MAF-T tuning.

[Talon628]

My setup: 60-1 t3/t4/full exhaust.,walbro 255, AFPR 1000, PTE 680cc injectors, MAFT gen1 w/3" GM mas.

So yesterday I put in My boost gauge,water temp,and wide band o2. I went to go try, and lets say make sure i can drive it(tune). so I got it pretty good just by watching the wide band,(no I dont have a data logger cuz my obd 2 plug is broken on the car)and got it to idle stoich/rich, then got it to run the same at WOT. But the question I have is,can I adjust it for partial throttle? Because like when im only a little on the gas it will stay almost lean, only until I stomp the gas will it begin to richen out. Or if that is normal....Because I noticed the turbo would spool at partial and yet it still reads lean, and then when floored it'll read rich.

That and also, when I keep it in gear, but let off the gas it leans out? normal or odd?

[b00stcreep21]

Never tuned a MAF-T, so I can't answer most of your questions. But the leaning out when you let off the gas is normal. When you let off the gas, and the engine isn't at idle, it shuts the injectors off

[Talon628]

ok so that helped a little..damn any one else.. need to figure this out.

[Shane@DBPerformance]

Fix your OBD2 plug.

[Talon628]

great that was awsome advicelol, If you know exactly how to fix it you should send me a illistrated DIY directional guide. That would be nice, thank you. Other wise if anyone else on here has tryed this gimmie some input.

[Andrew7dg]

Besides the MAF-T box do you have any other thing tuning the car?

The box works pretty well but there are better tuning methods and you have the wide band so thats a good start.
The thing I don't like about the box is that there are only 3 knobs
Idle
Mid throttle
WOT

IMO that is not enough to tune a car properly (make it run, yes but provide a good consistant tune, no)

I would look into something to tune with the box

An S-AFC II
DSMlink
MegaSquirt

Looking at your setup it is time to take it up a notch on tuning

[niterydr]

Originally Posted by Andrew7dg

Besides the MAF-T box do you have any other thing tuning the car?

The box works pretty well but there are better tuning methods and you have the wide band so thats a good start.
The thing I don't like about the box is that there are only 3 knobs
Idle
Mid throttle
WOT

IMO that is not enough to tune a car properly (make it run, yet but provide a good consistant tune no)

I would look into something to tune with the box

An S-AFC II
DSMlink
MegaSquirt

Looking at your setup it is time to take it up a notch on tuning

A simple wire tap to the CAS and you can then tune via RPM as well.

[xveganxcowboyx]

Also, it's actually just:
Low
Mid
High
or however they break it down. They high on the basic air flow tuning doesn't necessarily mean WOT. It applies to any time you reach a certain point in airflow (800hz maybe???).

You should be able to tune for these three ranges, and then as Nite said do a different tune based on RPM which kicks in at WOT.