i have done plenty of mpfi swaps but for some reason this one sucks. the car runs, idles, drives fine but when it gets to about 4500 it falls on its face. but it will hit rev limit in nuetral. but when im driving 4500-5000 no matter what gear no power, using pm6. also does anyone know how to tell the difference between the auto pm6 and manual pm6

 

good luck im not to sure how to fix and i dont want to lie

Bump