new 680cc injectors and odd afc settings

[spectr019]

Okay quick question...I've read a few people have gone through this situation, but now that it happened to me I feel like I'm the only one...

Just installed PTE 680cc injectors. I have a re-wired 190 pump, stock fuel pressure regulator, pocketlogger, and wideband.

Before I started the car, I set the corrections on lo th to -30% across the board. Started the car, my wideband AND narrowband wouldn't even read anything. I raised the correction to -20%, it got better; my wideband started reading around 15.5:1. Ultimately, I am at -7 for idle (1000rpm), raises to -4, then 0, then back to -4 from about 3000rpm till redline. My fuel trims are close to 0, usually off by 2 or 3 with these corrections.

I switched these 680cc injectors in place of my 550s, and with those I was good around -17.

I checked everything that I disconnected...fuel pressure regulator, electrical clips, everything. Everything is good, and the car IS running. I even have it running with good trims and a/f ratios.

So am I good with just following what my logger and wideband are telling me? Or am I really opening up those 680cc injectors almost as if they were still 450cc because I'm so close to 0%?? Thanks for any advice.

Ben

 

[toofast82]

Did you buy the injectors new or used?

 

[spectr019]

bought them new from extreme psi, here is the description: Precision 680cc Ball-Style Injectors : Mitsubishi Eclipse 90-99 Turbo #16331

I went for a drive, a/f is always around 14.2-14.8 around the city. Jumped on the highway, I was INCREEEEDIBLY rich with similar corrections. Had to keep leaning it out until -40. I'm from -40 - -44 with a/f ratios inbetween 10.8 and 11.2 on 93 octane, corrected at 19 psi, going to raise it back up to 21. Sooo I guess it's okay...?

Ben