So i just installed my AEM wideband into my civic with a basically stock gsr. Im concerned with my AFR's at light throttle. ( 25% and less ... highway cruising ) they seem to be fluctuating bewteen 14.6-15.3 consistantly. Seems to be a bit lean? whats everyone think?
runs 12.5-13.5 in vtec.

only Mods:
STOCK airbox setup with oem filter
Removed butterflies in stock gsr mani
itr header with 2.5 exhaust
stock P72



thats it for mods...

 

Those values are usually what the tuners target their afrs to, maybe not the 13.5 at WOT but still.

 

wow ok... seems a bit aggressive to me for a stock P72 but ok... just wanted to make sure there wasnt anything going wrong here.

 

OP, those values are fine. Does it stumble?

 

no driveability problems... everything runs great.. seems stronger than any other gsr ive been in too...

just wanted to make sure i wasnt slowly melting my pistons away

 

Everything seems right for a factory ECU. I have WOT street tuned(S300) to 13.0, partial throttle 14.7 and cruising to 16.0.