What's the power difference of F.I cbe with/without f.i hfc?

Majestik · 05-12-2010, 08:15 PM

Hi guys,

Advice pls. I've got fi bits on order but am considering cancelling my hfc-pipes because of what I've read about the drone/hiss issues.

I quite enjoy the car's dual personality where the sound is 'unintrusive' during normal driving with an increase in noise when drivin agressively, and I hope to retain a bareable interior volume.

My question is how much rwkw/rwhp will I actually lose with ONLY the cbe and also what's your opinion on whether the power difference would noticeable.

I was told by my tune-shop that my mate's (Bezzita) FI cbe and berk hfc dyno only showed a difference of 4rwkw between having a hfc and not.

I was under the impression that there would be a bigger difference.

Basically - Is the power gain from the hfc-pipes worth the drone/hiss/EPA issues for my daily driven car.

I'm 11 people away from completion (#137) and require your expert advice asap so I can advise Tony of changes or find a local buyer of the hfc-pipes I've ordered.

Thanks!

Xan · 05-12-2010, 08:31 PM

Hfc's as an addition to the CBE will be about 5 to 6 extra HP...

BOLIO 671 · 05-12-2010, 09:16 PM

Here is the info that you seek...it has all the Dyno sheets with comparisions...

Fast Intentions exhaust is here!

Majestik · 05-13-2010, 04:06 AM

Thanks guys! I'd read so much about fi in the past month that I'd forgotten that those details were there!

F.I. Inc. · 05-13-2010, 12:53 PM

Quote:

Originally Posted by Majestik

Hi guys,

Advice pls. I've got fi bits on order but am considering cancelling my hfc-pipes because of what I've read about the drone/hiss issues.

I quite enjoy the car's dual personality where the sound is 'unintrusive' during normal driving with an increase in noise when drivin agressively, and I hope to retain a bareable interior volume.

My question is how much rwkw/rwhp will I actually lose with ONLY the cbe and also what's your opinion on whether the power difference would noticeable.

I was told by my tune-shop that my mate's (Bezzita) FI cbe and berk hfc dyno only showed a difference of 4rwkw between having a hfc and not.

I was under the impression that there would be a bigger difference.

Basically - Is the power gain from the hfc-pipes worth the drone/hiss/EPA issues for my daily driven car.

I'm 11 people away from completion (#137) and require your expert advice asap so I can advise Tony of changes or find a local buyer of the hfc-pipes I've ordered.

Thanks!

I need you to keep one thing in mind. The HFC's add about 5-6 PEAK horsepower. If you look at our dyno charts you will see a substantial gain throughout the low end and mid range. I can tell you it is quite noticeable when you are driving the car.

I can tell you that since you went with the (Resonated) high flow cats & (18") resonators within the X Pipe, you will minimize the hiss on deceleration. Under acceleration the hiss is not there.

Tony

EVL370 · 05-13-2010, 09:27 PM

Tony,

Just wondering off topic however linked, have you ever herd 12"res with Resonated HFC's?

F.I. Inc. · 05-14-2010, 05:11 PM

Quote:

Originally Posted by EVL370

Tony,

Just wondering off topic however linked, have you ever herd 12"res with Resonated HFC's?

No I have not, but if it was my car I would do the 18" with resonated HFC's.

Diocletian · 05-14-2010, 07:07 PM

Oh don't tell me that Tony, I ordered the 12" with HFCs lol. I'm sure I'll still like them though.

F.I. Inc. · 05-14-2010, 07:29 PM

Quote:

Originally Posted by Diocletian

Oh don't tell me that Tony, I ordered the 12" with HFCs lol. I'm sure I'll still like them though.

This is just my personal preference. You ordered a good setup and will be staified!...

Tony

05-12-2010, 08:15 PM	#1 (permalink)
Majestik Track Member Join Date: Aug 2009 Location: SE Melbourne, Australia Posts: 800 Drives: '13 Jet Black R35GTR Rep Power: 17	What's the power difference of F.I cbe with/without f.i hfc? Hi guys, Advice pls. I've got fi bits on order but am considering cancelling my hfc-pipes because of what I've read about the drone/hiss issues. I quite enjoy the car's dual personality where the sound is 'unintrusive' during normal driving with an increase in noise when drivin agressively, and I hope to retain a bareable interior volume. My question is how much rwkw/rwhp will I actually lose with ONLY the cbe and also what's your opinion on whether the power difference would noticeable. I was told by my tune-shop that my mate's (Bezzita) FI cbe and berk hfc dyno only showed a difference of 4rwkw between having a hfc and not. I was under the impression that there would be a bigger difference. Basically - Is the power gain from the hfc-pipes worth the drone/hiss/EPA issues for my daily driven car. I'm 11 people away from completion (#137) and require your expert advice asap so I can advise Tony of changes or find a local buyer of the hfc-pipes I've ordered. Thanks! __________________ 2009 Black 370Z AT7 \| 2010 Satin Black MT6 www.Zclub.com.au - where the Aussie 'Z' Action is at CF AMUSE VESTITO \| FAST INTENTIONS \| STILLEN \| K&N \| EIBACH \| NISMO \| FORMULA1 Also '13 R35GTR Jet Black

05-12-2010, 08:31 PM	#2 (permalink)
Xan A True Z Fanatic Join Date: Jan 2010 Location: MA Posts:99999999999999 Posts: 3,301 Drives: 370Z 40th Aniversary Rep Power: 24	Hfc's as an addition to the CBE will be about 5 to 6 extra HP... __________________

05-12-2010, 09:16 PM	#3 (permalink)
BOLIO 671 A True Z Fanatic Join Date: Mar 2010 Location: GUAHAN Posts: 1,198 Drives: To & From then Back Rep Power: 3399	Here is the info that you seek...it has all the Dyno sheets with comparisions... Fast Intentions exhaust is here! __________________ 2013 Nismo Z34 / FI TT #091 / IG: @lilzilla_z34

05-13-2010, 04:06 AM	#4 (permalink)
Majestik Track Member Join Date: Aug 2009 Location: SE Melbourne, Australia Posts: 800 Drives: '13 Jet Black R35GTR Rep Power: 17	Thanks guys! I'd read so much about fi in the past month that I'd forgotten that those details were there! __________________ 2009 Black 370Z AT7 \| 2010 Satin Black MT6 www.Zclub.com.au - where the Aussie 'Z' Action is at CF AMUSE VESTITO \| FAST INTENTIONS \| STILLEN \| K&N \| EIBACH \| NISMO \| FORMULA1 Also '13 R35GTR Jet Black

05-14-2010, 07:07 PM	#8 (permalink)
Diocletian Enthusiast Member Join Date: Mar 2010 Location: Orlando, Fl Posts: 350 Drives: 09 370z CY A7 Rep Power: 15	Oh don't tell me that Tony, I ordered the 12" with HFCs lol. I'm sure I'll still like them though. __________________ Injen Dual CAI \| Illuminated Kick plates \| Stillen Sway bar kit \| F.I TDX w/ 12" Resonators \| F.I HFC's \| UpRev Tune \| 300HP/225tq Mustang Dyno

05-13-2010, 09:27 PM	#6 (permalink)
EVL370 Base Member Join Date: Dec 2009 Location: Melbourne Posts: 209 Drives: Nissan 370Z Rep Power: 16	Tony, Just wondering off topic however linked, have you ever herd 12"res with Resonated HFC's?

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