Pony123

I recently ordered a tuner from BBK with the :

93 Race tune
93 Performance tune
89 Performance tune

When i received the tuner i had Lukoil 93 octance and i uploaded the tune.. Drove the car for about 30 miles needed Gas. Put the 93 gulf gas drove the car around then later received the check engine ligth. Ran the code and receive P0171- System too lean. Right now i put Shell gas on and i am riding on the stock tune because i didnt want to damage my car. I reset the Check engine light and yes afternoon, then when i accelerated harder the light came on and again code P0171 .

I think it could of been caused by my BBK CAI . Could be tuned for stock airbox and intake is bringing to much air into the engine causing it to run lean. I dont know do you guys have any idea?

My mods are :

BBK CAI ..
Pypes Offroad X- pipe

Nuke

Are you saying you're running the stock tune with the CAI? Not a good idea. That alone will cause a lean code. But the fact that you claim (if I read you right) to have had a lean code with the CAI & tune installed makes me think you had an air leak between the CAI and the TB; most likely at the TB.

Pony123

hmmmm
could be especially if it happens after i really pull on the car

But when i had the intake before ig ot the tune i was riding with it for a few months and never threw a lean code