Originally Posted by JonnyBravo
Is the ex housing even stamped with .55 ?
I thought although I could very well be wrong that they were only a machined out .48 housing ?
Without doubt get it mapped though
defo a .55, i could run greys ect but i dont think my engine would handle it,all i know about the engine is its been wire rung
think i may have to get another engine built has a spare