Quote:
Originally Posted by fastdonkey
yeah, pretty serious. I was just wondering if the service engine light would be illuminated since the dp i have in my closet is not catted and the cobb one is. I wasn't sure if they programmed the software to work with catless/race pipes since theirs is catted. if you have an anwer then i'd really appreciate it. thanks.
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Technically the O2 sensor will throw an SES light if you use a non-catted dp. If you use a high flow catted dp the light will not get thrown as the O2 sensor will not detect emissions outside the programmed scope...having said that, I hear that a lot of times the high flow catted dp's end up failing emissions in about a year anyways, so I just bought non-catted.
The Cobb AP, and many of the piggyback tunes, will ensure that the SES light does not come on if you go non-catted. Typically they do this by keeping the O2 sensors in a perpetual Not Ready status (Not Ready, Ready, Failed). If you have to pass an emissions test you very well could fail it because Not Ready and Failed are both assumed to just equal fail.
For emissions tests you will either have a light check (easiest to pass) where they simply check the dash to see if the light is on, a ODBII check where they see how many are Not Ready/Failed (In Texas you can only have 3 Not Ready/Failed sensors) so it is possible to pass depending on the other sensors, and then you have the actual emissions testing. This is typically done in California where they actually test the emissions off the tail pipe and there is sadly no way to dupe it that I know of.
After having said all of that if you had an N54 car there is a DP Fix which will allow you to pass emissions test via the CAN check. Doesn't help you since you're on the N55 platform, but something to keep your eye out for in case Burger Tuning decides he wants to swing for an N55 version.