been thinking of what to do next on my S2, seem to be getting used to the power now, and think i want more if possable!,

The spec is in my Sig, on MFI with fuel pressure mod, coping ok!, estimated at 210bhp,

i cant afford efi at the mo, just rebuilt the engine in october covered 4k in it now, could i install a 5 th injector and raise the boost to 25psi, and gain a few more horses, or shall i just leave it,

would the efi on a xr2i run on mine car using the efi to mfi adaptor plate and just bolting the efi inlet on with the efi loom, do i have to change the fuel pump and tank over or can this be wired up to use, also do efi have that crank sensor thing on the bottom pulley could this just be pulled off a 2i, not to good with injection systems upgrades but if i have everything at hand ie donor car i can do it.

just i can normally can get hold of rotten 2i's to use!