I don't know if that's a good indication these days. The feds insist that
the engine run leaner than they did in the old days when we used pipe
discoloration to judge rich/lean.

"L Bader" > wrote in message
...
> Chuck -
>
> Thanks for the lead. The car has ~43K miles on it. Having owned it
> for only 6 months, I've not changed the fuel filter.
>
>
> Leon -
>
> My reasoning for the "running lean" assessment is due to the blueing
> verse s bronzing of the RB 4-1 stainless header.
>
> I agree that changing the filter is a first option over adding a
> resistor of unknown size...
>
> - L
>
>
>
> On Thu, 28 Oct 2004 23:59:05 GMT,
> (Leon van Dommelen) wrote:
>
>>L Bader > wrote:
>>
>>>On Mon, 25 Oct 2004 23:30:33 -0400, "chuckk"
> wrote:
>>>
>>>>What for?
>>>
>>>After replacing the intake, building a cold air box for said intake,
>>>and a high-flow exhaust from manifold back, I seem to be running a bit
>>>lean...
>>
>>Why do you say so? You should be putting only a small percentage more
>>air through the system as usual.
>>
>>Apparently, the JR uses a resistor in the air temperature circuit to
>>trick the ECU in adding more fuel. You could try the same with a much
>>smaller resistor. I do not remember what the resistance of the JR kit
>>one is, (if I ever knew,) but you could try the power forum on
>>miataforum.com.
>>
>>Following chuck's advice in insuring the proper operation of the
>>OEM system first seems like a good idea, though. You hate to
>>have to take out the resistor later again after you replace the
>>fuel filter or fuel pump, say.
>>
>>Leon
>>
>>>>It's likely that springing for an aftermarket ECU is in your future.
>>>
>>>I figured as much, but thought I would ask...
>>>
>>>Original question below:
>>>>>
>>>>> Does anyone have a reasonable fix, aside from purchasing the FM-ECU ?
>>>>>
>>>
>>>'97 STO, "Chouki"
>>>
>>>// Change TEJAS to TX to reply via eMail //
>
> '97 STO, "Chouki"
>
> // Change TEJAS to TX to reply via eMail //


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