injector size on 1400CC turbo renault????

[mark 5t]

i would like to know how to calculate the size of injector i need.

i have a Renault 5 GT Turbo 1400cc 4cilinder engine running on 1,5bar (22 PSI) boost.

problem is that mij exhaust temperature is getting to high.(above 1060 degrees centigrade)

engine is not running lean.


i want to get mij temperature back to about 900 degrees

someone can tell me more?