% vs AE and MAP vs AE but those only have Msec to correct. Where would I need to look in order to add? I have been reading all over the place but yet to see what field to make these adjustments. Many thanks in advance.

R.S.

I've always adjusted TPS% VS AE. You can start by increasing all the values by 10-15% and see how that goes.

BLG

[PJG1173]

I hate tuning AE. always too much or not enough. just something you have to play with. I have found the multipliers vs temp make the biggest changes

[Rally Smith]

BLG, please help me understand how increasing the Msec adds more fuel? I'm not questioning you, I just want to have an idea on what I'm doing. To me it looks like it's just adding time the AE will be active.

Thanks,
RS

[BLG355]

BLG, please help me understand how increasing the Msec adds more fuel? I'm not questioning you, I just want to have an idea on what I'm doing. To me it looks like it's just adding time the AE will be active.

Thanks,
RS

I'm not 100% sure on this, as far as what it is actually effecting. I do know that a little bit goes a long way and it is easy to go past the sweet spot. Someone with a little more knowledge on it may chime in with a good answer.

BLG

[Rally Smith]

I am running headers with dual exhaust if that makes any difference...

[PJG1173]

BLG, please help me understand how increasing the Msec adds more fuel? I'm not questioning you, I just want to have an idea on what I'm doing. To me it looks like it's just adding time the AE will be active.

Thanks,
RS

The way I understand it is that Msec is added to the injector pulse width to compensate for fuel dropping out of suspension on manifold pressure changes. I use my wideband and the line graph monitor in tunerpro to adjust AE. I set the monitor to show my WBO2, TPS, map, and RPM. when I see a change in tps I look for how much it changed and when/if the AFR changed. in theory if AE is right you shouldn't see a change in AFR. if it is not right I look at when the AFR went too rich or lean. if the AFR spike coincides with the movement of the TPS then I adjust AE TPS. if the spike occurred just after the throttle movement I adjust MAP AE. as you can see below when the throttle changed (green) my AFR (red) went rich MSec's after the throttle opened so I adjusted MAP AE. this might not be the best way but it seems to work for me.

[Rally Smith]

PJG, thanks for the info. That helps me understand it a bit better.
I swear, tuning this thing has had to of cost me a mint in fuel from data logging.

[dave w]

PJG, thanks for the info. That helps me understand it a bit better.
I swear, tuning this thing has had to of cost me a mint in fuel from data logging.

It's a good thing you waited till this year to tune, last year the fuel prices were at least $1.00 more a gallon!

dave w

[Rally Smith]

Unfortunately Dave, I've been doing this for well over a year! Can't really do much when it's snowing and freezing out. I have to make up as much time as I can afford $ to in the nicer months.

[PJG1173]

PJG, thanks for the info. That helps me understand it a bit better.
I swear, tuning this thing has had to of cost me a mint in fuel from data logging.

at least you didn't do what I did last week... imagine my surprise when I stopped at a red light with the windows open and caught a whiff of race fuel, then realized I had been driving around all morning data logging on renegade 110 fuel. after changing the fuel pump the night before I grabbed to gas cans closest to the garage door. apparently I need to label my gas cans better...

[brian617]

at least you didn't do what I did last week... imagine my surprise when I stopped at a red light with the windows open and caught a whiff of race fuel, then realized I had been driving around all morning data logging on renegade 110 fuel. after changing the fuel pump the night before I grabbed to gas cans closest to the garage door. apparently I need to label my gas cans better...

Go ahead and add about 10* to that timing table.

[Rally Smith]

LOL

[PJG1173]

Go ahead and add about 10* to that timing table.

It is the expensive way of preventing KR