So i have this problem, not sure whats causing it.

My car idle's fine. No wierd or abnormal sounds. When i start going into boost, my car AFR's immediately go from about mid 12's to super lean 17:1.

This immediate change happens around 2-3psi.

 

Bad wideband maybe?

Check ur plugs

 

I was thinking about replacing the plugs they are a bit dated,

Why would the WB be causing the issue. You can imediately feel the car lean out.

 

Does the wideband read lean but the car still pulls? An AFR that high would cause the motor to damn near blowup transitioning into boost so sounds like something is up with your wideband.

This just start happening? Any mods around the first occurance?

 

This just started happening...

Today on the way to work.

Car feels like it hits a fuel dip.

I am running an EMU with a A/F target map

 

Ill turn off the target map to see if the WB is the issue casuing the problem.

 

i hope it doesnt blow.

 

Something is going on... I would check your vacuume connection to your MAP sensor immediately and DONT boost the car until you get this figured out. Was my tune running a target map?


Do you have the wideband wired into the greddy now? A bad stand alone wideband will not effect how your car runs so that is definitely not the problemo..

 

^^ fixed, i think. The connector was loose for option 1 on the EMU

and yes, you EMU map is also on a target map.

However I am using a new map.

Thanks, Kev

 

So how is the beast running anyway. I never did hear did you get the boost controller working? How about any of the maps I sent did they help at all? Any Dyno numbers yet?