What is better for the predator Hpd exhaust or LRD? Im gonna get whatever is better i just dont know which one is the best.

 

lrd only adds like 4.5 horse... i called and they said 12%... get a biggun or hmf... i have the biggun 5 HP, HMF 5 hp.. those are the top 2 pipes i found... the mbrp is good but it gives no power between 5500rpm and 7500 rpm... installed one on my buddys pred today but it didnt have what my biggun has.. and my biggun sounds better.