a freind of mine with an st170 gets about 32mph, same as i get from my 2l focus zetec.

Sp3no, you may have lambda sensor issues mate if your only getting 220 miles to a tank...unless of course all you do is town driving!!

personaly i'd rather spend the difference between my cars value and an st170 on my car and get the same or more power than an st170 with greater reliability! (that includes st170 front brakes too)