Fuel Injector markings

Mnt86SS

Member
Joined
Jul 10, 2008
So I pulled my injectors to get them cleaned and flow matched in anticipation for the alky kit install. I noticed they were marked with an engraver on injector #1. They're Delphi 17104487 50lb injectors, which match my TT chip.

I guess my question is, what are the 43.5 and 45 markings? I'm assuming 43.5 is referencing 3 Bars, and the 45 is lbs? If that's the case, should I bump up the fuel pressure with the line off to 43ish, or leave it as is at 40psi?

At WOT I'm seeing around .790-810mv with no knock at 16-17lbs of boost. Hopefully they come back with a clean bill of health, and once I install the alky I can work my way up into the 20-25psi range.


20230627_171411.jpg
20230627_171509.jpg
20230627_171403.jpg
 
Top