[s-cars] Dyno Day /O2 sensor question (AGAIN!!!!)

[Joshua Van tol]

I can't think of a reason why you couldn't use the stock sniffer tube  
location.

On Feb 11, 2006, at 2:35 PM, Dave Forgie wrote:

> Sorry but it cut the following off (AGAIN). SO third time lucky??:
>
>> From what I have been told, they use a "sniffer" tube stuck in the
> tailpipe.  When I told them that we all run cats, they said the A/F
> results won't be correct but they will be able to tell if we are  
> rich or
> lean (but not the exact ratio, I guess).
>
> Question: For those that have done dyno days, can the OE sniffer tube
> just downstream of the turbo be used to get the correct A/F ratio  
> OR do
> we really need a second "bung" downstream of the O2 sensor? I hope the
> sniffer tube can be used because all but one of the seven of us signed
> up are running OE down pipes (the seventh has a Gen IV Stromung)  
> and the
>
> likelihood of us all running out and getting a bung installed before
> March 11th is slim.
>
> Thanks in advance.
>
> Dave F.
>
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