Adjusting the Ignition Timing of a NA ICE to Spec' for the Atmospheric Equivalent

of SeaLevel Conditions that Actually exist @ the Alt @ which that NA ICE is being Tuned

For, is Not Tampering > It is the Only Truly Correct Adjustment ~

        Most, if not all, of todays Modern NA ICEs DoNot have Manual Adjustments Available

Due To the BuiltIn ability to make this Adjustment OnTheFly Via OnBoard Sensors & ECUs ~

        For Example, the 2001 EJ25 in My VDubaru has an Atmospheric Pressure Sensor which

when in concert with the IntakeAirTemp' Sensor, Allows the ECU to make FuelFlow & Timing 

Adjustments Based On Pressure Altitude, Not Just Actual Physical Alt' ~ The Sensor that it 

DoesNot have, that I wish it did, is a Hygrometer, as that would give it the info needed to be

able Know the Density Altitude for which it needed to adjust ~

        DigiJet & DigiFant were Headed in the right Dir' with their AFM & IAT but Fell Short by

Not Adding a Atmos'Press'Snsr & Hyg' ~

                                                        ORR ~ DeanB

On 3 Jul , 2016, at 7:38 AM, Dennis Haynes wrote:

> Ignition timing also effects emissions, especially the formation of NOx. I
> know many don't care but that is why our engines are low compression and
> de-tuned. The only thing our engines have besides the low state of tune to
> control NOx is the 3 way catalyst and O2 sensor system. VW did what they
> could to save money including not adding EGR. Tampering with settings is a
> primary reason that almost all adjustment capability has been taken away
> from current vehicles. 
> 
> Dennis
> 
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> OlRivrRat
> Sent: Saturday, July 2, 2016 9:51 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: GOWESTY AFM no start problem
> 
> On 2 Jul , 2016, at 9:58 AM, Dennis Haynes wrote:
> 
>> I wouldn't. For most trips he will be heading down to sea level.
> 
>        Are You Sure of That ~ When I asked DJ >
> 
> " @ What Altitude do You Live & Drive Mostly ~ "
> 
>        His reply was >
> 
> " Altitude is 1400' to 3500'. We drive down to the Connecticut Upper valley
> and a over to the White Mountains. "
> 
>        Is this a GoWesty 2.2 ~ If So, What Timing do they Recommend @ 0'
> ASL ~ Add Alt'Corr' to that ~