[97twinturbo]

I was looking for some info when I came upon this great guide for tuning piggy back fuel/ignition units like the MAP ECU. There is a lot of good info here, especially about how to use an OBDII scanner to look at the fuel trims to get your fueling right in closed loop. They also list a nice, cheap OBDII scanning adapter/program.

http://www.gadgetonline.com/U-Tune.pdf

 

[StokerSix]

I was looking for some info when I came upon this great guide for tuning piggy back fuel/ignition units like the MAP ECU. There is a lot of good info here, especially about how to use an OBDII scanner to look at the fuel trims to get your fueling right in closed loop. They also list a nice, cheap OBDII scanning adapter/program.

http://www.gadgetonline.com/U-Tune.pdf

Thanks! Haven't looked at it yet, but I need some help.

I have a T78 6sp with 720s and the PHR map doesn't work for shit.

 

[Hua]

Thanks! Haven't looked at it yet, but I need some help.

I have a T78 6sp with 720s and the PHR map doesn't work for shit.

Please elaborate, I was thinking about ordering one today from Obiwan.

 

[SoarerTT]

yeah whats wong with the map ecu? thats what i plan to run also.

 

[StokerSix]

The MAP ECU is probably fine, it is the Supra base fuel maps for the various injector sizes I was refering to.

They have some maps they recommend using so you don't have to use auto-learn. I used the map for 720cc injectors and my AFR is all over the place and the car needs to be re-tuned almost completely.