Got my CTT S last week and noticed at idle it runs a wee bit rough also if I give it 100% throttle it seems to hold back then I hear a funny noise like an air leak. If i give it 50% throttle it goes like a scalded cat.

I am guessing knackered coils and leaking DV's? I have ordered 4 new coils and 2 new recirc DV's

From what I have read this seems common issues??

 

You go it! I'd recommend doing all of the coils though...

 

Yes prob will. Porsche changed 2 not so long ago so was hoping 2 out of the 8 are still ok.

 

Coils look like new, plugs as well. So not that.

I unplugged both MAFs and went for a run. I would say the car went a bit better and idle was more or less perfect. Need to source 2 new mafs by the looks of it.

Plugs are BERU 937, right ones for the car?

Coils are either 948.602.104. 05 or 07

I suppose it kind of makes sence, even when the wife is driving it she can only get 17mpg out of it. She used to get 28 out of my M5. I dont expect 28 but i would have though she would get around the 22-23mpg mark, so maybe does point to a dodgy maf or 2.