I solved the problem already, throttle has so much slack now it is tightened but not too much. Thanks for the inputs. More power HAF

 

Hey partner you mite want to do what i did before you go spend any hard earned cash!
What i did was take the entire air intake out(intake plenum)and clean the inside of it real good!what i used was a toothbrush and gas.
Its like cleaning the EGR ports only better!and clean the fuel injectors as well and throttle body.
Now you will need to buy 2 gaskets...the intake gasket and throttle body gasket,i believe i paid $27 for both.
do that then check to see how it runs?i had some what the same issue your having and i cleaned the intake,injectors and throttle body now she runs like a champ!
good luck!

 

thats what my manifold swap was for