You should have both heads rebuilt.
I didn't do anything with my injectors during my rebuild.
Do you have the new larger orange o-rings for the intake manifold to TVG's. Thay should be replaced and you should tighten all the fuel lines under the intake.
199,000 May 12 new ej257 short block, Aug 11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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