Hello all, my first post here, hope you guys can help me. My 06 GT has a whipple supercharger, custom tune, catback exhaust, xpipe, free flow cats, dynoed at 471hp. It just failed an inspection, because of 2 Monitors "not ready" (Cat, Evap). I spoke to the shop that tuned my car and they sent me a tune to download, which I did. After driving 70 miles, the two monitors were still not ready and it threw a code po351 pertaining to my coil, circuit malfunction. I hooked up a scanner and it reads 9 out of 11 monitors are N/A. The shop sent me another tune, which got rid of the code, but my monitor status has not changed, thats even after another 70 miles of driving. The shop insists its a tuning issue. My question is; is it a tuning issue? or is my OBDII not reading my monitors (9 0f 11 N/A) for some reason. Any help would be appreciated.
06 Mustang GT Failed inspection (emissions)
gsxr98
1 - 12 of 12 Posts
Hello all, my first post here, hope you guys can help me. My 06 GT has a whipple supercharger, custom tune, catback exhaust, xpipe, free flow cats, dynoed at 471hp. It just failed an inspection, because of 2 Monitors "not ready" (Cat, Evap). I spoke to the shop that tuned my car and they sent me a tune to download, which I did. After driving 70 miles, the two monitors were still not ready and it threw a code po351 pertaining to my coil, circuit malfunction. I hooked up a scanner and it reads 9 out of 11 monitors are N/A. The shop sent me another tune, which got rid of the code, but my monitor status has not changed, thats even after another 70 miles of driving. The shop insists its a tuning issue. My question is; is it a tuning issue? or is my OBDII not reading my monitors (9 0f 11 N/A) for some reason. Any help would be appreciated.
It is most likely tune related. Why you have so many monitors not ready seems odd. The convertor and evap monitors take the longest and more specific kinds of drive cycles for them to read ready. It is possible that during your 70 miles it may not have met all the parameters for a proper drive cycle. But why you have so many that read N/A is not normal. Many of the sensors may just be turned off. Which shop is doing your tuning? I have a Shelby tune but use a Lethal Performance/Lund Racing tune for my emmisions testing. Never had an issue except for when I just needed to drive the car around some more.
Thanks for the reply Boss. Jannetty Racing in CT is doing the tune. The closest Mustang specific shop is 2 hrs away, Mustang Magic, but they are the ones that did the original tune and the car ran like ****, they also put in a Steeda 10 rib belt kit on the car and I'm on my third belt (fraying). I'm not sure of their work. Evolution Performance is about 3 hrs away, I hear good things about them. But both shops tell me that I have to go with their tunes, which I have to start over and shell out 600 bucks. I'm still working with Ted (Jannetty Racing) to see if we can solve this. I'm confused, I have never heard of 9 out of 11 monitors going N/A.
Joined
·
22,072 Posts
How many times did you shut off and restart the car in those 70 miles? The systems require not just mileage to be ready, but engine stop/start events.
Joined
·
2,455 Posts
Ford Motor Company Driving Cycle
I just took the long way to the highway, drove 15 miles out, then back and took the same long way home. Gave plenty of various types of driving. You basically want to cover every type of driving. This will include being somewhat of an asshole on the highway by both driving aggressively, as well as being THAT guy in the far right lane going 40mph for a few miles.
I just took the long way to the highway, drove 15 miles out, then back and took the same long way home. Gave plenty of various types of driving. You basically want to cover every type of driving. This will include being somewhat of an asshole on the highway by both driving aggressively, as well as being THAT guy in the far right lane going 40mph for a few miles.
Joined
·
227 Posts
The evap won't complete unless fuel is 1/4 to 3/4 of tank and above like 40 degrees or something like that. You also must drive gently to not slosh the fuel around creating to much...well...evaporation.
The hardest one for me was the accelerate to 60 at 3/4 throttle then coast down to 20 without touching the brakes three times in a row. Now repeat with the overdrive off if you have an auto. That sets the misfire monitors.
I have never understood the cat monitors how they work, maybe someone can chime in. I know if you disable the rear 02 the cat and cat heater will not go ready.
I may be wrong but i believe that all the monitors will set within 1 drive cycle otherwise dealers wouldn't be able to fix some major issue and put it on a drive cycle dyno to get it out the door.
The hardest one for me was the accelerate to 60 at 3/4 throttle then coast down to 20 without touching the brakes three times in a row. Now repeat with the overdrive off if you have an auto. That sets the misfire monitors.
I have never understood the cat monitors how they work, maybe someone can chime in. I know if you disable the rear 02 the cat and cat heater will not go ready.
I may be wrong but i believe that all the monitors will set within 1 drive cycle otherwise dealers wouldn't be able to fix some major issue and put it on a drive cycle dyno to get it out the door.
Joined
·
2,067 Posts
I had to drive mine at least 6 different days to complete the monitors. Pain in the ass to finally pass inspection.
Joined
·
5,230 Posts
Yup drive cycle can be a bitch all the stars have to align.
1 - 12 of 12 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
