260 help help help bogging problem

[tangerine386]

never had more than 2amp charge rate on that ecu what voltage when running vs not running im gonna check some ground wire this weekend

[FUJIMO]

...yes, perfect grounds are important on anything thats efi. direct grounds and chassis/system grounds. its actually the very first thing that should be looked at thoroughly when diagnosing an issue.

[ShadowFlier]

Are both ECU's you've tried A17's? Try a box meant for a 260.... Or post a picture of the ECU your using. A17 should be all black with an embossed EFI on the front which is meant for a laser injection set up, not crankcase injected.

[CI STV]

For the hundredth time: why not fix the fuel pressure, first and foremost?? The regulator is downstream (ie located on the return side) of the fuel rail, and controls pressure by releasing fuel back to the tank.
So, if you’re seeing 55psi ANYWHERE on the inlet side of the rail (or anywhere between the pump outlet and the regulator), then that’s the pressure the injectors are seeing!

[2015Duramax]

For the hundredth time: why not fix the fuel pressure, first and foremost?? The regulator is downstream (ie located on the return side) of the fuel rail, and controls pressure by releasing fuel back to the tank.
So, if you’re seeing 55psi ANYWHERE on the inlet side of the rail (or anywhere between the pump outlet and the regulator), then that’s the pressure the injectors are seeing!

Exactly what I've been saying ! fix the known problem first