So I've had my motor freshened up and got enough miles on it to start playing with Timing and Fuel and am looking for some insight.

Current set-up is a 95" with Wiesco flat tops, Underground Performance 76cc ported heads with 0.030" squish. Calculated around 10.5:1 static comp. 1.9" intakes, high lift springs, SE adj pushrods, Feuling lifters. Cams are S&S 585 easy start gear drive and it's breathing through a S&S stealth intake and Bassani Road Rage exhaust.

I'm still running the stock CV40 which I believe is running a little rich. It puffs black when I blip the throttle and the swingarm is covered in soot. Tried playing with the Mix screw but I can't get the bike to stumble or cough even with it turned all the way in, assuming I need to come down on the Pilot. So I just left it at 1 turn out for now.

I'm eventually planning on having it dyno tuned, but for the time being I'd like to get things dialed in as close as I can.

The ignition was already on the bike, Crane Fireball Hi-4TC:


The owners manual is available for viewing if you CLICK HERE

The bike was previously set-up with way too high static comp for the street and the only way to keep it from detonating was fully retard the initial timing and use the slowest curve. Now that it can handle the timing I've successfully bumped it up a bit and so far no detonation has occurred.

From what I've been told was to play with timing on the street, try to find that sweet spot to save some time fiddling on the dyno. Seat of the pants is a little difficult to tell, but I always heard you make the most power right before detonation occurs.

So my question is, how does the Initial timing compared to the overall Advance slope affect the torque curve, hp, etc... Is it better to have a more extreme advanced slope with retarded timing? Or better to have a slower more mellow advance slope with greater initial timing?

Currently I have it set to:

Mode : 1 (multi-spark, pre-loaded tables)
Rear Cyl Offset : 0* (offset range is -5 to +4 degrees)
Initial Timing : +3* (offset range is -5 to +4 degrees)
Advance Slope : +5 (range from 0 to 9, 5 is similar to stock)
Rev Limiter : 6100RPM

Here's a couple pictures of the new plugs, Front Cyl is always the plug on the left. The front insulator has a slight tinge of brown to it, the rear is more white, no signs of melted aluminum, just some soot on the base of the threads.



Should I just keep turning everything up until it detonates and then back off the Initial timing?