Strange Timing Curve

[matt59]

I have a 90 Daytona VNT(Garret Tll Turbo). First let me say that it runs very good.

The problem I have when under boost(12*), Wide open Throttle and 3200rpm under a load the timing shows 16btdc through the Tech 1a that I have set up for a manual trigger snap shot. I notice the timing backs off as the rpm goes up but only when boost is present. When I back off the throttle slightly I can feel a little more power before it starts to decel. My base timing is 12*. The O2 reads .99 volts (Rich) and the knock sensor is at .oo3(wehre it usually stays) The knock retard remains at 0*. This to me is very wrong. My thought is the computer is misinformed because of the T2 turbo and vac routing.
Anyone else have an idea on what going on here?

[Shel-Game]

The WOT timing maps are more conservative than the part throttle maps. The reason is, that the computer tries to get close to stoic at part throttle, at WOT it goes by pre-set PW only (for a much richer mixture).

Stoic + advance + boost = boom

[matt59]

Quote:

Originally Posted by Shel-Game The WOT timing maps are more conservative than the part throttle maps. The reason is, that the computer tries to get close to stoic at part throttle, at WOT it goes by pre-set PW only (for a much richer mixture). Stoic + advance + boost = boom

Is there any way to adjust it?

[Shel-Game]

Sure, use D-Cal or CHeM to edit the cal and burn your own chip...