My quad is having an identical issue, and we have similar builds. It was trying to ping when gassing it yesterday. Running at the Oregon Dunes. Running Pump clear gas there, I believe it's 94. I was told to mix it with 110 by the builder. I had a Tech 11.5:1 piston, +3 TB, HC3 cam with no head work, new timing chain, new tensioner, new oil pump, new +5 balanced, trued, welded crank. CP gave a corrected deck height to have the piston milled to in order to maintain pump gas with the crank.. But obviously that didn't help.
Oh yeah, I also have a full FCI, and Dynatek programable with DL's curves, and a PC5... Haven't put the mix gas in it to see if it solved the problem, it's with the builder right now being checked out.. .Will let you know what he finds..
And yes mine has lived on the dyno lately
LOL 67.02 HP with 51.31 TQ, Map is almost perfectly straight Just slightly below the optimal line...
Disclaimer: My advice is information only and in no way a challange to race or have a measuring contest with anyone , there builder , tuner , best friend , Or guy with super high post count and his dog.
If you are pinging have you checked your air fuel ratio's or puled the timing back to stock?
If you had a true 11.5 to 1 static compression lets say you were at Coo's right now. Based on the weather conditions right now. Your dynamic compression would be 8.40 to 1 with your set up. All based if cam timimg is correct. Will with in pump gas specs.
Possible problem is how your quad was tuned in the first place. The raptor run's in a open loop with no knock sensors.
If it was tuned on a non load dyno it can possibly going lean as soon as you hit sand.
And with a TPS based tune no load given and the qaud's ECU not being able sample wide and or narrow O2's .Nor not even knowing if its pinging.
Then ad more timing to the mix and you will have a possable problem and not even know it.
Modern engine's require less timing then the old counter parts did. Stock Raptor timing is 27degs at WOT with everything set up and tuned correct you might be able to run it up to 29 to 30 degs on pump gas and gain a little.
The gain will look much better on a none load dyno.
Advice if your not good or comfortable reading spark plugs then invest in a wide band O2 set up.
Ride the quad and see when you hear the ping see if it's going lean. Around 11.3 to 11.8 a/f under load is good and up to 12.5 a/f cruising is good. And will like the coulpe extra degree's of timing.