Factory Exhaust with Headers and Cool Air Intake - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

JRCmx · 03-22-2015, 02:26 PM

What kind of note and power are you guys getting from this type of set up?
If the Cats are removed (for off highway use) does the factory exaust system come alive?

Question update.
Who makes an intake/airbox (not a Plenum) and full head back exhaust that works as a whole system?

cdrazic93 · 03-22-2015, 03:04 PM

Quote:

Originally Posted by JRCmx

If the Cats are removed (for off highway use) does the factory Cat back system come alive?

Yeah, when you take off the first cat the second cat comes alive, starts shooting hair balls and hisses at you.

JRCmx · 03-22-2015, 03:09 PM

phrosty · 03-22-2015, 03:38 PM

Get your own a funny guy, then you won't need cdrazic93's.

JRCmx · 03-22-2015, 03:50 PM

But semi seriously.
If I keep the factory exhaust (cat back) and pick up some EL headers and remove or ????? The cats will the exhaust sound good or is my best bet to replace the whole thing for best performance and sound?

campy · 03-22-2015, 03:57 PM

Quote:

Originally Posted by JRCmx

But semi seriously.
If I keep the factory exhaust (cat back) and pick up some EL headers and remove or ????? The cats will the exhaust sound good or is my best bet to replace the whole thing for best performance and sound?

An aftermarket catless header + stock headerback tends to sound a bit tinny in my experience. I believe ft86speedfactory has videos of their headers with otherwise stock exhaust on their website and threads if you're curious.

UEL headers might be more up your alley since they give a distinctive subaru sound while also providing more low-range power, which I'd personally prefer in a street car.

tyler_win_photo · 03-23-2015, 01:42 AM

Around 15 whp if you tune it. No tune... maybe 1-3whp. As for sound, yeah it does sound more alive. Anytime you remove cats, it's going to sound louder and more raw.

btoast · 03-23-2015, 03:43 AM

@JRCmx

Here is how my car sounded at cold start with catless UEL and stock everything else.

Cold starts sounded like rattle cans and the overall note sounds restricted and a bit tinny.

Here is how my car sounded at cold start with catless UEL and Resonated CBE.

And how glorious it sounds driving away.

In short, get a CBE or at least an ABE to open up the exhaust rumble and note.

itsjustdavep · 03-23-2015, 01:35 PM

What about uel + muffler delete? That viable?

Tcoat · 03-23-2015, 01:39 PM

Quote:

Originally Posted by cdrazic93

Yeah, when you take off the first cat the second cat comes alive, starts shooting hair balls and hisses at you.

I personal like the fully cated exhaust. Tad muffled though.

Koa · 03-23-2015, 04:09 PM

Take note that videos of header-only exhausts accentuate the rumble, or burble, of the system.. in person it's much less pronounced and sounds just like a buzzy tractor. Ask anyone of us who has ran this setup how we know..

wparsons · 03-23-2015, 04:48 PM

Quote:

Originally Posted by itsjustdavep

What about uel + muffler delete? That viable?

If you like LOUD and raspy, it'll work.

itsjustdavep · 03-23-2015, 05:03 PM

Quote:

Originally Posted by wparsons

If you like LOUD and raspy, it'll work.

So I need UEL and a cat back to not sound like a honda. Got it

JRCmx · 03-23-2015, 05:16 PM

OP edited with this question.

Who makes an intake/airbox (not a Plenum) and full head back exhaust that works as a whole system?

03-22-2015, 02:26 PM	#1
JRCmx Member Join Date: Mar 2015 Drives: Ridgeline Location: USA Posts: 20 Thanks: 0 Thanked 5 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Factory Exhaust with Headers and Cool Air Intake What kind of note and power are you guys getting from this type of set up? If the Cats are removed (for off highway use) does the factory exaust system come alive? Question update. Who makes an intake/airbox (not a Plenum) and full head back exhaust that works as a whole system? Last edited by JRCmx; 03-23-2015 at 05:14 PM.

03-22-2015, 03:38 PM	#4
phrosty Senior Member Join Date: Apr 2013 Drives: 2013 FR-S Location: Seattle Posts: 806 Thanks: 202 Thanked 320 Times in 199 Posts Mentioned: 18 Post(s) Tagged: 1 Thread(s)	Get your own a funny guy, then you won't need cdrazic93's. __________________ 2013 Whiteout 6AT FR-S \| Perrin Inlet Tube + 2.75" CAI \| OpenFlash Header \| P&L Catback \| 4.88 Final Drive \| Dialed in OFT 2.0x Stage 2 E85 \| 18x8 Enkei Raijin + 225/40 Michelin Pilot Super Sport \| 17x7 Stock + 215/45 Michelin X-Ice Xi-2

03-23-2015, 01:35 PM	#9
itsjustdavep Senior Member Join Date: Jun 2014 Drives: Asphalt Scion FR-S Location: Orlando, FL Posts: 196 Thanks: 33 Thanked 34 Times in 29 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	What about uel + muffler delete? That viable? __________________ 2013 Asphalt HRI Tuned-K&N DropIn-Tomei UEL-Tomei OP-Invidia FP-Nameless Muffled Trackpipe...and corn

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03-22-2015, 03:09 PM	#3
JRCmx Member Join Date: Mar 2015 Drives: Ridgeline Location: USA Posts: 20 Thanks: 0 Thanked 5 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)

03-22-2015, 03:50 PM	#5
JRCmx Member Join Date: Mar 2015 Drives: Ridgeline Location: USA Posts: 20 Thanks: 0 Thanked 5 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	But semi seriously. If I keep the factory exhaust (cat back) and pick up some EL headers and remove or ????? The cats will the exhaust sound good or is my best bet to replace the whole thing for best performance and sound?

03-23-2015, 01:42 AM	#7
tyler_win_photo Senior Member Join Date: Dec 2013 Drives: 2014 Scion FRS (Asphalt) Location: Redmond, WA Posts: 554 Thanks: 36 Thanked 171 Times in 141 Posts Mentioned: 6 Post(s) Tagged: 2 Thread(s)	Around 15 whp if you tune it. No tune... maybe 1-3whp. As for sound, yeah it does sound more alive. Anytime you remove cats, it's going to sound louder and more raw.

03-23-2015, 03:43 AM	#8
btoast Senior Member Join Date: May 2014 Drives: BRZ Location: Riverside, CA Posts: 263 Thanks: 26 Thanked 74 Times in 52 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	@JRCmx Here is how my car sounded at cold start with catless UEL and stock everything else. Cold starts sounded like rattle cans and the overall note sounds restricted and a bit tinny. Here is how my car sounded at cold start with catless UEL and Resonated CBE. And how glorious it sounds driving away. In short, get a CBE or at least an ABE to open up the exhaust rumble and note.

03-23-2015, 05:16 PM	#14
JRCmx Member Join Date: Mar 2015 Drives: Ridgeline Location: USA Posts: 20 Thanks: 0 Thanked 5 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	OP edited with this question. Who makes an intake/airbox (not a Plenum) and full head back exhaust that works as a whole system?

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