Originally Posted by kiddsm95
So lean AFR's at spool up, and leave the timing as is?
There are many different theorys/practices for AFR tuning.
For a Lean Spool type of map:
Idle - 14.7
Spool - 12.5
WOT - 11.0
This replicates the Lean Spool feature the Evos have had since the Evo5.
I think the theory behind it is by running lean you have more power and faster spool, but since it is only for a short period of time it won't heat things up enough to cause knock, and the rich AFR at WOT will cool things back down.
If you can add more timing with out knocking during spool up, it will help. But you want to aim for zero or very low knock. If you start knocking during spool up it will cascade into the rest of the pull, and you will start to bog out from pulled timing and it will ruin the whole pull.
You should keep the Low Octane map stockish, as a safety feature in case you get bad gas, have a bad tune, or heat soak your intercooler or something.