Review FastIntentions CF Catback w/18'' Res. X-Pipe + FI HFC's (w/pics)
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(Edit:Dyno's!!) Review FastIntentions CF Catback w/18'' Res. X-Pipe + FI HFC's
Edit: Finally got the car dyno'd in this AZ summer... ambient temp was ~90F.. existing mods before this exhaust install were: Stillen Gen3 CAI + Ground Kit.
And I realize some of the charts are blurry.. but the shop printer was low on ink.. I'll update them once he emails me some better ones.
NET GAINS: +35.6rwhp & ~18rwtq
--------------------------------------------------------------------------------------
First, allow me to introduce the All-Star cast from Fast Intentions:
FI's Carbon Fiber Catback with the newer 18'' Resonated X-pipe design.
Resonated High Flow Cats with J-bent O2 sensor anti fouler to prevent CEL lights.
I'll start off by saying that the build quality and design of this kit are top notch. Everything fits perfectly to stock mounts with no need of cutting/ welding... etc. In short, I can see the effort that FI in design and fitment of this exhaust. Installation was done here in FI's garage in Northridge, CA
Tony (from FI) explained that the newer X-Pipe design allows for less restrictive airflow (a.k.a. more power) whilst giving it a deeper growl.
As for the growl part, all I can say is WOW... All the video research I've done on this system doesn't do it justice! The sound is JUST AMAAZINGG.. Makes me want to drive this car just like when I first bought it
I'm personally a big fan of how the stock G tone sounds, and this exhaust simply amplifies its tone whilst adding a deeper throatier tone to it.
Absolutely no rasp whatsoever no matter how hard you push it!
Although I've only driven it for 6 hours so far, I could confidently say that this exhaust is louder than stock. Nothing that would wake up the neighbors, but you'll definitely feel the car expressing itself much more than it used to. Of course, this was expected from the larger pipes, and boy do I love giving 'em something to talk about
Also, I noticed the slight drone in the 1800-2100rpm range under engine load on low speeds. The same (very) slight drone that was there in stock exhaust, is now magnified a bit.
Again, it wasn't something that bothered me personally, just trying to point out any potential issues for some of you out there.
Highway driving at ~70 to 80mph was very calm, smooth, and completely drone-free. Yet, punching the pedal down here would still draw that smile on your face. Every Single Time
All in all, I'm very happy with this exhaust. I do feel the car wanting to rev more with a newfound sense of freedom from this less-restrictive setup. As much as my butt-dyno likes to say something here, I shall refrain from throwing in any conclusions before I do the dyno pulls once I'm back in AZ.
Base Dyno before exhaust:
A/F ratio for base dyno:
After FI HFC + CBE (blue line) vs base (red line):
A/F ratios FI HFC + CBE (blue line) vs base (red line):
Stock Exhaust setup:
FI Exhaust Fitment:
Stock Cats vs. Resonated HFC's:
Stock vs. X-Pipe with 18'' Resonators:
pic2:
New HFC's in place:
The twin CF mufflers hanging proud under Borfoo3's banner
:
And I realize some of the charts are blurry.. but the shop printer was low on ink.. I'll update them once he emails me some better ones.
NET GAINS: +35.6rwhp & ~18rwtq
--------------------------------------------------------------------------------------
First, allow me to introduce the All-Star cast from Fast Intentions:
FI's Carbon Fiber Catback with the newer 18'' Resonated X-pipe design.
Resonated High Flow Cats with J-bent O2 sensor anti fouler to prevent CEL lights.
I'll start off by saying that the build quality and design of this kit are top notch. Everything fits perfectly to stock mounts with no need of cutting/ welding... etc. In short, I can see the effort that FI in design and fitment of this exhaust. Installation was done here in FI's garage in Northridge, CA
Tony (from FI) explained that the newer X-Pipe design allows for less restrictive airflow (a.k.a. more power) whilst giving it a deeper growl.
As for the growl part, all I can say is WOW... All the video research I've done on this system doesn't do it justice! The sound is JUST AMAAZINGG.. Makes me want to drive this car just like when I first bought it
I'm personally a big fan of how the stock G tone sounds, and this exhaust simply amplifies its tone whilst adding a deeper throatier tone to it.
Absolutely no rasp whatsoever no matter how hard you push it!
Although I've only driven it for 6 hours so far, I could confidently say that this exhaust is louder than stock. Nothing that would wake up the neighbors, but you'll definitely feel the car expressing itself much more than it used to. Of course, this was expected from the larger pipes, and boy do I love giving 'em something to talk about
Also, I noticed the slight drone in the 1800-2100rpm range under engine load on low speeds. The same (very) slight drone that was there in stock exhaust, is now magnified a bit.
Again, it wasn't something that bothered me personally, just trying to point out any potential issues for some of you out there.
Highway driving at ~70 to 80mph was very calm, smooth, and completely drone-free. Yet, punching the pedal down here would still draw that smile on your face. Every Single Time
All in all, I'm very happy with this exhaust. I do feel the car wanting to rev more with a newfound sense of freedom from this less-restrictive setup. As much as my butt-dyno likes to say something here, I shall refrain from throwing in any conclusions before I do the dyno pulls once I'm back in AZ.
Base Dyno before exhaust:
A/F ratio for base dyno:
After FI HFC + CBE (blue line) vs base (red line):
A/F ratios FI HFC + CBE (blue line) vs base (red line):
Stock Exhaust setup:
FI Exhaust Fitment:
Stock Cats vs. Resonated HFC's:
Stock vs. X-Pipe with 18'' Resonators:
pic2:
New HFC's in place:
The twin CF mufflers hanging proud under Borfoo3's banner
:
Last edited by borfoo3; Jun 20, 2011 at 10:10 PM. Reason: Added dyno charts
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I am officially jealous of your exhaust and look forwards some sound clips.
Is there drastic weight difference between the CF and non CF exhaust systems from Fast Intentions ? Just curious if anyone knows.
Is there drastic weight difference between the CF and non CF exhaust systems from Fast Intentions ? Just curious if anyone knows.
CF sounded deeper than SS but SS does take abuse better. But damn those CF mufflers look serious.... Love it !
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Alright guys.. the dyno's are finally here.. all I have to say is: wow. I'm impressed!!
and for you skeptics out there, this is my dyno shop's contact info:
DynoComp. Scottsdale, AZ: Tel# (480) 596 - 0500
and for you skeptics out there, this is my dyno shop's contact info
:DynoComp. Scottsdale, AZ: Tel# (480) 596 - 0500
