Small update since last.
*I replaced the knock sensor and the check engine light dissapeared.
)) turns out that the sensor was faulty.
So the car runs alot better now, but still not perfect.
*I found out that the EGR was leaking exhaust, so i blocked it! Works better after that.
*And i found an air pressure leakage, so fixed that as well.
Whenever i boost up to like 0,5bar or higher, it feels like fuel cut. it shakes alot and does not want to go faster.
But i disconnected the MAP sensor entirely(just plugged the pressure hose), so i dont see how that can be it...(?)
i also tried to turn the boos to a minimum, still won't run good when full boost.
And when i have been driving for a little while and stops, the car wont idle perfect. it goes up and down on RPM.
I recently changed back to the original air filter box just to see if that made a difference.
*Recently changed spark plugs (original Toyota parts)
*installed Oil Catch Can
i am this close to giving up and just sell the car... :/
please help