Rasp help

chad_z33 · 11-07-2009, 05:47 PM

I am currently running

HKS Hi-power exhaust
invidia test pipes (cat delete)

there is a slight rasp and metal vibration sound when i accelerate and hit around
4.5k-5k rpms and also when i decelerate.

possible solutions
1.would aftermarket headers help?
2.change to a different test pipe?
3.change y-pipe?

any help would be appreciated!
thanks in advance

pics of exhaust and test pipe im running

davidc81 · 11-07-2009, 06:21 PM

put your cats back on or get hfc's. /end thread.

bottlefedZ · 11-08-2009, 09:40 AM

Quote:

Originally Posted by davidc81

put your cats back on or get hfc's. /end thread.

+1 And putting headers would create even more rasp.

black06z · 11-08-2009, 09:49 AM

Yep, put back the stock cats or hack that system up with a resonator or x-pipe.

bryan@Z1 · 11-09-2009, 07:40 AM

Adding resonators would be the solution to allow you to keep your current system. Other than that installing high flow cats or your OEM cats in place of the test pipes is the only real option.

chad_z33 · 11-10-2009, 01:15 AM

thanks for all the help.so would the berks hfc be a good choice?i love the way my z sounds now besides the rasp.i didnt like how quiet it was with the stock cats.would the berks hfc keep the tone?or will it sound like the stock cats?

davidc81 · 11-10-2009, 07:49 AM

Quote:

Originally Posted by chad_z33

thanks for all the help.so would the berks hfc be a good choice?i love the way my z sounds now besides the rasp.i didnt like how quiet it was with the stock cats.would the berks hfc keep the tone?or will it sound like the stock cats?

it would be somewhere in the middle between stock cats and test pipes. berks is a good brand for hfc's as well as crawford.

chad_z33 · 11-10-2009, 05:21 PM

Quote:

Originally Posted by davidc81

it would be somewhere in the middle between stock cats and test pipes. berks is a good brand for hfc's as well as crawford.

thanks bro!awesome input.crawford it is!

jwr777 · 11-15-2009, 04:24 PM

Rasp are you kiddin me? You should have a little rasp,

you have a nissan Not a American Muscle Car!! Hello

2004Black350z · 11-15-2009, 04:58 PM

Quote:

Originally Posted by jwr777

Rasp are you kiddin me? You should have a little rasp,

you have a nissan Not a American Muscle Car!! Hello

Wow ur a tool

kenpo_350Z · 11-15-2009, 05:15 PM

Im with the others on getting the HFC's.

chad_z33 · 11-15-2009, 06:04 PM

Quote:

Originally Posted by jwr777

Rasp are you kiddin me? You should have a little rasp,

you have a nissan Not a American Muscle Car!! Hello

thanks for your useless input f**ken idiot

kenpo_350Z · 11-15-2009, 06:39 PM

I feel jwr777 will not last long here...

jwr777 · 11-15-2009, 06:59 PM

Sorry guys but I don't think rasp is bad as long as you have a lower tone along with it.

TJGILROY · 11-16-2009, 12:13 PM

i always wondered about the metal sound when i decelerate too...it may just be a slight exhaust leak...i never found mine but it doesn't bother me

TJGILROY · 11-17-2009, 10:37 AM

hey man, i had your same set up as far as test pipes and HKS exhaust go and one of the test pipes cracked...i would just keep an eye out...the shop said it was because they had no brackets and it puts strain on the test pipe....back to my stock cats i guess..

11-07-2009, 05:47 PM	#1
chad_z33 Registered User Join Date: Jan 2009 Location: hawaii Posts: 144 iTrader: (0)	Rasp help I am currently running HKS Hi-power exhaust invidia test pipes (cat delete) there is a slight rasp and metal vibration sound when i accelerate and hit around 4.5k-5k rpms and also when i decelerate. possible solutions 1.would aftermarket headers help? 2.change to a different test pipe? 3.change y-pipe? any help would be appreciated! thanks in advance pics of exhaust and test pipe im running Last edited by chad_z33; 11-07-2009 at 05:51 PM.

11-07-2009, 06:21 PM	#2
davidc81 Shill Account 2004 Nissan 350Z Join Date: Jul 2006 Location: allentown, pa Posts: 1,122 iTrader: (19)	put your cats back on or get hfc's. /end thread. __________________ Vortech SC Z- 403rwhp, 327rwtq

11-08-2009, 09:49 AM	#4
black06z Registered User Join Date: May 2006 Location: Hypocritical World Posts: 6,738 iTrader: (1)	Yep, put back the stock cats or hack that system up with a resonator or x-pipe. __________________ 2004 350z (sold) \|\| 2002 Maxima

11-09-2009, 07:40 AM	#5
bryan@Z1 Sponsor Z1 Motorsports Join Date: Jan 2008 Location: Carrollton, GA Posts: 2,514 iTrader: (19)	Adding resonators would be the solution to allow you to keep your current system. Other than that installing high flow cats or your OEM cats in place of the test pipes is the only real option. __________________ AIM: bryanatZ1 Phone (770)-838-7777 ex 302 bryan@300zx.com You want APS? You want us.

11-10-2009, 01:15 AM	#6
chad_z33 Registered User Join Date: Jan 2009 Location: hawaii Posts: 144 iTrader: (0)	thanks for all the help.so would the berks hfc be a good choice?i love the way my z sounds now besides the rasp.i didnt like how quiet it was with the stock cats.would the berks hfc keep the tone?or will it sound like the stock cats? Last edited by chad_z33; 11-10-2009 at 01:17 AM.

11-15-2009, 04:24 PM	#9
jwr777 Registered User Join Date: Dec 2008 Location: Springfield IL Posts: 26 iTrader: (0)	Rasp are you kiddin me? You should have a little rasp, you have a nissan Not a American Muscle Car!! Hello

11-15-2009, 05:15 PM	#11
kenpo_350Z Registered User Join Date: Feb 2008 Location: Garden City, KS. Posts: 1,191 iTrader: (13)	Im with the others on getting the HFC's. __________________ 2004 Silverstone Touring ZR 6 Spd, burnt orange/black vented seats, JDM Clear Reflectors, S2K Antenna, RS*R Exmag GTII, Motordyne 5/16 Iso Thermal Spacer, JWT Popcharger, Unorthodox Racing Underdrive Crank Pulley, 30% Tint, tail light overlays, Hawk HPS pads, Kenwood DNX 7100 NAV/DVD, Seibon VS2 Carbon Hood.

11-15-2009, 06:39 PM	#13
kenpo_350Z Registered User Join Date: Feb 2008 Location: Garden City, KS. Posts: 1,191 iTrader: (13)	I feel jwr777 will not last long here... __________________ 2004 Silverstone Touring ZR 6 Spd, burnt orange/black vented seats, JDM Clear Reflectors, S2K Antenna, RS*R Exmag GTII, Motordyne 5/16 Iso Thermal Spacer, JWT Popcharger, Unorthodox Racing Underdrive Crank Pulley, 30% Tint, tail light overlays, Hawk HPS pads, Kenwood DNX 7100 NAV/DVD, Seibon VS2 Carbon Hood.

11-15-2009, 06:59 PM	#14
jwr777 Registered User Join Date: Dec 2008 Location: Springfield IL Posts: 26 iTrader: (0)	Sorry guys but I don't think rasp is bad as long as you have a lower tone along with it.

11-16-2009, 12:13 PM	#15
TJGILROY Registered User Join Date: Apr 2009 Location: columbia, sc Posts: 387 iTrader: (0)	i always wondered about the metal sound when i decelerate too...it may just be a slight exhaust leak...i never found mine but it doesn't bother me __________________ '03 Track Brickyard, K&N CAI, HKS Hi Power Exhaust

11-17-2009, 10:37 AM	#16
TJGILROY Registered User Join Date: Apr 2009 Location: columbia, sc Posts: 387 iTrader: (0)	hey man, i had your same set up as far as test pipes and HKS exhaust go and one of the test pipes cracked...i would just keep an eye out...the shop said it was because they had no brackets and it puts strain on the test pipe....back to my stock cats i guess.. __________________ '03 Track Brickyard, K&N CAI, HKS Hi Power Exhaust

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