MAP signal dampening

[Tom Sharpe]

Programmer wrote:

> Advance is the big key--but that's just MO.
> Here's the rule of thumb I've used:
> Cam duration of 270--set initial to 12BTDC 700 RPM Idle
>                              280--set to 14 BTDC    1100 RPM
>                             290 --set to 16 BTDC    1200 RPM
>                             300   as high as 19 BTDC   1400 RPM
>                            310    18 to 20 BTDC.   1500 RPM
> Limited by hot starter kick of course <g>... Limit total to 34 if
> compression is raised. Higher compression can stand higher
> duration and lower idle RPM as base. Takes a lot of playing around--but not
> too much to nail it right. Optimum advance varies with engine design...but
> should basically be dialed all in around 3500 RPM.

Do you need to set the timing back at tip-in to prevent ping?? (I would think so
- 20 deg at wot at 2k rpm seems a lot.)  rgds Tom (PS Mine does)


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