Running totally lean after 5500rpm
 

D16Z6
15g turbo
450's
walbro 255lph
ebay fmic
Running 9psi@ectune

The car runes fine in every gear, till 5500rpm that is. After that it feels like fuel is cut and the car sputters and holds in. The A/F gauge also reads lean from that moment on (duh).

New FPR; no result
New pump: no result

Is it possible that the injectors are clogged? If so, why isn't the car holding in/sputtering @ lower rpms?

Re: Running totally lean after 5500rpm
 

Re: Running totally lean after 5500rpm
 

Re: Running totally lean after 5500rpm
 

Add 10% fuel and see what happens..

Re: Running totally lean after 5500rpm
 

You don't understand, I was actually getting it tuned when that happened. So Frank (@Ectune.com, great guy!) was tuning the lower rpm range. While tuning, he already mentioned I had a very thirsty turbo. After that we went for the higher rpm range, and that's where we found out it went lean (@ WOT). So, not enough fuel.. what could it be.. Fuelfilter seemed fine. FPR? Fuelpump?
So we put a working FPR on, no result. Also a new walbro 255, no result. We didn't had any other injectors available, so we couldn't proceed with the tune, and I went home.

So, again, what else could it be? And then again: Is it possible that the injectors are clogged? If so, why isn't the car holding in/sputtering @ lower rpms?

Re: Running totally lean after 5500rpm
 

Try and add a ---- ton of fuel. If its to much take some out.

Re: Running totally lean after 5500rpm
 

Quoted for the lack of common sense.

How exactly does a fuel filter "seem fine"? Did you flow test that bitch?

Not saying thats your problem, but your problem is that you are overlooking something increadibly obvious, as you would rule out a fuel filter, such you have already ruled out something else.

Post pics of the engine bay pls.

Re: Running totally lean after 5500rpm
 

wait you are discussing going lean on a basemap. No ----, dont rev even close to 5500rpm. Stay out of boost fool!


GET A TUNE CHEAP ASS

Re: Running totally lean after 5500rpm
 

It was being tuned when we noticed it you dumb ass fool. In ectune we maxed out the injectors and we still got the same problem. (450s + 255lph not enough for a z6+15g? = something wrong)

Re: Running totally lean after 5500rpm
 

Here you go