bigger throttle body in RST IMF
 

I run mfi with inlet manifold XR3, and original rs throttle body 50mm
¿ I can put a bigger ? other car?

Capri 2.8i/Xr4i TB

But I highly doubt you've hit the limit of your TB's airflow

oks, thanks for the reply
how big is the capri 2.8 ?

There is no point. As said above the mfi throttle body is big enough to pass more air than your mfi emgine could use.

Yer as above, no point the throttle on the on mfi is good enough, its not like de restricting a K-series engine from a rover 25 to the bigger throttle of the mg-zr