i think the issue is that im out of maf and need a mini afc, when i closed my cutout it doesnt do it nearly as bad i took some vids today, i also changed the fuel filter as well..
first run after closing the cutout and changing the fuel filter, didnt give me any issue until right at redline.
YouTube - ‪Impala ss breaking up‬‏
this was after doing another pull letting the car downshift to first. it started breaking up and you van clearly see and hear it
YouTube - ‪Impala ss 2nd pull breaking up‬‏
and this was the last pull, i put it in first maually and again same thing started breaking up especially in 2nd gear around 3k+ rpms
YouTube - ‪Impala ss third pull braking up‬‏