Hoping someone has a simple (or understandable) answer to finding the value of my final rear differential ratio for my 2005 2.5t automatic, petrol, XC90 please. I’ve done a few hours googling and the best figure I’ve got for 2.5t final drive ratio is 2.862/ 2.56 (ie two figures!) (The 2.56 is used f...

I know this is an old thread but it’s still being accessed, so I offer some additional info that has taken me 3 weeks to work out;  there are several different fuel control systems on P2 V70s, XC70s and XC90s dependant on year/month. the system often discussed has a PEM (or FCU) which controls fuel ...