I am trying to figure the cost of having a TVI 720 built and part of that cost will be in a header/pipe combination and the big gun certainly sounds like it will meet the sound requirements that i have to live with here in oregon but what about power?I am using the FMF-Q pipe and power bomb header on my 686 raptor and on my wifes 440 ex and they do very well and are probably similar in the internal design to the big gun although i am not sure of that.I am not concerned with a pipe that builds high end power but i do want good low end and torque and i would think that just as the FMF-Q does this so should the big gun.Has anyone seen dyno sheets or specs about the big gun and if so what were the results.

 

I had the big gun Q ....... I dont like big gun the fit and durablity of the pipe is terrible. The power with the quiet core is weak, stock felt stronger everywhere. I always wished fmf made their Q pipe for the DS.

 

dune the graydon has disks so you can tune out some of the noise and then you can open it up, when noise isn,t a issue.

 

I purchased a big gun quiet system and had it installed by big gun. I thought they would know what they were doing, but I was wrong. First off they installed the race system, second they told me that when they installed the quite system that I didn't need to rejet, just remove the air lid, and third the quiet core insert had to be ground down to fit in the pipe, NOT GOOD! As long as I am in the mood, I will tell you about them loosing the short section of my stock head pipe. I am waiting for the replacement that I purchased so that I can return the P.O.S. quite system. O.K. I will get off my soap box now.

 

SANDMAN430-Can i get the graydon in a slip on and what do you think it would come in at for noise with the minimum number of discs?I have heard good things about the graydon and isnt that what you run?

 

that is what i run,and whenit is properly packed it is as quiet as most performance pipes but when the packing goes it's as loud as any. i would only be guessing but under good conditions i'd say between 99-102 on the noise, no disks