05stangkc

I Was Pointing Towards The Noise App I Guess I Should Have Been Specific.

There is Also Talk on Driveshaft in The Thread!

No Pun Intended For The Finger Loss & Pointing!

Kc

m05fastbackGT

I believe you misinterpreted my statement, so I'll clarify... What I intended to say was before your car was shipped to Europe, the previous owner used a hand-held tuning device to re-flash your vehicle's ECM with a calibration tune designed to run Long Tube headers... Once the vehicle was re-flashed, the original stock calibration tune was then transferred into the hand-held tuning device where it is kept stored in the device's memory until in the event the vehicle requires being returned to the stock calibration tune...

Therefore, unless the previous owner of your car included the hand-held tuning device which stores the original stock calibration tune within its memory, you will not be able to re-flash your vehicle back to the original/stock calibration, if in the event it should ever become necessary... I know this thru personal experience, as the previous owner of my car misplaced his hand-held tuning device which still has the original/stock calibration tune in the device, so if in the event I would ever need to return my car back to the original stock calibration tune, I would then have to take my car back to a Ford dealership and have them re-upload the original stock calibration tune into my car's ECM...

In the meantime, I hope this clarifies any misinterpretations on my part... And I'm also very pleased that your car is now back up and running fine since replacing the front 02 sensors... Congrats!

krcn

Hello everyone!

I finally managed to fix my o2 sensors for good and I thought it might be helpful for someone dealing with similar issues.

I spent roughly 2 weeks of non stop research about long tubes on different cars, o2 sensors, BBK, moisture, sensor placement etc.

As you probably know, running BBK long tube headers and an off road x pipe deletes the cats so you WILL get 2 codes. Getting rid of them is quite simple, just get defoulers or a tune to disable rear/downstream sensors on both banks.
The whole journey starts when there are problems with your upstream sensors.
Example error codes - P0155, P2627, P2254, P2251 and many more that will indicate faulty sensor.

Your o2 sensors MIGHT be bad if you see P2254 and P2251, but most likely they just swim in moisture that cause them to not read the air/fuel ratio properly.
BBK long tubes o2 holes are positioned in a so bad angle that the moisture gets to them and cause those errors.
How to fix it? Place them on a 45 angle facing transmission, a little bit closer to the top or use o2 sensor heat sinks. It won't make your readings bad and for sure it will secure the sensor from getting wet.

Sometimes your o2 sensor extensions could go bad, so just swap them and check if errors follow up with the bank they're currently in.

In my case P2627 and P2254 indicated bad o2 sensors, I replaced them with used ones, deleted codes and P2254/P2251 showed up right after driving around 10 kilometers.

Hope this will help and someone will manage to fix their sensors and BBK headers. I was so desperate I wanted to sell them and buy original headers with cats but this time I won
Hit me up on priv if you've got any questions.

PS: Fix applies to both 3.7 and 5.0 engines.

Bert

thanks for posting

m05fastbackGT

Thanks for keeping us updated and glad you figured out a solution regarding the front 02 sensors.

Also, just wanted to let the OP and everyone else know that I went ahead and merged "The dealing with 02 sensors on BBK long tube headers and "02 sensors and long tube header issues" into one thread ...

The reason, both threads were pretty much directly related to one another and didn't think it was necessary to have 2 or more separate threads floating around that are directly related to the same topic...
Therefore, it should now be much more convenient and easier to locate all troubleshooting steps in one place.