
Originally Posted by
S4BlackCab
All-
Did some searching and couldn't come up with anything; pretty sure this is an easy answer and hoping the Mid-Atlantic can chime in, specifically Northern Virginia folks.
Considering adding an APR HFC/DP to my allroad (B8.5) and wanted to know if this would have any impact with passing Virginia emissions? No APR tune as of right now, but that may change in the future, if so, does having a tune + APR HFC/DP have any impact on passing emissions?
Thanks in advance!
I'll offer what I can -- I ran a Test Pipe on my B6 A4 and never got in trouble (was tuned for it). The APR file I had ensured I wouldn't throw an O2 sensor code. With a HFC installed, you will likely still be fine and the tune should make sure of that. The OBDII scan that run emissions tests won't know the difference. As a part of the inspection checklist, there is a step to check for any emissions alterations, but I was never flagged. I don't even think the gas station I went to lifted the hood.
The only caveat I'll provide is that there have been RapidPass stations on offramps in this area and I think that does more of a "sniffer" style check on your emissions (
see here for thread). If you fail this on-the-spot check, I think you'll need to go somewhere to get tested and pass in order to renew your tags. You're not running a Test Pipe, so I would guess you'll be safe. I sold the car before these tests came up, so I cannot confirm if my car would have failed. They are not super common; just a heads up that this style of spot-checking would be your only risk. I had seen these stations posted up on my King St exits from 395 once or twice.
hope this helps!
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