90 integera bad gas millage n code 43

[delsol_racer]

So ya I hve tha cel on and really bad gas millage I changed o2 and ecu adjusted valves hVe 40 psi fuel pressure no fast idle when cold start any ideas. all stock motor no mods

 

[delsol_racer]

Still cant figure out. Canger iat tru code for it. Changed ecu o2 fuel fliter plugs. No fast idle when cold wont stay runnin unless screw on tb is all tha way screwed out. Runs really rich idles like crap
Any ideas

 

[dirt]

supposed to be 41-48 psi on those. But if you have 40 I would think that would be a gauge calibration thing. There are tests in the helms for this. Electrical/vacuum/mechanical! Everything I have read points to the regulator in some sort of fashion. (won't run while warming up) That's where I would start!