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checked and there aren't any boost leaks, boost gauge sits steady at 14psi when doing 110kph and then just starts losing speed up any hill, feels like its starving of fuel but don't know why, have replaced vacuum lines and MAP sensor. could it be timing done incorrectly when head was replaced or...

I had taken the car back to the mechanic that did the work and he suggested there might be an issue with the turbo itself but that doesn't make sense to me as it still makes 14psi of boost, just makes a loud whistle noise when cold but that's been like that since I've had the car, haven't...

hey mate, experiencing a similar issue, my zd30 d22 drops down to like 70kph up inclines and also have to drop back to 4th gear. Has your car always been like this? I'm experiencing this issue after a mechanic replaced the cylinder head on my zd30. check your MAP sensor and the vacuum line going...

Hey everyone, recently had the cylinder head replaced by a mechanic on my zd30 and when I got the car back I immediately noticed it has lost about 20% power loss in every gear. Top speed is now 120kph and it used to be around 150kph. Struggles massively up hills and is near impossible to...