Pelican Parts Forums - Injection Timing Question and Ignition timing too

I'm getting pretty deeply into tuning my newly rebuilt engine.

First what is it:

1982 SC block with 100mm Nickies, JE Pistons (10.05:1 compression ratio as cc'd)

Heads: '82 SC heads twin plugged Supertec valve springs, Ti retainers, 36 mm ventiport inserts, new valves and guides.

Stock rods with ARP rod bolts

Hargett ITBs with 46mm butterflies, Ford Motorsport 39lb/hr injectors, Toyota Tundra COPs, SSIs and a Monty 2 in 1 out muffler.

Cams- DC 60 with 106 lobe centers.

EFI- MoTeC M800

Now my 2 questions:

1. The MoTeC allows me to specify either the time fuel injection begins or ends in degrees BTDC. I bought the MoTeC used and the program that was in it had injection ending 320 degrees BTDC. That seems awfully early to me. I moved to 270 degrees at idle to 200 at 7500 rpm redline. I think I could keep going closer to TDC: maybe 250 at idle to 160 at redline. What do you think?

2. I had used Jamie Novak and brads911sc timing comments on their build threads, but both of them are using distributors. I have more flexibility with electronic ignition. I found these graphs on Steve Wong's website.

http://forums.pelicanparts.com/uploa...1279400053.gif
http://forums.pelicanparts.com/uploa...1279400069.gif

My engine feels like it wants a lot more advance than I am currently running. I am running something that looked like the WOT curve from Steve, but with Jamie and Brad where they are I hesitate to go 40 degrees of advance. I'm using MAP as load I don't know what load is on the graphs on Steve's website.

Is the only thing to do spend time on the dyno? I tried going to use much as 30 degrees on the road the other day, it is more powerful, but the lambda went from 0.90 to 1.08; so I added fuel, but I worry how much timing is safe with twin plugs and 93 octane fuel and 10.05:1 compression and my DC 60-106 cam?

Thanks in advance for any help,

Richard