Can I use MFI from a 2.2 on a 2.7?
 

Can I use MFI from a 2.2 on a 2.7?

If so what do i have to do to make it fit, the 2.7 currently has CIS.

Camshafts with MFI pulley boss
Throttle bodies and all other associated items
Send off pump for calibration and space cam (with camshaft in mind)
MFI mounting base
possible fuel pump or fuel pressure regulator
Eyebrow current pistons or New pistons with valve pockets if you plan to use a decent cam.

Might be a little more work than you had thought but wake the motor up quite a bit.

I have pair of GE60 and JE pistons, a friend of mine has mfi on his 2.7 and he gets reasonable fuel ecomomy as well as having the power when he wants it.

Well the fuel mileage shouldnt be great but if you get the proper stacks done(2.4S) or sourced, with matched ports you will be pleased. The only difference between the 2.4S and the 2.7RS stack was a larger Idle jet...thats it.

To add to Aaron's list you will have to have the heads machined for the MFI injectors. The 2.7 heads did not have the holes.

Also there may be head work to port the intake and exhaust to work well with your chosen cam and compression ratio.