I got the borla true dual kit and i want a little more sound out of my exhaust but i want it to stay clean... High flow cats or test pipes?

 

HFcats if you dont want raspiness.

 

https://my350z.com/forum/forumdisplay.php?f=334

 

High flow cats will keep it clean.

 

Deff. go with the HF Cats.

 

I'm also thinking of some HFC's but everyone has a different opinion on different brands. It's hard what to choose as the best brand. I have an Amuse on the way and would like to compliment it with some HFC's but don't want it ricer loud by any means. I would'nt mind some experienced input.

 

I've had the Ultimate Racing HFCs for 2 years without any issues. The exhaust will be louder with HFCs which I believe compliments most exhaust.

 

I like my Kinetix.

 

+1 on kinetix. Decent quality. Hey tech have you tried to pass inspection with them though? I'm gonna try within this week.

 

is there any rasp whatsoever, with HFCs? I know test pipes=rasp like crazy, but people say HFCs will also give you rasp. any input?

 

im in the same boat about tp or hfc's on my borla...i dont care about "staying clean" i just want it to sound kick as$ and have noticable gains...

 

Mine have a hint of rasp way up top in the rpms. Its not like a civic though.

 

i have megan test pipes and borla exhaust, i think it sounds great but it gets loud around 3.5 k but when your just crusing you dont notice it. Also it does not sound ricey at all, more muscle car sound.

 

also, if you are in a state where they do visual emission inspections, test pipes will fail you. go with the HF cats

 

Resonated TEst PIPES.

 

i have turbo xs test pipes on my G and it's raspy when it's cold

 

please post any clips if you have them!

 

I have kinetix HFC w/Borla TD and have resonate slightly at around 2900rpm and on decel. get a bit of a strange wispy noise, but can only hear that when driving next to walls. I also have headers though so that may be responsible...WOT is awesome!

 

For performance - test pipes.

Clean depends on state emissions test requirements. Ask in your regional forum.

 

It all depends on your combo. I know with what I have I hear rasp during warmup. It is real mild and I have to be outside the car to hear it. Once warm all I get is clean engine roar, but loud as ****.