All These D*** Codes!!!

[CRASH00527]

hey guys i need some serious help. i had computer codes pop up on my car before. the first time is started was at th track about 3 weeks ago. half way down the track on my 1st run, my engine light went on. i pulled codes 0101-maf and 0420- pass cat. so i put new magnaflow high flow cats and flowmaster exhaust catback and slp maf. i cleared the light. now its good. i go for a ride on the highwaya few hrs later and decide ..... let me take for a good run. than you know what happens!!! CHECK ENGINE light pops back after i let off the throttle!!! i go home furious and pull the codes again. what do i get 0101- maf! 0171-system too lean bank 1 and system too lean bank 2 ! WTF!! can anyone help me out? not to mention i need to get an inspection and they wont overlook the engine light.
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[Canada]

Your lean codes are pry set because your MAF isn't reading right......which could be from a leak in the intake tubing.

[keliente@pcmforless.com]

Originally Posted by CRASH00527

hey guys i need some serious help. i had computer codes pop up on my car before. the first time is started was at th track about 3 weeks ago. half way down the track on my 1st run, my engine light went on. i pulled codes 0101-maf and 0420- pass cat. so i put new magnaflow high flow cats and flowmaster exhaust catback and slp maf. i cleared the light. now its good. i go for a ride on the highwaya few hrs later and decide ..... let me take for a good run. than you know what happens!!! CHECK ENGINE light pops back after i let off the throttle!!! i go home furious and pull the codes again. what do i get 0101- maf! 0171-system too lean bank 1 and system too lean bank 2 ! WTF!! can anyone help me out? not to mention i need to get an inspection and they wont overlook the engine light.
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They CAN'T overlook the light, it plugs into the computer and it is going to automatically fail you whether the inspector wants to pass you or not.

I think I mentioned this in your other thread - you need to take a good look around the MAF area. Is the wiring corroded? Is the connector corroded? Is there a tear in the tubing anywhere? Did you forget to hook up a vaccuum line etc? If the system is too lean then there is excess unmetered air....