Offsetting the trigger wheel offset everything... timing and injectors. Unless you told the ECU you moved the trigger wheel LOLCan't wait to hear what you think when done.
I think this is a great mod to do in conjunction with a 15T front sprocket. While the sprocket affects performance in every gear (giving the feeling of more torque.... a lot more in low gears), it's REALLY is noticeable in 1st and 2nd gears. The timing mod is most noticeable in 3rd gear because the ECU retards the ignition in 1st and 2nd, sorta cancelling out the timing gain in those gears.
What gears do you have the most fun in street riding under 80 mph?....1st, 2nd, & 3rd are the smile makers in my book. These two mods hit the jackpot!
While it's a little hard to compare my before and after mileage because I corrected my speed/odometer just after these last two mods, I think I got on average a fraction or maybe 1 mpg improvement from the timing advance. Ripping on it in the mountains the worst I got was 38. Now the worse I get is 39. Best combined country romping 50 mph cruising 40-41 mpg.