Originally Posted by GARETH T
Originally Posted by Graceland
the 4x4 plenumn has a bolt on elbow for the throttle body where the 2wd version is cast into it already iirc
The other way around,,, a 2wd has a bolt on elbow
Yeah spot on, just sold my spare 4x4 one.
The difference is in the throttle elbow and thats where the restriction comes from. You can open this up by having a plate welded on the outside and cutting away the rest, this with a plenum spacer and its good for over 500bhp.
Escort ST one is good if dont want more than 480bhp, trying to find one is the fun part though.