No one is saying He had sin. You inserted that to make your point.
((not that you are listening anymore))
James shows us that temptation is the arousal of sin pre-existing in the heart/flesh.
It is an inescapable conclusion therefore according to scripture, by God's own definition, the only way Jesus can be "tempted" is if Christ has sin in Himself to be aroused or subject to arousal.
So - I fully understand that you have not thought you position through and don't know the scripture. So I say that 'you put sin in Christ' because it is the clear implication of your false, ill-considered position.
Not that you have yet put enough thought into this to realize what your teaching results in. But that you'd better put some thought into what you are saying because this is the implication according to the Bible.
Christ is God. God cannot be tempted. Christ cannot be tempted. Jesus was "tested/tried" in all things yet with no sin being found in Him. That is %100 different than us. He is fully human, completely unfallen human. We are fallen; He never fails, He cannot fail.