my car started goin lean i put in new fuel pumps new meth pump and control box new fuel regulator no matter what i do it still goes lean anyone know what this could be????

 

What wideband are you using?

Is the pump coming on, for sure?

Does it read normally at idle and partial throttle? Is this only at WOT that it goes lean?

I have alot of other questions but I'll start with that.


I've had issues with fuel pumps, pump not turning on, vacuum line coming off of the fuel pressure regulator - but you seem to have covered this already.

 

aem wideband and ya the pump comes on for sure its sucking down the alcohol .its fine normal driving and idle it does it on spool up im not going wot with 13 air fuels... idk what it is ive tried everything and it breaks up now but plugs are new coild are new theres no knock battery voltage is up injectors are all working

 

Change anything l;ately that would require a retune?

 

post some logs if you can

 

no i would have figured that out it happened out of the blue

 

bump