How do you adjust the turbo boost on 1991 mr2?
If you are going to start tinkering with your boost levels this
is what you need to do:
Purchase the following:
An accurate boost gauge.
Electronic boost controller
Fuel Pressure regulator
Air Fuel Ratio gauge
Wide band O2 sensor
Have these parts PROFESSIONALLY installed and pay the money to
get it tuned.
If you just get a boost controller put on and give it a crank
your fuel will lean out and your engine will detonate.
Also it might not be a bad idea to get a fuel controller from
Apexi. That will cost you though. So will the O2 sensor. You can
get away without one, but you should just leave the boost alone
after its tuned.