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Old 02-18-2012, 10:00 AM
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compu_85 compu_85 is offline
Waiting for his Model 3..
Join Date: May 2008
Location: Springfield VA
Posts: 5,174
Originally Posted by whunter View Post
Emission gas readings are irrelevant, the only EPA spec for 1985 and earlier is opacity.

Your vehicles failed opacity??
No state can legally fail these engines for any other reason.

I suppose that's true, but that's kind of a tricky response... "They can't tell it's broken" vs. "They don't care". It still violates EPA regs. Weather or not NOx is actually bad for the environment is another debatable topic.

Check out this thread:

EPA Test of the Trap Ox on 85 617s

I'd love to get the NOx differences on my car... but when I started testing the EGR I think I misplaced all the vacuum lines for it

I would venture that most 617s running around today have horrible tailpipe emissions compared to when they were new... retarded timing from stretched chains and worn injectors probably make a ton more PM and HC.

1991 350SDL. 230,000 miles (new motor @ 150,000).

2013 Fiat 500E. 20,000 miles, 80 miles at a time.
2012 Passat TDI. 95,000 miles. More space, power, and fuel economy than the Benz
2004 Touareg V10 TDI. 150,000 miles. One of 450.
1999 Jetta TDI. 310,000 miles.
1992 Jetta ECOdiesel. 156,000 miles. 1 of 48. Sold.
1991 Jetta ECOdiesel. 430,000 miles. 1 of 700. Sold to VeeDubTDI, totaled in front of our house
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