Ford Mustang Forums banner

1 - 8 of 8 Posts

·
Registered
Joined
·
93 Posts
Discussion Starter #1
I have a 2014 Mustang Cali Special with dual On3 twin turbos. I bought it with a blind tune. Driven the car 600+ miles with a couple passes down the strip and the O2 sensors are still not going ready, and I have a reject sticker. I have a simple scanner and I'm getting live data from the sensors but I need they are not completing the drive cycle readiness. I live in Western Mass are there any tuners out there that can help me figure this out? I took the car to the track on Wed and I now have a misfire. Not sure where to start...
 

·
Registered
Joined
·
93 Posts
Discussion Starter #3
No cats. Car was tuned by Dan at Real Speed in NY. When they were returning my phone calls they said the tune had the O2s active.
 

·
Registered
Joined
·
1,803 Posts
without cats the rear o2's are probably turned OFF so they'll never complete the readiness cycle. You need the rear o2's turned on (and likely use cats or a "another method") for it to complete the readiness check.
 

·
Registered
Joined
·
93 Posts
Discussion Starter #5
I'm getting live data from the O2 sensors when I plug in my cheap hand held scanner. If the rear O2s were turned off I don't think I would get and data. I think I need to start data logging. What do I need to data log this car?
 

·
Registered
Joined
·
93 Posts
Discussion Starter #7
The tuners verified they are on. How do I determine if the heat range is adequate?
 

·
Registered
Joined
·
1,803 Posts
I'm getting live data from the O2 sensors when I plug in my cheap hand held scanner. If the rear O2s were turned off I don't think I would get and data. I think I need to start data logging. What do I need to data log this car?
Likely getting data from the front o2's, which I believe are wideband in these cars (they are on the GT500's, i know that much). When you remove the cats, tuners will turn the rear o2's off so the car doesn't throw a code. the fronts are still ON and needed for fueling.
 
1 - 8 of 8 Posts
Top