I'd say you are doing it wrong. 1.8 injectors are to big for your 1.6 anyway. 8v head doesn't flow that much air as 16v would and your mod with 2.0 throttle body will give you nothing. 1.6 CVH EFI throttle body is big enough even for 2.1 ZVH so why change one? I'd say you are doing to much mix match here. Wise thing would be to get 1.8 zetec and put what you have on it along with 130 BHP cams...then there would be sense.

M.