Hi folks.

I'm new to this forum and I'm hoping someone can help me out.

I've got a 2007 Mini Cooper non-turbo. I've recently been experiencing a rough, high, fluctuating idle when starting from cold and a reduction in power, whether hot or cold. I'm getting code 287D which just keeps coming back.

I've replaced both vanos solenoids and both camshaft position sensors and the fault is still there. I have checked my timing using a Laser tool and it was spot on. The chain was replaced only 3000 miles ago and it still looks and feels tight.

After replacing the vanos solenoids, I carried out a vanos adaptation reset and got the following values:

Intake adaptation value 148.6 (It should be between 140 and 160)
Exhaust adaptation value 59.2 (It should be between 40 and 60)

My question is: what do these values actually mean or indicate? I'm assuming there is something amiss with the exhaust vanos phaser or exhaust camshaft oil control rings, but do these figures suggest anything definite?

Hope someone can help.

Cheers.