Hey all im having trouble with my 2010 ss lnf, getting the code p2187, too lean at idle, bank 2. And ive replaced maf, upstream and downstream 02, something is still causing my afr to freeze and then it throws the code and reverts to stock boost, any ideas?

 

do you still have the vacuum tank installed on ur car?

 

yes i do, fill me in

 

bypass it, possibly has a leak

 

and that doesnt give a CEL?

 

Not always.

 

unfortunately im trying to work around smog emmisions and cannot register the car with any cel

 

Try bypassing the vacuum tank or cleaning/replacing your air filter and clean your maf