airflow/HP gain ???

[Winged Warrior]

The only mods I have- a WB slip on and a UNI filter.What i want to know is how much gain i will get if i take off my lid and rejet or take off my lid,take the end plate out of the pipe(full open),rejet?????? Anybody have any info,because i would like to know before i go to all the trouble,thanks.oh yea ,i dont want to get beat by anotherZZZEEEEE!!!!!

[UglyMotha™]

well i dont' have any numbers for you because unfortunantly my portable seat of the pant dyno dosen't do print outs:huh

but you will feel a awsome difference with the filter pipe and the lid removed but dont wasting your time removeing the end cap off you muffler cause you will loose gobs of torque