I looking for HFC with a deep aggresive sound with not alot raspiness.
I currently have AAM y-pipe w/ agency power exhaust.

 

idk, its going to be personal preference and research on youtube. but i have berks and love the way they sound

 

one high flow cat is not going to sound dramatically different from another when comparing metal to metal or ceramic to ceramic. Ceramic will sound deeper, be less expensive. Metal flows a touch better (assuming the car is NA), are more expensive, will be louder and raspier

the trick is finding a cat that fits correctly, that doesn't fail prematurely

 

I'll have to agree.. I don't have HFC's yet, but from everything I've heard so far, on YouTube and what not, Berks sound the nicest.. to me at least.

 

My car is n/a.. would i be able to use ceramic HFC?.. Other then the berks i was also looking at Random Technology, Ultimate racing cats, or AAM.. how do they compare?

i am looking for the best quailty, and deep sounding

 

Did you read this sticky?

https://my350z.com/forum/intake-exha...5-21-07-a.html

 

Absolutely - I used the Ultimate Racing ones on my car from 2003-2007 without issue. Those are the ones I prefer, and they have treated us very well (only 1 set ever having to go back for warranty since 2003)

 

youtube videos dont cut it sometimes..and there are some HFC that i havent heard yet.. Im looking for people that have these parts to give me there opinion on them.

i havent heard alot about ultimate racing HFC.. is that something z1performance makes or is that a private company

 

we are one of their dealers, yes

http://www.z1auto.com/submodel.asp?m...0z&cat=exhaust

 

here is a video that i just made in my garage. my current setup is berk HFC with a nismo exhaust.
hope this helps

View My Video

 

that will all depend on which cats you're comparing

 

well i thought metallic is for n/a... but can you use ceramic if you wanted too

 

yeah my berks sounded good till they failed within a few thousand miles not once but twice...had nothing to do with my car, they just failed due to heat id say..

 

Where you FI at the time?

 

yep...i dont recommend them to anyone F/I

 

im goin to stay n/a, but would u recommend wrapping HFC

 

no dont wrap them may cause cracking...i recommend test pipes now, but if u really wanna do high flows just go for it, berk has warranty and replaced mine both times they failed...the last time i just said screw it send me ur test pipes, cause i was done messing with the high flows

 

yea im not goin to be able to get test pipes cuz i live in a apartment complex w/ alot of old people..lol..N.. i wouldnt be able to pass emmision in MA. I wish i could, but im looking at either Berk or random technology HFC.. But i have been looking at the tomei test pipes, they look really nice.

 

test pipes and high flows are not gonna sound much different if any at idle and low rpm's so that doesnt really matter, and as far as getting inspected i live in ny state where we do obd scans and i have no problem...berk test pipes come with the defouler built in so u dont throw any codes and ur car doesnt know the difference...As long as u go somewhere who doesnt care to check for a cat on a visual inspection which i have no problem with ur fine...im sure u must know someone who works at a garage that does inspections and will overlook having no cats or know someone who can help u out..I have never had a problem anywhere ive gotten inspected

 

the berk test pipes dont have support brackets to prevent y pipe/ test pipe cracking. Ik there HFC do.. Should i be looking at test pipes that come with the support brackets?