MAP Query

[Xistant]

hey ppl if this has been covered please feel free to hurt me all over

my question is, 1jzgte engine, stock map if i changed this ti a 3bar map what would be the problems without engine management?

i would presume fuel would lean out due to the differance voltages the 3bar would send to the ecu?

 

[1JZ A70]

Yep spot on, your 3 bar map has a complete different output voltage range to the stock map sensor. However they will both be 0 - 5v.

Any aftermarket ECU and or piggyback worth your time will have the ability to program a new mapsensor.