sooo lean....why??

[NOMIEZVR4]

i have a logger and my car has always run realll lean and i still havent figured out why. i have a 90 laser with mods in sig, my cat is on right now and my dump is not on the car. my maf is not hacked at all. my fp is not rewired or anything. i need some suggestions as to why my car is running lean. im running 12-13lbs of boost. my logger displays the following:

fuel trim lo 118%
mid 94%
hi 116%
02 volt at WOT .92-.94
timing at WOT 11 degrees(why so low??)
knock maximum 30+ (in 2nd gear around 5k rpms)

if there is anymore info that you need, please ask, i need suggestions, also i run 93 octane.

 

[larryd]

Are you basing doing your tuning soley off of the o2 sensor? This is really recommended against because of the inacurate readings. Your timing is so low because your car is knocking BAD.

Maybe your fuel pump is going, maybe your injectors are clogged. There could be ALOT of different possible situations.

 

[NOMIEZVR4]

i dont have an afc yet, so i cant really tune. im getting one this week though. but actually what should i tune my car based on?? its knocking because it is running lean correct? i am also getting a 190lph fp soon, and hopefully that will help. any other suggestions??

 

[RedlinedTSi]

Mine looked the same until I put my Walbro pump in. Now my trims are all rich. That fuel pump will probably fix it.

 

[chinchin]

my o2 readings were at like.80-.82 and i was only getting 10 to 12 knock count with timing around 22-24 degrees plus i got no knock in 2nd only in 3rd at 14 psi