Originally Posted by
PeterRST
Some of the people above have just shown their lack of knowledge about how things work. But I reckon they book their car in for a spark plug change, too so fair play to that...

Originally Posted by
PeterRST
You can do it yourself if you get yourself a wideband lambda kit. But MFI can be a pain to adjust so better leave it to someone experienced.

So you've just told him what we told him to do in the first place
Fueling,timing,boost ect.. should NOT be fucked about with unless YOU (or your mate) KNOW'S EXACTLY what you are doing end of story.