injectors adaption (running rich)

[lynx]

Hi

I have one question. I know ecu can "learn" some values.

So, I have 3b engine, witch has mapped for green injectors (turbo, etc).
One day I just wanted to try a 600cc/min injectors. Car was terrible, idle too. At the wot a/f was aroung 8-9, even when we dropped fuel pressure below 1bar (with vacuum - normally around 3 with vacuum). So, we put old injector back and turned fuel pressure like it was.

All is ok, but at the wot still to rich (spooling around 9 and max. boost around 10-11). So, I have driven this way couple of day' s . . . I tried to disconnect ecu for first time 2h, then about half a day, still nothing. For a last I turned a fuel pressure to 1,5bar (with vacuum) and seems ok, but fuel consumption is bigger.

So, how could I solve this problem?

regards,
marek

[audiman]

ecu needs chip change to suit the new injectors

[lynx]

ecu needs chip change to suit the new injectors

I know that, I have problem now even with old injectors, witch was working before just fine. If I turn all like it was before, I got too rich mixture. Tried to restart ecu, but still nothing.

[blown_vr6]

Well id say your fuel pressure is not the same as it was prior to the swap

[lynx]

Well id say your fuel pressure is not the same as it was prior to the swap

I have 2 fuel pressure gauge.
One is electrical, other not. Both of them showing same values . . .

[Jamo]

How do you know fuel is rich? As there no mention of AFR ratios only boost levels?

[lynx]

How do you know fuel is rich? As there no mention of AFR ratios only boost levels?

ehh, where I mentioned boost levels?
I' m using a 30psi overboost, sometimes even 35psi peak, drop 25 to redline. Anyway, that' s not the point.

Look at the first post, all there. I use wideband and figures is there

[|Maku|]

I’m pretty sure that your fuel pressure isn’t 100% the same as it was before.

[lynx]

...

[lynx]

about fuel pressure . . . I think if it was before 3 bar, and now below 2, then yes, it' s not the same I can' t see any problem to turn it like was before. I have 2 fuel pressure gauges . . .