I need to agree with the Other folks, the ITB's must run just like a scalded ape. Especially down small or everywhere you go between. If they are not, then I might also Verify gas pressure, and make sure the throttle linkage is opening all 4 equally and evenly (synchronized). https://setheeedb.blog5.net/75803909/the-smart-trick-of-4a-ge-engine-for-sale-that-nobody-is-discussing