O/R H-pipe installed. No CEL?!?!?!?!

[LucasMelo]

Hey guys....
Had a shop install a O/R H-pipe last friday, Car sound awesome!!!
If you have not done it, DO IT NOW!!!!
Question is.... I do not have a CEL light!?!?
Already drove the car for almost 100 miles....
I bought the car in January. It's a 2001 Bullitt and the owner said that the car was bone stock. (looks bone stock).
How can I tell if my car has been tunned ???(CEL turned off)
The bulb is working because it lights up when I start the car.
What else could it be?????

Thanks....

 

[RoadconeTuning]

took mine 174 miles to come on with an offroad prochamber, it WILL come on, just give it time.

 

[lvmustanggt]

don't worry it will come on. I had to use MIL Eliminators.

 

[mustangman9812]

must be a 99-up thing. When I put my O/R X-Pipe on my car it never came on

 

[timeless2]

Did you reset the PCM after the install?

 

[mustangman9812]

me? Yes, and its been on my car for 8 months now LOL

 

[thomas91169]

it all depends on alot of variables for the CEL to go off. It goes off because the rear/downstream o2's main (and only function) is to make sure the catalytics are still working, the ecu does this by cross referencing the data with the front o2's, if its far off the ecu knows they are working, if the numbers are the same then the ecu knows the cats are not working. MIL's work by faking the correct voltage the ecu needs to see to realize the cats are still in place.

i got a CEL as soon as i turned my car on, even with MIL's in place. i had to disable the rear o2's in the tune (DiabloPredator) and disable all the obdII checks for the rear o2's.

 

[mustangman9812]

i guess it all depends on the car LOL

 

[Black'02]

Has the 100 miles you drove so far been a bunch of short trips? If so the computer may just be attributing the emissions to the cats not being warmed up yet. Im sure if you keep driving the car the light will eventually come on.

 

[Twista]

it takes awhile for mine to come up. Just drive it hard and rev it high.. thatll make it come on super quick.

 

[LucasMelo]

They were short and long trips..... It's my DD.
And I did ran the bullitt at WOT!!!!! (More than a couple of times..... heheh )
I'll reset the "computer" now and see what happens.
So, there is no way to know if the car has a tune????

Thanks guys....

 

[Twista]

;] Just keep driving. Itll come on sooner or later. I just unplug my negative battery whenever it comes on.

 

[bonestock87]

As black-02 states, a bunch of short trips over several days will keep it from coming on. Installed mine a few months back and it took over a week before it came on. Then it finally did. Got the MIL eliminators and no CEL since.