550s not actually 550s?

[spectr019]

Finally installed a wideband last year, got in accident, couldn't drive the dsm till this year. Tuned it with pocketlogger previously, everything (and by that I mean basically the timing curve) looked smooth and straight. I'm looking now on the wideband, and even around -23, -24, and -25 I'm still running around 9:1 for air/fuel. Is there any chance that I could have been sent 650s or something at least larger than the 550s when I bought them and just never realized it (i bought them from extremepsi, so it's not really like a guy in the classifieds looking to sell some 550s and actually send stockers) cause I didn't have a wideband? Fuel mods are re-wired 190, 550s (?), and S-AFC II. I understand that every car reacts differently to modifications...is it possible mine is just this extreme and that I have to lean out even more? If anything it was probably just a human error when shipping. Are there any numbers on the injectors that I can look at WITHOUT taking them off of the rail to make sure? Thanks for the help.

Ben

 

[grnchevyz]

What brand Injectors are they? Most of them engrave the size on them. If not, what color is the top? And what are your AFC settings currently?

 

[->PrOjEcTGS<-]

Done a boost leak test lately? That will make you run rich.

 

[spectr019]

What brand Injectors are they? Most of them engrave the size on them. If not, what color is the top? And what are your AFC settings currently?

The injectors are Precision Turbo and Engine, pintle style. D1151BA is imprinted on the side of the injector. Top just looks black, can't really make anything else out. AFC settings for low throttle are -17 - -18 across the board. I've had it at -13 - -15 for years, went through when I got the car running with the pocketlogger (low throttle is basically what I'm going to be using the logger for now), and the trims are closer to 0% with those settings. The wideband is still showing me that I'm stoich at 14.7, flucuating from 14.4 to 15.2. My high settings are -23 - -25.

I have checked and checked and checked a bit more for boost leaks. I didn't find anything. And just last week I had a machine shop do some work on my throttle body and intake manifold. Replaced all gaskets for said items, did a compression check, and I'm at 160psi at all four cylinders. So I'm stumped!!


Ben

 

[spectr019]

Just throwing in D1151BA on google, the first things that you'll notice are the numbers 550....So okay I guess I'm running what I originally believed.
I'll start checking for more boost leaks that may not be obvious...?

Ben

 

[DJ23GSX]

When you do your next boost leak test open the throttle body all the way to see if the shaft seals leak. Mine don't leak when the the throttle body is closed but as soon as I open it they start to leak.

I'm just curious what your timing looks like at wot with those safc settings? Have you checked your base timing lately?