[Shotimes] Re: 93 SHO Failed Texas State Inspection

[Alan Fanning]

But were they actually measuring NOx? Only the new dyno tests do here  - the
old pre-dyno tests did not.

    Alan

wrote:

> On the "tailpipe sniffing" tests in IL & KY with my '89, it always passed
> very easily. The last couple of years ('97 & '98) were with over 150K miles,
> and a BOS with an LPM.
> 
> Ron Porter
> 
> -----Original Message-----
> From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
> On Behalf Of Alan Fanning
> Sent: Sunday, April 10, 2005 5:32 PM
> To: SHOtimes
> Subject: [Shotimes] Re: 93 SHO Failed Texas State Inspection
> 
> Overall experience in the BaySHO club with current California dyno-based
> smog tests is that the non-EGR cars have a harder time passing NOx testing
> vs thpse that have EGR. Some have required pulling the SPOUT connector in
> order to pass.
> 
> Personally, I (and others) have found that a non-functioning EGR system
> (e.g., plugged EGR passages in the intake) is likely to result in failing
> the test, which I take as an indication that non-EGR cars would also have
> trouble given the purpose of EGR being to reduce NOx emissions.
> 
>     Alan