Hello I have a Friend with a 4.3 V6 TBI, with a 7747 ECM, and he was lost this Chip. I hve a Chip Burner, But I need a .bin with a custom Chip for this engine. Any one have some .bin without: -EGR -EST -VSS -Knock -TCC and may be with some tunes for this engine. Please if anyone have some .bin, send me by email to facundo at lozano.cl Thanks Facundo