Exhaust advice, ready for a change!!! - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Fred Flintstone · 11-12-2017, 09:14 PM

Going Open Flash UEL catless headers and Invida Q 300. Only question is cated or uncated resonated front pipe ??? Any more or less power or torque on cated or catless front pipe? How about sound level difference ??? Anyone else have this combo ???

NRXRaptor · 11-12-2017, 10:09 PM

If I were you I'd get the JDL ultraquiet front pipe, but I'm not you. You are going to lose some power with a cat, but not so much that you will notice especially for a daily driver. Just straight pipe it if having the biggest number is important to you

Somerandom18 · 11-12-2017, 10:20 PM

Catless master race.

Sent from my Pixel XL using Tapatalk

Fred Flintstone · 11-12-2017, 10:25 PM

Going catless resonated front pipe I assume is louder ?'

Teseo · 11-12-2017, 11:35 PM

Quote:

Originally Posted by Fred Flintstone

Going catless resonated front pipe I assume is louder ?'

Kinda, you will have q300 and that catback is on quiet side

FunnyGopher · 11-13-2017, 02:48 AM

Quote:

Originally Posted by Fred Flintstone

Going catless resonated front pipe I assume is louder ?'

A catless pipe is going to be louder than a catted pipe. A catless resonated pipe is designed to remove some of the harsher higher pitched tones that might occur. So it'll be louder than stock, but a little easier on the ears than just a catless pipe. They typically end up making the tone a little deeper.

mav1178 · 11-13-2017, 12:27 PM

Quote:

Originally Posted by Fred Flintstone

Going catless resonated front pipe I assume is louder ?'

Depends on the front pipe.

Fujitsubo front pipe is same as stock without a cat.

Submarinesonce · 11-13-2017, 01:53 PM

go catless, there will be additional volume but the added power is worth it imo. definitely spring for a resonated pipe.

Lunatic · 11-13-2017, 04:33 PM

I have a Top Speed EL header, HKS dual resonated front pipe, and Q-300 exhaust. No Cats. Nice and quiet until you get on it. At freeway speeds it's easy to carry on a conversation with someone next to you. A perfect compromise for me.

tyler_win_photo · 11-13-2017, 06:58 PM

Considering the car is tuned, catless actually makes less torque. In the grand scheme of thing catted or catless front pipe makes very little difference in power unless you're boosted.

Fred Flintstone · 11-13-2017, 08:21 PM

Thanks for all the advice, can't afford boosted right now so try to get as much torque as possible. Any tricks other than the OFP UEL header with tune and Invida Q 300. ie intake of any use drop in, TRD ect. Torque Torque Torque maybe port and polish my TB any tricks or tips no matter how small !!!

Submarinesonce · 11-14-2017, 09:19 AM

any evidence to support the claim that catless = less torque?

11-12-2017, 09:14 PM	#1
Fred Flintstone Member Join Date: Oct 2014 Drives: 2015 FR-S Asphalt, racing stripes, Location: Texas Posts: 61 Thanks: 4 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Exhaust advice, ready for a change!!! Going Open Flash UEL catless headers and Invida Q 300. Only question is cated or uncated resonated front pipe ??? Any more or less power or torque on cated or catless front pipe? How about sound level difference ??? Anyone else have this combo ???

11-13-2017, 01:53 PM	#8
Submarinesonce Senior Member Join Date: Mar 2017 Drives: Frs Location: Florida Posts: 130 Thanks: 21 Thanked 81 Times in 43 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	go catless, there will be additional volume but the added power is worth it imo. definitely spring for a resonated pipe. __________________ JDL UEL Turbo GT2860RS, AP Racing BBK, Verus Splitter/diffuser/canards, Sard rep carbon wing, TFF bash bar, HKS hi power, Tein Flex A, Hotchkiss FSB, Radium MCB, Konig Hypergram 17x8, FS Indy 500, 6k HID, Whiteline trans bushing insert, Verus AOS, grimmspeed strut brace, Racerx oil cooler w/ setrab 619, ES steering rack bushings, Whiteline subframe bushings, Toms tails, STi mirror caps, IRP shifter, TRD Steering wheel

11-13-2017, 06:58 PM	#10
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)	Considering the car is tuned, catless actually makes less torque. In the grand scheme of thing catted or catless front pipe makes very little difference in power unless you're boosted. __________________ AVO Stage 2 Turbo Build Thread https://wheelwell.com/tyler-nguyen-1...014-scion-fr-s

11-14-2017, 09:19 AM	#12
Submarinesonce Senior Member Join Date: Mar 2017 Drives: Frs Location: Florida Posts: 130 Thanks: 21 Thanked 81 Times in 43 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	any evidence to support the claim that catless = less torque? __________________ JDL UEL Turbo GT2860RS, AP Racing BBK, Verus Splitter/diffuser/canards, Sard rep carbon wing, TFF bash bar, HKS hi power, Tein Flex A, Hotchkiss FSB, Radium MCB, Konig Hypergram 17x8, FS Indy 500, 6k HID, Whiteline trans bushing insert, Verus AOS, grimmspeed strut brace, Racerx oil cooler w/ setrab 619, ES steering rack bushings, Whiteline subframe bushings, Toms tails, STi mirror caps, IRP shifter, TRD Steering wheel

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Oil Change Intervals (Winter Storage Advice)	Mr.Impreza	Mechanical Maintenance (Oil, Fluids, Break-In, Servicing)	14	10-21-2016 04:09 AM
Advice for nice shops that do oil change and bolt on in the East Bay	wilfredwong	Northern California	14	11-05-2014 02:24 AM
Ready to Lower!! - Last minute advice	benlevy3	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	9	10-16-2012 12:20 PM

11-12-2017, 10:09 PM	#2
NRXRaptor Senior Member Join Date: Aug 2016 Drives: BRZ Location: Mendocino County Posts: 369 Thanks: 7 Thanked 96 Times in 75 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	If I were you I'd get the JDL ultraquiet front pipe, but I'm not you. You are going to lose some power with a cat, but not so much that you will notice especially for a daily driver. Just straight pipe it if having the biggest number is important to you

11-12-2017, 10:20 PM	#3
Somerandom18 Senior Member Join Date: Sep 2016 Drives: 2017 manual BRZ Location: USA Posts: 467 Thanks: 322 Thanked 178 Times in 111 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Catless master race. Sent from my Pixel XL using Tapatalk

11-12-2017, 10:25 PM	#4
Fred Flintstone Member Join Date: Oct 2014 Drives: 2015 FR-S Asphalt, racing stripes, Location: Texas Posts: 61 Thanks: 4 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Going catless resonated front pipe I assume is louder ?'

11-13-2017, 04:33 PM	#9
Lunatic Senior Member Join Date: Jan 2014 Drives: 2015 Raven FRS Location: Indio, CA. Just an Old Fart in a Automatic!. Posts: 1,614 Thanks: 7 Thanked 1,056 Times in 488 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	I have a Top Speed EL header, HKS dual resonated front pipe, and Q-300 exhaust. No Cats. Nice and quiet until you get on it. At freeway speeds it's easy to carry on a conversation with someone next to you. A perfect compromise for me.

11-13-2017, 08:21 PM	#11
Fred Flintstone Member Join Date: Oct 2014 Drives: 2015 FR-S Asphalt, racing stripes, Location: Texas Posts: 61 Thanks: 4 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Thanks for all the advice, can't afford boosted right now so try to get as much torque as possible. Any tricks other than the OFP UEL header with tune and Invida Q 300. ie intake of any use drop in, TRD ect. Torque Torque Torque maybe port and polish my TB any tricks or tips no matter how small !!!

User Name		Remember Me?
Password