MAF problem or something else?

Thatweirdguy · June 15th, 2010, 11:09 PM

I just installed my C&L cold air intake and tuned it with my sct sf3 flash tuner on my 2010 gt.

The car runs great and I see noticable performance but!... Problem is my check engine light is on. So, I run my tuner and the codes are:

P0171: System too lean (b1)
P0174: System too lean (b2)

If anyone can fill me in and give me advice how to fix this prolem it would be great. Any comments are appreciated. If you do respond put it all in simple words- I'm still a noob

blownstang · June 15th, 2010, 11:15 PM

I'm pretty sure that means the bank 1 and bank 2 oxygen sensors are reading very lean. You need to richen the tune using your tuner. The 05 and up computers are very picky about mods.

June 15th, 2010, 11:09 PM	#1
Thatweirdguy Look Ma! My First Post! Join Date: Jun 2010 Posts: 1 iTrader: 0 reviews	MAF problem or something else? I just installed my C&L cold air intake and tuned it with my sct sf3 flash tuner on my 2010 gt. The car runs great and I see noticable performance but!... Problem is my check engine light is on. So, I run my tuner and the codes are: P0171: System too lean (b1) P0174: System too lean (b2) If anyone can fill me in and give me advice how to fix this prolem it would be great. Any comments are appreciated. If you do respond put it all in simple words- I'm still a noob

June 15th, 2010, 11:15 PM	#2
blownstang Hardcore Enthusiast Join Date: Jun 2010 Location: Chicago, IL Posts: 2,551 iTrader: 1 reviews	I'm pretty sure that means the bank 1 and bank 2 oxygen sensors are reading very lean. You need to richen the tune using your tuner. The 05 and up computers are very picky about mods. __________________ 2003 DSG Mustang GT 5spd Full Bolt On's, Suspension, Built Rear, V1 S N/A: 266/300, 3,550lbs, 13.44 @ 100.5 1.77 60' Non-intercooled: 356/371, 3,575lbs, 12.81 @ 110.47 1.86 60' Intercooled: 362/370

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