Tuning is giving the engine what it WANTS... not what a bunch of people tell you you think it should be.
Of course, it looks like you're running above the MAP limit, you should really get on a dyno to at least see if you're in the ballpark for ignition timing. 22.5+ psi isn't not little boost by any means.
I wouldn't trust stock knock control in this instance because well, it's very hard to make a car knock on Ethanol but it's easy to pass MBT and generate too much cylinder pressure. Tuning with OEM knock control on E85 is IMO a bad idea.
If you have some other way to properly measure repeatable performance to see if you're going in the right direction then do so in the mean time.
I will not be tuning it by knock Control.
As i wrote earlier, my approach will be.
I have a streach of road that i Always use.
Two runs in oposite direction - same start and stop. To counterfeit hight levels etc....
Dial in fueling at 12 - 12.2
Boost - i am happy with
Lower overall timing until car looses Power.
Then start my runs and monitor TQ and fats upping timing .075deg at the time.
As i have seen Before gains are pretty big with every .75 in right direction. (seen onse gain of 30tq rise at singel rpm/load Point just by raising .075 deg)
Onse the gains are not as big - stop and dial it back a Little.
Do a lot logs under diff condtions.
I am on a 3 bar mapsensor.
I spoke with one of the best e85 high Power e85 tuners in the country today.
Explaind what was happening with the car.
And he said that what i am seeing is not a knock it is a unfinished combustion, very likely beeing too rich.
I am gonna dial up fueling to 12-12.2 afr and turn down timing allover for another 3 - 6 deg.
My turbos spool at 3500rm K04 hybrids (its an RS4 btw) What would be the best approach on spool up?
