Hi everyone. I'm a seasoned tech but have no experience with EFI tuning. I recently rebuilt the top end of my personal pickup's 454 (L29) and had a mail order tune done but something is off.
Engine has replacement Brodix heads and a cam. Intake, Injectors and ECM are all stock (black box). Bottom end is stock. From what I can tell the engine is running very lean and it is pulling tons of timing in certain kpa regions. Any input would be highly appreciated.
Tune and two logs are attached.
Thanks in advance!
Philip