Here goes...

The car has been sitting in the garage for a year. Just had the engine and transport out. Replaced the actuators with ones that I can change the spring on. Currently 3.75psi spring. Also changed the oem engine mount with some ams engine mounts for more engine space and because of the actuators.

Engine and trans back in. Fired it up and idles fine at first start. The problem begins at the first test run. With the avcr of I get about 0.1 bar boost. I am able to get 0.3-0.4 bar with avcr on. That seems to be max. The other thing is that when driving I get a really bad vibration/rumble. It's worst in fifth gear. Feels like less vibration/rumble if I go down to forth or third and so on. Vibration/rumble dissappear when I go off the throttle og put in neutral.

Let's says I'm driving at 70km/h in fifth. I got the vibration/rumble. If I go og the throttle the issue dissappear. Thebrumble/vibration is there a crusing speed. But gets really bad when acceleration

The vibration/rumble is so bad that I have to go from fish to fourth just to get up a hill. Feels like a major vacuum /boost leak, but did a boost leak test and didn't hear any hissing, so no leaks....

 

Hint/tips? Questions?

It could be firing on only 5 cylinders. When I had an injector fail my car was doing something very similar. Check the connections to the PTU, the injectors and the coil packs.

Hope this helps.

Is there a loss of power when you get this 'rumble'?

 

AMS engine mounts you say!? Mmmmm. Check those too....

had time to do something today. Did a test on the coils and number 6 doesn't seem to work. Changed all the spark plugs and swaped coil pack number six with number five. But coil 6 still doesn't work. I have splitfire coilpacks. All ohmed 0.9.

Are you getting voltage to the coil pack? There may be a bad connector or a break in the wiring loom?

found the problem. One of the wires to the injector was broken. One small but big problem solved. Thank you :)