setup: gsr 9:8 srp piston eagle rod, block guard. 440 rc injectors walboro 255 fuel pump, vfac (using to tune the fuel) drag gen. 3 turbo kit

I went to tune and dyno my car..i had 310 injectors before..i had to upgrade to 440 b/c i maxed it out....dyno 274 whp @ 10 psi. any ways...ive been getting the check engine code "rich fuel in bank1" i have my narrow throttle turn town to -30 1000rpm - 4k. what do you turn it down too? what do I do to fix this problem? need help please. thanks

 

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