When i bought my truck the owner that had it had straight pipes on it, No cat's and No mufflers. So the check engine light stayed on and threw a code that identified low pressure running through the o2 sensors. The truck runs fine but not 100%, So i put some after market mufflers and that still didnt fix the problem. I have priced to cat for it and have gotten prices ranging from $400 to $2000 FOR 2 CATS! I found a guy here in jax fl that specializes in computer reprogramming for fords, and he basically told me that he can reprogram my ecu for $200 it will bypass the o2 sensors, change my shift points and can tuneup my air/fuel mixture. Just wanna know if any one has had this done.
I know the mechanic's there come highly recommended and they warrenty all there work so im not worried about that.
Even talked to a guy that got his ranger done and he sayed it was like night and day.

 

you could also purchase mil eliminators to take care of the problem. you wouldn't have to mess w/ the tuning that way, either.

 

Its pretty common to turn the rear 02s off

 

Two Magnaflow high flow cats (#94306) should cost you $100 bucks roughly. It will make your truck sound better and run better and they will not trip the CEL.

 

Friday afternoon i took my truck to http://www.reinhartautomotive.com/ located here in jax Fl, The owner dennis downloaded my current software and began to reprogram it using http://www.sctflash.com/ at first the hardware he was using gave him some problems but eventully we got it working, he wrote a new program that eliminated my top speed limiter ,canceled my o2 sensors, advanced my timing and upped my spark so that i could only run 93 octane in the truck (which i have not problem with since i drive the dually most of the time) and also adjusted my transmission so that at full throttle is shifts a whole lot better, and re adjusted my speed o. The difference is like like night and day, i went there to get rid of a CEL, and came out with a whole new truck. i could of bought MIL elimators or got a set of flowmaster cat's but instead i went to http://www.reinhartautomotive.com/ to get a reprogramming that set me back about 200 bucks and i will say is well worth it.