Hey lovely people!

I have this old 95 accord with an f22b2 and I'm having problems with afrs and stuff after I put in new injectors
Setup:
eBay turbo/piping/ almost everything @ 6psi
chipped p06 running a demon using Honda Tuning Suite
Fuel Injector Clinic 770 cc injectors.
AEM wideband setup and sensor

Car ran fine with stock injectors. It had good AFRs in boost and idle but I was at >90 % duty Cycle so I figured I should get some new injectors so I don't risk it going lean and blowing stuff. Went with that size so I have lots of room for growth and E85.
Problem: After installing the FIC injectors the car runs fine at idle but then after warming up and putting some load on the engine the AFRs go very lean when I let off/engine break. Lean as in super lean 25+/ wideband getting maxed out. Also, the wideband gets maxed out for a long time before returning to normal afrs. The Lean problem is almost exclusively when I have no load on the engine and I am in vacuum. For example, it happens when I am revving in neutral or engine braking or putting the clutch in and letting revs fall.
When the engine has load on it the AFRs are pretty rich and in first gear, it sputters and kind of backfires before it can hit redline. In second gear it revs through fine except it is significantly richer than first gear is like first is 12 and second is like 10.3.
In addition, a lot of times in a low load situation, I give it gas and the AFR is like 14.7 for a second but if I keep it at that RPM level the AFR goes lean.
I have done all sorts of messing around with fuel tables, overall fuel, tps tipin, and stuff like that, but no matter how much I give it fuel it still leans out so bad in low load situation/vaccum(20-25+ AFR). Sometimes the AFRS respond well for a little bit but usually go bad and the whole problem seems to be really inconsistent. And I have double/triple checked the injector voltage deadtimes from the datasheet FIC gave me.
I also have some cheap 550cc ebay injectors lying around and put those in for a little bit to see and same probelms. The Problems seem to be consistent when using higher flow injectors. I got the FICs flowtested nearby so I know they're good
I have replaced the fuel filter, Pump, spark plugs, wires, distributor, fuel pressure regulator, and even the c14 capacitor on the p06. Also have checke for vaccum leaks. These things seemed to help the issue but did not fix it. Before some of these things, I couldn't get the damn thing to idle at an AFR below 16. But now its better.

TLDR: lean under low load normal-rich when engine has load.

You guys have any ideas? I am honestly at my wits end. I have been working on this issue for almost two weeks and I have no idea what's going on. I am a newb with tuning and stuff but I have done a lot of research and was able to get the car running good with the stock injectors. Thanks in advance for your time!

Dominic

 

Update: I think im a tad dumb. I looked at maps and ignition timing is pretty retarded near 5k and it doesn't read full boost. In second gear at 3k it does so I think i just need to tune that out. But the wideband is still maxing out and staying very lean(maxing out wideband and staying maxed out for a good while) under deceleration/ engine braking. Seems like even this early hondas shut off fuel injection under deceleration until 1500 rpm. Can anybody confirm this? With previous injectors the wideband maxed out on deceleration but never stayed maxed out for as long as it is now.

 

Get a professional tune before you blow your engine. If you continue to do WOT pulls on an untuned map that will be very soon. You should not be hitting any boost AT ALL on an untuned setup.

 

It is tuned though? Perhaps I was unclear but my afrs are between 10.5 - 12 on wot.
I understand that a professional tuner is ideal but I'd rather learn it myself and get a decent map so I can spend less time at the Dyno. I don't even know if people time Hondas nearby. And if I blow my engine ... So be it I'll just rebuild it and learn from my mistakes.
The whole map has 4 degrees of timing taken out of it as a cautious starting point and I'm reading up on spark plug reading and building a det can rn to be able to add timing when I am more equipped to do so.
I am mostly trying to confirm if a maxed out wideband is normal when under engine braking because I might not be remembering correctly but stock injectors didn't seem to do that for as long as it is now.

 

That does not sound tuned to me at all and it's very obvious you only have a very basic understanding of what you're doing.

If you knew what you were doing you would know how and why the wideband is giving that reading, and what adjustments to make accordingly. Understanding that and being able to add or remove fuel is the absolute bare minimum knowledge you should have before messing with an ecu map. Did you even scale your map for your new injectors?

Again, you need a professional tune before you destroy the engine via detonation or washing out the rings and diluting the oil into oblivion. I can also tell you that pulling 4 degrees for 6psi is not ideal either.

 

​​​​​​I pulled 4 degrees across the whole map in addition to 1 degree per psi after the map goes positive. People tune engines on their own all the time and I want to do the same. I am going to add timing while checking for detonation by looking at plugs and with a det can.
Its not tuned very well but the engine is certainly not untuned.
Had it occured to you that I am very aware of my basic understanding and am on these forums to learn from people who actually know what they're doing??
I don't wanna a professional to tune it. I want to tune it and learn that's why I'm on these forums.
Maybe I'm at the wrong place lol

 

And yes I scaled the map for new injectors. Believe it or not I'm not just clicking random buttons on my computer like a monkey. I'm pretty sure an unscaled map going from 240 to 770 cc would probably not even be able to start lol.
I have read a million forums on this website and others and watched lots of videos including some PFI speed on how to tune. I may be a newb but I'm doing my best to educate myself.

 

Did you set the dead times on the injectors?

 

Yeah I did. Well got different plugs and gapped them. That fixed the spark blowout. Turns out the lean problem is totally normal and not a problem. Guess I didn't even have to make this post lol.

 

HAHA yup I just read the first post more carefully and yea its supposed to read lean once you have no load and off the throttle.

Although you may have a slow reading AFR gauge! like the AEM units, I like the Innovate MTXL its very fast and accurate!