How would switching from HFC's to resonated test pipes change the sound?

Dembflyr · 01-31-2011, 08:41 AM

I know it would be a bit louder and I'll probably get some drone and maybe some rasp. Is that what I can expect?

Just curious if anyone has gone from HFC's to RTP's.

I have the Berk CBE and HFC's. I am saving right now for a SC kit and I have to get rid of the HFC's as they won't last long in a FI application.

The good news is that I'll have a set of slightly used Berk HFC's for sale soon.

G37sHKS · 01-31-2011, 09:53 AM

Get Motordyne ART pipes

They are quieter than HFC and give more power than Regular Test pipes.

shaun66 · 01-31-2011, 10:58 AM

Quote:

Originally Posted by G37sHKS

Get Motordyne ART pipes

They are quieter than HFC and give more power than Regular Test pipes.

Will the side branch on the ART pipes hold up to FI?

cdoxp800 · 01-31-2011, 11:05 AM

If your going to go SC you will want to keep the HCF. The reason for this is, if the exhaust it too free flowing you will lose Boost pressure with a Supercharger setup. I when was using Berk HFc's switched back to stock cats and gained 2.5 PSI and 30Whp/Tq.

Dembflyr · 01-31-2011, 11:08 AM

Quote:

Originally Posted by cdoxp800

If your going to go SC you will want to keep the HCF. The reason for this is, if the exhaust it too free flowing you will lose Boost pressure with a Supercharger setup. I when was using Berk HFc's switched back to stock cats and gained 2.5 PSI and 30Whp/Tq.

I have been told that HFC's will melt due to the higher temps generated by going FI.
From what I understand, GTM is working on cracking the VVEL so there shouldn't be an issue with test pipes.

efuseakay · 01-31-2011, 11:32 AM

At this time, your best bet is to keep the stock cats if you're going FI.

Dembflyr · 01-31-2011, 11:43 AM

Quote:

Originally Posted by efuseakay

At this time, your best bet is to keep the stock cats if you're going FI.

Too late.

I got the HFC's before I decided on FI.

I do have the stock cats but I really like the sound with the HFC's. I will put them back on if I need to.
Aren't there guys running SC's with LTH's?

01-31-2011, 08:41 AM	#1 (permalink)
Dembflyr Track Member Join Date: Feb 2010 Location: Indiana Posts: 886 Drives: G37S Sedan Rep Power: 16	How would switching from HFC's to resonated test pipes change the sound? I know it would be a bit louder and I'll probably get some drone and maybe some rasp. Is that what I can expect? Just curious if anyone has gone from HFC's to RTP's. I have the Berk CBE and HFC's. I am saving right now for a SC kit and I have to get rid of the HFC's as they won't last long in a FI application. The good news is that I'll have a set of slightly used Berk HFC's for sale soon. __________________ 2012 G37S Sedan 6MT - Project Practicality 2009-6MT-Sport/Touring-Dembflyr's Journal-TT Build Thread-CAR IS SOLD

01-31-2011, 11:05 AM	#4 (permalink)
cdoxp800 A True Z Fanatic Join Date: May 2009 Location: FL Posts: 1,337 Drives: 2011 Nismo Rep Power: 19	If your going to go SC you will want to keep the HCF. The reason for this is, if the exhaust it too free flowing you will lose Boost pressure with a Supercharger setup. I when was using Berk HFc's switched back to stock cats and gained 2.5 PSI and 30Whp/Tq. __________________ 2011 Brilliant Silver NISMO 370z. #: 0046. PPE LTH \| MillSpec Cats \| F.I Exhaust \| Akuma Intakes \| Rotora 6/4 Brakes

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01-31-2011, 09:53 AM	#2 (permalink)
G37sHKS A True Z Fanatic Join Date: Feb 2010 Location: Dubai Posts: 1,183 Drives: 09 G37S Coupe 7AT Rep Power: 20	Get Motordyne ART pipes They are quieter than HFC and give more power than Regular Test pipes.

01-31-2011, 11:32 AM	#6 (permalink)
efuseakay Enthusiast Member Join Date: Mar 2010 Location: The DAYNGA ZONE! Posts: 404 Drives: 2010 G37xS Sedan Rep Power: 15	At this time, your best bet is to keep the stock cats if you're going FI.