First question, I just installed the magnaflow SS catback system. Just want to know how loud is it gonna be w/ an aftermarket header (Brospeed ). What should I expect w/ the new header (performance wise). Please give me your opinion...
Second question, If I put the gear on neutral position and rev the engine to about 3-4k RPM then release it, why the exhaust sounds like holding back (it's not smooth). My friend told me it is the catalyst (sp?). what do you guys think.....
Second question, If I put the gear on neutral position and rev the engine to about 3-4k RPM then release it, why the exhaust sounds like holding back (it's not smooth). My friend told me it is the catalyst (sp?). what do you guys think.....


