Service in Soon light came on

[5.O STANG]

I went to advanced auto parts to check why my light was on and their tool said bank 1 and 2 engine running lean. Advanced said its not the o2's becuase the diagonostic tool would have specificly said o2sensors bad. They said it was becuase of the air temp. I dont believe that though. Ive got an 04 gt with just an offroad h pipe and drop in K&N. I used to have a programmer and ran 93 octance on it while it was installed. I sold it a few months ago becuase my car was pinging while the programmer was installed. After I sold it I ran 87 octane since. My car has pinged 3 times since I sold it. How can I fix this problem before something bad happens? Should I take it to the dealership first or would an xcal2 fix this?

 

[helty]

arent they the codes that the cpu normally throws with o/r mid-pipes?

 

[ocsurf16]

Get MIL eliminators then sell it

 

[5.O STANG]

Ive got MIL's its the front 02s if anything but it said ENGINE running lean not o2;s

 

[bdcardinal]

check the MAF. the K&N could be overoiled and cause a bunch of oily crap to be thrown onto the MAF.

 

[timeless2]

You said you used to have a tuner; it was likely clearing the SES light. You ditched it, and didn't get rid of the SES codes; now you have them. Get some MIL eliminators.

 

[5.O STANG]

Ill check the filter and the MAF meter. Thank you!!! The light just came on. Its been months since I had the tuner on there and I already have the MIL's.

 

[ponysarepretty]

duct tape and sell it

 

[5.O STANG]

Ill sell it in a year or two for now I need to fix it and get better than a 13.5 with it at the track this wednesday.