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Help!

2K views 32 replies 6 participants last post by  4.0nativepower 
#1 ·
I have a 2005 4.0, it keeps giving me the code p0175. I took it to my mechanic and he couldnt find any problems with the car. He recommended me to get it tuned since the code says im running too rich. He also told me to take it to the dealer to get the computer reflashed. What do you guys think?
 
#4 ·
If you have installed fuel injectors with a higher pound rating than stock it will need to be tuned. The computer will be providing fuel based off the stock injector size. If you have bigger injectors it will supply more fuel which will then be picked up by the o2 sensors so the obd2 system will think there is a problem when the only issue is it's not tuned for the injector size. If this is the case you could either go back to stock injector or have it tuned. This sounds like what the tech is saying since they did not find a problem like a injector stuck open/leaky , excessive fuel pressure or faulty o2 sensor.


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#30 ·
I ended up buying the Bama Rev-X tuner for my 05, i installed in 2 days ago, and let me tell you it woke my mustang up. It just tears up the road now haha. Seriously though it really improved the performance on my car. Im on the 87 octane performance tune right now i will probably switch to the 91 octane performance tune the next time i pump gas.
 
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