Does anyone have the quiet core insert and are they alot quieter and is there any power loss ?

 

yes that's quieter like stock pipe and you loose about 1 hp. with a Wolverine

 

Quiet core for which pipe? I have a quiet core for a White Bros. E-Series and it does quiet it down quite a bit, but I still think it's too loud for Silver Lake this year. WB claims it knocks off 6 dB from the E-Series ProMeg. There is a definite power loss on the E-Series with a quiet core in it.

 

i have a FMF Megamax II