06-05-2018, 06:54 PM
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#13 (permalink)
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Enthusiast Member
Join Date: Feb 2017
Location: Bay Area
Posts: 320
Drives: 13 370z Black M6
Rep Power: 9
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Quote:
Originally Posted by wanker
I understand that if you live in an enhanced smog requirement area (most of California), the ASM2 emission test checks the vehicle current tune on the ECU against the manufacturer's tune. Thus, if there are dramatic changes to the engine timing etc. you can fail the test.
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Interesting, I did not know that as I've not heard someone fail the smog test due to a tune. I wonder how if they'd be able to detect a custom tuned stillen kit (assuming through obdii)
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