02' WRX
5spd MT
2.0L T w/63k
code: p0171

went to the zone today after getting a check engine light that comes and goes, 1st tended to come on after long drives but has become more frequent.they told me that a p0171 code came up. System is too lean. anyone have any problems with this code that seems to be a common problem or have any suggestions on what to check.


current mods: cai, bov, cat back, b/c

 

the cai, the bov & the BC aren't helping anything......in fact the CAI & the BC could be causing the code.

check your fuel filter as well...

 

yeah i bought it like that, but the code didnt appear for a while after buying it. i was told to check the filter but it looks pretty new, plus no stumble or lopping when i get on it. i was wondering if turn'n up the boost would wear the injectiors that badly.

 

no, but you're wear the engine out not getting it tuned properly.....

 

I leave the b/c off cause of gas prices and the temptations it gives me. Anyway i put a bottle of FIC and the light went off again, im gonna drive it more to see if it stays off. Another question on the b/c, i got a greddy profec B spec 2, im not sure how to calculate boost increases, i think i goes off of percents of total boost. can you help?

 

sorry, I'm not familar w/ the Profec B. Removing the BC & the AEM CAI would be the best thing you could due at this point for your car.

 

yup...i use to have a CAI and rfl bov it made my car run like ****...remove the CAI and put back stock one...and BC or if you really want it... get it tuned! if not go with the cobb OTS map

 

sorry cant go back to stock parts for intake cause i bought it like that but, i just leave the b/c off until i can get lager injectors and a tune.

 

you dont need to get injectors on a stock turbo