I just finished installing my supertrapp exhaust today and love the sound of it. I left all 12 disc in it for max power. I have been running the DJ kit with the 144 jet in it before I ever got the exhaust and now that I have it which jet should I change to. I have hard of people using a 170 main with good results and I have also heard of people using the 150 main in the DJ kit. Which one will give the best performance and if I did use the 170 main should I still continue using the DJ needle. Thanks any help would be appreicated.