Anyone runs aftermarket header with stock catback? - Page 4 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FLYFISHR · 11-06-2018, 02:14 AM

Looking for a little advice from those of you that installed a header to the stock overpipe. I got a second hand header without any hardware so I’ve bought the necessary gaskets but I have no idea what size/length of bolts I will need to attach the stock overpipe to the header. Can you help with advice as to what you used?

e_lunatic · 01-05-2019, 05:06 PM

I have UEL catless Gruppe-S +flash with stock everything else. So far I like it. it has the rumble but doesn't drone at all. I would like the rumble to be more pronounced but I'm going to get exhaust at some point for that. for now i really like it.

jflogerzi · 01-19-2019, 12:20 PM

Quote:

Originally Posted by stlgrym3

After one week of daily commute with this setup I think I will go back with aftermarket catback again. Nothing wrong with stock catback, but starting to miss that deep growl once a while. Main targets are quiet catbacks with good build reputation. I’m down to two choices: Perrin 2.5 resonates or CSG Touring 86. I have ACE 350 header and stock front pipe. Which one would you pick?

Here would be my choices
R400
Perrin 2.5
MXP SP/ CSG touring

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scottbrz · 02-28-2023, 11:26 PM

Figured I'd add to this thread since I just put my BRZ back to stock and traded it.

I ran a JDL catless UEL header with the corresponding OFT OTS tune for a while. There were no other modifications on the car (i.e., the rest of the exhaust was stock). I also made the JDL specific valve timing changes that I found on the forum to the tune.

Overall, I liked it. The car was legit faster in almost any scenario. It turned the original three part powerband (initial torque hit, dip, then torque's back...) into a two part powerband with a low and high end. Though, I swear the car lost torque between 2K and 2.5K rpm.

Regarding sound, I can see why some might not like it. It had a bit of a nasal quality to it. Overall, I was cool with it. If I were to do it again, I might go equal length, I'm not sure the uel rumble thing is for me. Regarding volume, a lot of people say it barely increases volume. I'd say it notably increases volume but it isn't too loud. I wouldn't want it any louder, but then again I'm a pretty understated person and like to exercise a vehicle without alerting everyone or drawing attention.

KillerBMotorsport · 03-01-2023, 07:14 AM

Quote:

Originally Posted by scottbrz

I'm not sure the uel rumble thing is for me. Regarding volume, a lot of people say it barely increases volume. I'd say it notably increases volume but it isn't too loud. I wouldn't want it any louder, but then again I'm a pretty understated person and like to exercise a vehicle without alerting everyone or drawing attention.

UEL and EL have different sound profiles because of changes in pressure pulse timing. EL is definitely quieter than UEL.

11-06-2018, 02:14 AM	#43
FLYFISHR Senior Member Join Date: Aug 2013 Drives: 2014 BR"ZED" Sport-tech DGM MT Location: GTA CANADA Posts: 719 Thanks: 464 Thanked 253 Times in 162 Posts Mentioned: 7 Post(s) Tagged: 3 Thread(s)	Looking for a little advice from those of you that installed a header to the stock overpipe. I got a second hand header without any hardware so I’ve bought the necessary gaskets but I have no idea what size/length of bolts I will need to attach the stock overpipe to the header. Can you help with advice as to what you used? __________________ Old enough to know better but young enough to do it again

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02-28-2023, 11:26 PM	#46
scottbrz Member Join Date: Nov 2015 Drives: 2017 BRZ Limited PP Location: Raleigh, NC Posts: 33 Thanks: 4 Thanked 15 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Figured I'd add to this thread since I just put my BRZ back to stock and traded it. I ran a JDL catless UEL header with the corresponding OFT OTS tune for a while. There were no other modifications on the car (i.e., the rest of the exhaust was stock). I also made the JDL specific valve timing changes that I found on the forum to the tune. Overall, I liked it. The car was legit faster in almost any scenario. It turned the original three part powerband (initial torque hit, dip, then torque's back...) into a two part powerband with a low and high end. Though, I swear the car lost torque between 2K and 2.5K rpm. Regarding sound, I can see why some might not like it. It had a bit of a nasal quality to it. Overall, I was cool with it. If I were to do it again, I might go equal length, I'm not sure the uel rumble thing is for me. Regarding volume, a lot of people say it barely increases volume. I'd say it notably increases volume but it isn't too loud. I wouldn't want it any louder, but then again I'm a pretty understated person and like to exercise a vehicle without alerting everyone or drawing attention.

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