Well guys here is what I did, I also installed dual yoshi cans, K&N filter and had lots of popin and blue flame, so I odered Brock's Racing pair block off, I installed them last night the hard way and change my oil and filter, after putting the bike together I started it and to my amazed no popin, no blue flames and throtle response seems to be better but I only rode around the neighborhood it was just to cold to go further, hopefully this week I will get a chance to really run her and if need too I will get her fine tune, I'm trying not to purchase a PCIII, for what I do with my bike it is not worth the money(I'm not trying to race the shuttle in to space.