Nissan 370Z Forum - What is the difference between HFC and test pipe?

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Nissan 370Z Forum (http://www.the370z.com/)

- Intake/Exhaust (http://www.the370z.com/intake-exhaust/)

- - What is the difference between HFC and test pipe? (http://www.the370z.com/intake-exhaust/21464-what-difference-between-hfc-test-pipe.html)

Westwood

07-06-2010 02:54 PM

Quote:

Originally Posted by m4a1mustang (Post 608252)

There is NO performance difference between 12" or 18" resonators. The resonators only affect sound volume.

thats what i said 12" = loudest :tup: +tp = best gains. i was looking at the dyno sheets and test pipes have a few more hp compared to the sheet with hfc's

nolan1016

07-06-2010 03:30 PM

Quote:

Originally Posted by Westwood (Post 608814)

thats what i said 12" = loudest :tup: +tp = best gains. i was looking at the dyno sheets and test pipes have a few more hp compared to the sheet with hfc's

non resonated would be louder then 12", if thats what you meant.

Westwood

07-06-2010 05:45 PM

Quote:

Originally Posted by nolan1016 (Post 608879)

non resonated would be louder then 12", if thats what you meant.

12" are louder than 18" right? non resonated u talking about the tp's?

and sorry if my english is not perfect i went to french school... excusez moi pour mon anglais :D

nolan1016

07-06-2010 06:07 PM

Quote:

Originally Posted by Westwood (Post 609211)

12" are louder than 18" right? non resonated u talking about the tp's?

and sorry if my english is not perfect i went to french school... excusez moi pour mon anglais :D

yes 12" are louder then 18" but you can also go no resonators on the exhaust. Test pipes comes in resonated or non-resonated.

BOLIO 671

07-06-2010 07:35 PM

Quote:

Originally Posted by Westwood (Post 608814)

i was looking at the dyno sheets and test pipes have a few more hp compared to the sheet with hfc's

True..Test Pipes do produce more HP than HFC's bu not by much...and you will only see the gains at the top end

jadeb0x

07-06-2010 08:23 PM

i have the MXP Resonated Test Pipes with MXP CBE... i love my setup! you could search youtube for my dyno video if you're really curious on the sound.

it's raspy, but kinda in a good way... once cruising in 6th gea,r the in-cabin sound is surprisingly quiet!

Westwood

07-06-2010 08:44 PM

Quote:

Originally Posted by jadeb0x (Post 609463)

awww sh*t thats ur z lol nice man i was looking at the drop looking real good and sounds real nice man not too raspy :tup:

Westwood

07-06-2010 08:49 PM

Quote:

Originally Posted by nolan1016 (Post 609276)

yes 12" are louder then 18" but you can also go no resonators on the exhaust. Test pipes comes in resonated or non-resonated.

so no resonaters on the exhaust + test pipes will it be too raspy with FI? i just want the best gains + loud deep tone, not too raspy ... man im asking for too much i think :ugh2:

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