Emissions v.s. Tune
This is a discussion on Emissions v.s. Tune within the General Help forums, part of the LSx Technical Help Section category; Where I live I thought they did the emissions sniff test but as it turns out they only do the ...
10-09-2006, 05:33 AM #1
Emissions v.s. Tune
Where I live I thought they did the emissions sniff test but as it turns out they only do the OBD-II emissions test, so my question is this.
I have a predator tuner that will cancel all my EGR & O2 P-codes and I want to know if I will pass emisssions if I cancel the codes or will my OBD-II rat on me and tell the test computer what I've done. I also want to get rid of my EGR equipped intake manifold and go with the LS6 "no EGR" model as well as put on some headers. Can I get away with that by canceling the codes? (again I mean will I fail emissions) I know I may have to deal with visual inspection issues but right now my question is purely emissions related.
10-09-2006, 05:56 AM #2
If you just "Delete" the code your computer will show an N/A to the scanner as it does not have enough data to give a report. You would have to have a true custom tune where the sensor is omitted from reporting any errors. So yes, the computer will tell that codes have been cleared and not let you pass an ODBII test.98 T/A: HPE 5.3 Heads, 238/242 113 cam, Kooks 1 7/8 stepped LT headers, Custom Y pipe, Cut out, Borla, NW 90MM TB, FAST 90MM Intake, TB Bypass, Under Drive Power steering and Crank, 150 Dry NOS, Yella Terra rockers, 3400 TC, HPE tuning,
10-09-2006, 05:22 PM #3
I ran into a similar issue, If your light is on or even if its not if its throwing codes or hasnt cleared itself then the computer will pick it up and give you a not ready. You will have too get the codes tunned out or deleted from your comp and then like the pcm cycle a few times and it should be good.
J2001 SS, Its not the car its the Driver that matters....
10-10-2006, 04:22 AM #4
10-10-2006, 10:05 AM #5
10-11-2006, 04:22 AM #6
10-11-2006, 10:15 AM #7
Yes most tune them out because of LT's and ORY...or they fried their cats and don't want to replace them.
As far as if you'll pass emissions or not I don't know. It depends on what diablosport has the predators programmed to do when you tune the codes out. If they have them programmed to read n/a then you won't pass...best thing to do is call diablo and ask.
You can always have the smog shop do a pre-test for a extra fee...and they'll tell you if you'll pass or not before they actually test it.
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