Ballpark IGN timing for 6.0L turbo

[itsdaveonline]

This is a fairly open ended question and likely difficult to answer 100% without dyno. Almost a crystal ball situation. But here we go:

Just ball parking, how do you feel about this ignition table for a 6.0L ls2 with 7874 t4 turbo, 93 octane. Expecting 6-7#. Does that look at least half way optimized to get it to light up? It seems to spool decent. But im all ears if there's any tips to get it to light off better.IGN EXAMPLE.hpt

[kevin87turbot]

That's a good, conservative base spark curve. You should be able to add a couple of degrees back to it with only 6-7 psi boost.

[itsdaveonline]

Considering this car is manual. Feel like maybe it's worthwhile to pull some some ignition from 3000RPM and under? Supposedly the lower ignition with slightly fatter mixture helps with spool in stick cars?

Any merit to that? I'm also noticing other turbo tunes have MUCH lower ignition in that same area.

[kevin87turbot]

You're not likely to see any significant boost below 3k rpm. I would treat it like an NA engine at low rpm. OE timing tables will get you close.
You'll only want to retard the timing if you have a 2 step rev limiter. Otherwise, you'll just make the engine lazy.