2002 Tahoe Flex Fuel ECU 3 Bar MAP?

[nnicholas]

I currently have a 2002 Flex Fuel ECU OS:12216125. I would like to use a 3 bar map sensor however only 2 bar enhancement is available for this OS currently. Does anyone know a way around this? VE pressure scaling? MAP sensor scaling? I would like to retain the ability to use E85 if possible. I would also like to avoid getting a new ecu. I already know the 05 van ecu does both flex fuel and 3 bar.

Thanks

[monte4ever]

Some use a 3bar MAP sensor with a 2 bar OS.

[monte4ever]

Check out post #52.

https://ls1tech.com/forums/forced-in...bar-map-3.html

[nnicholas]

This makes sense. I'll just adjust my my tune to fuel for more boost even though the ecu maxes out at 2 bar. I guess I'll just lose some resolution but that's not a big deal. Thanks for the help.

[Kaganader]

411 p01 ecu COS 2bar max with flex fuel. as stated adjusting tune for fuel due to lack of resolution of map reading is the way to do it for your situation. If not swap to a p59 ecu.