Well i had my bike dyno'd stock about 2 weeks ago, and i just put in a power commander, k&n filter, yosh rs3 race slipons, and a switchable tre 6.8k. going back to the dyno as soon as possible ($45 a pull, and kinda empty after all of the above. wife IS NOT HAPPY) as soon as i get the new charts i will post them and let you guys decide. pulled my plugs the other day and everything looked great (running around with the tre on) and it rides great. i used the switched version (and am very glad) because i thought it might be a good idea to turn it off if i encountered a low traction situation (rain, cold outside/cold tires etc) i can tell a big difference in the available power in the lower rpm's between on/off. i asked the local wrench about the plug issue, and he said all it does is unretard the timing, so it does nothing to the air/fuel ratio. just changes when the cylinder fires so you make more power. someone correct me if i'm wrong, but retard timing= easier starting, advance timing when you accelerate to increase engine rpm's, rich motor + spark advance= accelleration, lean motor + timing retard = flat spot in fuel map, no more go. the local wrench says suzuki does this to all the gixxers/busa to keep the squids from dumpin em on their ass/loopin it out when they grab a handful of first/second etc at way too low a speed. tre on = way more available torque, especially in 1st and 2nd gear. Big difference. if you put one on take a LOT of time playing with it. better to break the rear tire loose just screwin around than in the bottom of a fast apex. i can say without a doubt that the bike has a lot more rideability / controllability especially at lower rpms (going around a corner in town for instance) and the throttle respone is a lot more linear. no more jerking on/off etc. i put my power commander on first, and it made a big difference with this, rode it for a week and put the tre on. about twice as smooth with it on vs off. hope this helps
lumpy
