i have the full muzzy 2-1 system, with a drop in k&n filter, and a drop in k& n filter. when i full throttle in like 3rg gear or higher it sputters some and goes. i aksed this before but iv got different answers and now that people have heard it and they said i may need a stage 3 jets. anyone with similar mods know what or suggest what i should do? it seems to do it alot when i put in shell vpower which is 93 octane. should i maybe switch to 91 or so? any suggestiongs would eb a great help. it pops and rumbles like a v8 like with alot of backpressure it seems in decelleration.