Ford makes the single barrel throttle body on the passenger cars and the double barrel throttle body on the trucks and vans.
Single barrel:
Double barrel:
I plan on using the single barrel version on the MAF injection system on my brother's Duster for simplicities sake. There are far more aftermarket plumbing options for the single barrel throttle body than for the double barrel, and there must be an absolute airtight tract between the MAF sensor and the intake manifold. I am itching to try a speed density conversion on my brother's van which will use the double barrel throttle body.
The problem with the double barrel throttle body is that Ford never made double barrel MAF sensors. There is a one year and California emissions package only factory adapter that mates the double barrel throttle body to the single barrel MAF sensor, but those are hard to find. When I converted my van from speed density to MAF I had to cobble up a home-made intake duct and adapter from aftermarket parts and a 1996 Ford truck piece:
The Ford truck adapter piece I used is close, but not an exact match to what is needed to adapt the double barrel throttle body to single barrel MAF sensor. I had to get creative with RTV sealant, hose clamps, and muffler pipe sections inserted into the thin plastic tube.
I would clear out the plenum on the offy and run a plate to mount the single barrel throttle body.
How are you dealing with EGR?
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