Do you have a wideband o2 hooked up?

Not trying to hijack the thread but im also having similar issues but i have an automatic. I have the 350 injectors running at 20psi on a 5.7L so its a big change from stock and never had the issue before the fuel system overhaul, from what i can remember at least. Now the truck drives and idles fine but on deceleration it acts like DCFO is turned on although iv tried turning it off for testing. At any speed when i let off the throttle, i can feel the fuel shutting off and the wideband confirms that. It starts kicking to max lean, around 22 afr, then back to normal then back to max over and over until i apply throttle then its smooth until i let off again. From what i can see it happens no matter how fast im driving. Even shut off once while slowing down for a light.