I have a 2002 mustang gt and I need to pass echeck. The car has a stock h pipe. The problem is someone previously turned off the cat monitors in the computer. I learned this when iwas at the echeck station. The cats come up as N/A when I scan the computer. I was thinking I could buy a handheld tuner and upload a canned tune to enable the monitors and then return back to the current tune. Is this a good way to go about this or is there maybe an easier way I'm missing?
That's probably going to be the easiest way to go about it. You could buy a new ECU, but then you'd have to get the PATS tuned out anyway with a handheld or by the dealer.
Thank you for the response. Im assuming any canned tune will keep all monitors in the computer on? I'm guessing any of the handheld tuner companies wouldn't won't any liability associated with turning emissions systems off.
When I bought the tuner for my 11 GT they asked me if I wanted the monitors on or off. This was through American Muscle, and Lund when I bought one of theirs as well.
I was looking at a used accel tuner to possibly buy. It has preprogrammed tunes and is 50 state emissions legal so it sounds like any of the tunes should work. I appreciate the responses. Its always nice to get additional feedback from others.
With a SCT on your '02 you can turn the rear 02's on or off. That's it. If you turn them on and they aren't present it will give the same error. I think if you use some of the MIL eliminators they simulate them still being there. It's about $20 from American Muscle and should accomplish what you're trying to do.
*Edit;
I didn't see them on AM but here they are. I also saw cheaper ones on ebay.
Make sure any used tuner you buy is unmarried/unlocked.
@Patientzero, I don't think the MIL eliminators would do anything for him if the O2 monitors are turned off in the tune.
In reply to iammclovin804 :
You're probably right but if he has a h-pipe with no rear o2's then he's still going to have a CEL. Might need the MIL eliminators either way.
The stock h pipe is on the car. My scanner shows N/A for catalyst monitor so I dont think the mil eliminators would do anything. If a tuner is married does that mean it will not work on any other cars? If I found someone local to me with a tuner I couldn't just have them upload their stock tune into my computer?
You wont find mil eliminators from any reputable source, they are an emissions defeat device and companies caught selling them are subject to big fines from the EPA.
You might be able to just have a dealer relflash to stock.gwtting a tune that disables the o2 is getting hard though.
You'll need to log in to post.
