right whats the difference between the early 105bhp zetecs and the later 115bhp engine? is it jus the afm?

 

I think the Throttle Body is a different size but not certain.

 

thats whta i was lead to believe aswell. the only differances between the 105 and 130 is cams, throttle body and ecu oh adn the 130 has extra oil jets under the pistons. easiest way would be to get the part numbers for the cams and throttle body for the 105 spec and the 115 spec and compare. if they are the same then the it must be purely the ecu that make the extra 10ps.