a/f problem!

[CarlosPTR210]

Hi Guys,

First, please don’t reply this post because my poor grammar skills:cry: .

Ok!,

I have some problem with my A/F ratio, if I boost with out a WOT condition my A/F ratio is around 13-14:aigo: , but when I boost at WOT my a/f change to 11.

What can I do:1zhelp: ?

I have a Lex and 550 injector, AFP regulator and a Apex AFC?

Thank you all

 

[mhopemk3]

What's wrong with that?? Maybe a little rich @ WOT.. Not by much though..

 

[CarlosPTR210]

So is normal???:icon_bigg

 

[Boost Lee]

So is normal???:icon_bigg

:rofl:

I don't know why...but the impression I got from the way you put that was kind of funny. Sounded like a little retarded kid that found out he wasn't really retarded? :naughty:

Anyways, that doesn't sound "perfect"...but definately doesn't seem like anything is wrong...

+1 for being overprotective on your Poopra.

Jeff

 

[MDCmotorsports]

Its wrong if:

-You see any thing leaner than 12.5 under boost @ any throttle %
-You see any thing richer than 14.2~14.5 at any throttle % >1% at 0 vacuum or below (no boost)

 

[CarlosPTR210]

Yep, the problem is:

the thing leaner than 12.5 under boost @ any throttle <60%

could be a air leak?

 

[againstdawall06]

cant you tune the AFC to make it richer? i dont know a hole lot about them so im not sure.

 

[dbsupra90]

Yep, the problem is:

the thing leaner than 12.5 under boost @ any throttle <60%

could be a air leak?

nope thats the car doing what it was designed to do. anything less than ~75% throttle it is running closed loop. in closed loop, the ecu tries to maintain 14.7:1 a/f.

 

[CarlosPTR210]

Conclusion.

When I boost, the safe way is the throttle >= 75%, other wise the ECU will adjust the timing fuel s etc etc to 14 to 15 a/f.

Right?

 

[aljordan]

Just drive the car and let the ECU figure things out. There is nothing wrong with the car. It is running just as it was designed.

You are unable to tune any condition that is in closed loop. You'll make a change, and the ECU will do whatever it wants.