89 225 Excel

[BQUICK]

Has very little power planing off and once on plane rpms at WOT are down to 4500 from 5800.
Bypass computer (A/B) and it runs great.
TPS? Knock sensor? Or computer itself bad?

Any ideas?

[rodbolt17]

all the above, including the manifold bearings.




most likely still fuel.

[BQUICK]

The manifold bearings are brand new.

Why would it run fine with computer bypassed then if it were a fuel issue?