That would account for the surging, I was very used to lean surges on my car
when the carbs were setup wrong.

Since the  GTS is fuel injected, there would probably be a happy medium, as
I don't own one myself I don't know where to adjust but it's always better
to run rich than lean. Lean can hurt stuff, melt pistons, plugs, heat
warping heads or whatnot (not that I've ever seen any of these symptoms
myself).

Rich, well, it could foul plugs and plug the catalytic converter.

Speaking of catalyst.. since the fuel injection will compensate for mixture
and flow changes, will the exhaust flow better if one was to remove the
catalytic converter?

soon to be GTS owner

----- Original Message -----
From: "Boman, Jeff" <[EMAIL PROTECTED]>


> Thanks for the response.  I learned something quite interesting about my
'93
> GTS injection system this past weekend and I am inclined to agree with
your
> statement.  If I set the CO to 2.0 ~ 2.5 at idle and then increase the
RPMs
> to 3K ~ 3.5K the CO drops to 0 ~ .5, which is much too lean.
>
> Jeff B.
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
>
> Personally I think 2.0 ~ 2.2% CO is still too lean. Watch your HC and see
> what it does, if the HC drops as you raise the CO, you are too lean. Some
> people do adjust for minimum HC and take what they get for CO. Obviously
> several schools of thought on CO/HC, and we wont even get into CO2 and O2.
I
> think 4% is a better number for all around throttle response, fuel mileage
> and fast warm ups.
> RSRBOB
>

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