Has anyone done this? how does it sound? I know its loud but is there any rasp? I have an Ark CBE and ARK HFC now and there is a raspy whistle noise that has to go. I dont want to go back to stock cats because im tuning soon and want the extra power. But I dont want any rasp!!!! let me know, thanks. And if any one is selling a pair.. HMU!!

 

I didn't know ARK has HFCs too

 

Any sort of test pipes or high flow cats will have rasp, no matter what the exhaust brand is. The only non-rasp hfc/tps are made by motordyne. I know Intec Racing has a pretty good deal on motordyne products; I've used that place prior. Nice guys Tell 'em Eric sent ya.

 

Really? Because I'm pretty sure my Berk/ARK combo is still lacking in the rasp department. For what it's worth I'm curious about this setup myself.

 

i have MXP double resonated TPs. no rasps at all

 

Did you have the ark by itself before you got the berks? If so how would you compare the combination of the two to just the ark by itself? I want to change my cats but don't want to lose the deep and aggressive sound just the ark delivers.

 

I didn't have the stock cats and ARK on mine, but I was able to hear another car next to mine and basically mine was just a bit louder. All it seemed to do was amplify the exhaust and give it a bit more of a bassy sound.

 

When you let off the gas...you guys don't hear rasp?

 

I think you're confusing HFC hiss with rasp.

 

^thats hiss not rasp lmao.

Op it sounds like trash. It rasps pretty hard some guy at the last meet had it.

 

You can hear the hiss/whistle from the HFCs in this guy's video when he revs the engine.

‪370z in Guam with HFC and exhaust‬‏ - YouTube

 

This is what I was afraid of. I love the sound of my ARK with HFCs but I'm scared to get test pipes because I'm worried about turning into a rampaging fart cannon of legend. Just like when I added HFCs to my MXP, things went straight to hell then.

 

Ah that's nice to know. I was real interested in the art pipes but they don't fit on my X which is a huge letdown.

 

^ there is a possibility that the new version coming out in a month or two might fit the X...the guy at motordyne says theres more clearance...

G35Driver - View Profile: Hydrazine

 

I would imagine this is what the ARK sounds like with test pipes.

‪2010 nissan 370z ARK cat-back exhaust system‬‏ - YouTube

As a side note, I'm now considering picking up a set of Berk TP's. Sounds pretty nice after going through a few videos.