Lighter headers without added noise?
 

New to the forum. Have a 2018 brz since new. Did the indivia v2 exhaust and love the exhaust note. Want a lighter header setup without adding (too much more) noise. Possible?

Lighter than stock? I think they all are. A catted header will be the quietest. Still louder than stock though

Sent from my ONEPLUS A5010 using Tapatalk

JDL Catted Header. Pricey, but is great quality. Did make my exhaust a bit louder (Q300), but nothing overly obnoxious, if anything makes it deep yet aggressive.

Welcome to our forum - :clap:

Your car looks good - :thumbsup:

If you liked the sound like it is, I suggest you just leave the exhaust system alone.

;)

Anytime you play with the cats the car will get louder. AFE has a catted EL header so the tone won't really change vs stock.

Super clean!

Take the heat shields off.

Remove the oem cat will reduce weight. Otherwise look into a good header for your budget. Regardless it will add more sound. But that's a subjective thing.

FTSpeed/FT86 Speedfactory just got their ceramic coated header back with a new bronze coating. Otherwise if you want the best money can buy? Fujitsubo.

If you have E85 around. Just get Flex Fuel and ecutek tune from CSG. Better than getting a header. If you want a bit more noise switch our your Front pipe.

Thanks all for the responses. Again I'm reducing weight in the car. Not looking at more power. At 2602lbs right now (no driver/half fluid/no junk in the trunk/LW battery/rear seat delete and other stuff removed) Shooting for 2580ish. I like the sound it currently makes, but could go a little more louder for weight loss. speedfactory headers are too loud. heard them in person. I'll keep searching. Best.

your not get quiet and light with headers on this car :)

When i was NA, I had ace header, hks double res FP with csg mxp touring 86.
Sounded great, and was barely louder then stock especially when cruising.
Csg mxp is one of the best CBEs if you want good tone but little added noise.

I believe ace is 12lbs lighter too.

I dropped over 190lbs without sacrificing any driver comforts, actually reduced cabin noise in the process. AC delete for most people would be the only driver comfort i got rid of, but i never used the AC until after I deleted it. The fans work decently well with no freon.

Welcome to the forum,
nobody really talks about lightweight headers, thats not really a topic of discussion.

im happy to offer some ways to lose weight tho:

if you want to loose weight, the first and second place to look is wheels+tires. im not sure but it **looks** like youre rocking federal 595 tires which are the heaviest tire in the milky way galaxy. every pound on your wheels+tires equates to be equivalent to ~ 10lb up on the car. so loosing 2 lbs on a header aint jack compared to 2lb on your tires. tirerack lists tire weight in the specs, indy500 are among the lighter options.

if youre serious about loosing weight, look into nonheated nonreclineable seats, titanium single exit catbacks(1 muffler weighs less), titanium front pipe, ditch your a/c, lightweight flywheel, carbon driveshaft, get a steering wheel with no airbag, yeah lightweight headers arent really a thing. im sure some headers weigh less, but there are better ways to slim down.

your invidia exhaust is probably lighter than factory, but a pig compared to a Titanium Tomei. a quick google says the invidia n2 weighs 22kg=48lbs,

https://i.ytimg.com/vi/F2R6y1_zC9o/mqdefault.jpg

The aftermarket headers weigh significantly less than stock. I'm sure they all weight similar amounts. I don't think it's discussed because people choose headers based on other things than weight. Curious if you offered a titanium header, if you could make money on the few people willing to pay for those few extra pounds. Then you could claim a 100% titanium exhaust too...

Sent from my ONEPLUS A5010 using Tapatalk

You're right, I just looked up the ace, surprise to my eyes, 6kg=13.2lb, and that's w its overripe too. The stock header alone is 21lb I guess, that's a nice weight saving.

I just remembered from when I took my stock ones off. They felt heavy AF. You think a titanium header would sell though?

Sent from my ONEPLUS A5010 using Tapatalk

Stock OP is 4.5lbs + header 20.9 = 25.4lbs
Ace is 9.75lbs + OP 3.5lbs = 13.25. So ace is almost 12.15lbs lighter.

Stock CBE is 38lbs so if his is actually 48lbs that’s not doing anyone any favors.

I believe csg mxp touring 86 is 35lbs.

So OP could drop 25+ lbs and gain about 25whp and make his exhaust quieter by making the swap.

Could drop 20lbs off the front just by switching to the AP Racing brake kit. And that's unsprung (and some rotational) mass as well.

Or Wilwood for 30lbs

This may help with your sound problem:
I have the FT86 catted UEL & 2019 TRD SE exhaust. Though it's factory, I felt that the noise can still be a cop magnet. What I've done which is quite effective is I have wrapped the front pipe & mid pipe with Design Engineering Form-A-Shield which is basically a thick yet very light thermal insulation. This absorbed the tonal frequency of the pipes & created muffled the exhaust's mid-high "tin can" note & left what sounded like a bassy hum. My family can definitely notice how much quieter it is in the cabin. If you wrap the muffler/resonator, the sound will definitely be more muffled as this it's the last area where air & the metal reverberate.

Since you're also into weight reduction, have you also tried switching to aluminum/cf drive shaft? It's approx 12 lbs lighter than stock & lets you accelerate faster. Light racing wheels that are less than 18 lbs like Enkei RPF1, Enkei PF01, & Motegi MR140 to name a few fall in that category even at 18x8.5 vs 20 lbs of 17x7 stock will not only help reduce weight but also improve the handling.

Weight reduction
Rear Total -57.5lbs
Remove Spare/tools -30lbs
DIY Rear seat delete kit - 25lbs and reduced in cabin noise
Catback Exhaust -2.5lbs

Middle Total -35lbs
Driver/Passenger Bucket Seats -24lbs
Carbon Fiber Driveshaft -12lbs
Decat FP -1lbs

Front Total -99.5lbs
Wilwood BBK -32lbs
Shorai Battery -24lbs
JDM AC Delete -14.5lbs never used the AC until AFTER removing it just for the fans, worked well.
Ace Header/OP -12lbs
Mini windshield reservoir -8lbs
Beatrush Crash bar -5lbs
Verus Injector covers -4lbs

Total Weight reduction -192lbs

Wheels dropped 3lbs a corner but tires added 3lbs so it was a wash but more grip.

lightweight carbon driveshaft will have no improvement to acceleration (well technically .1%) aluminum one being much larger diameter will actually decrease acceleration and most people notice a noise at higher mph.

Nice weight reduction list. If you get the 12.7lbs exedy lightweight flywheel, you’d be at a nice -200 lbs.

Thanks.

If me and OP had manuals then LW FW for sure.

LW FW only “rotational” mass of value beyond static weight loss.

At 6'0 230 i know the easiest and yet hardest weight loss mod.

Wilwoods are lighter than AP Racing?

Wilwood 4R are 32lbs lighter then stock. Not as good of brakes as AP, but also a lot cheaper and the lightest. Solid upgrade still like. Doesn’t change brake bias. For a DD it’s very good or an NA track build that’s had some solid weight reduction.

This setup was the same output sound-wise as stock, and shaved about 13lbs vs stock.

https://www.ft86club.com/forums/showthread.php?t=103338

Is it worth the money? Up to you. For me, it is an idea setup to run WHATEVER exhaust you want and only get the exhaust noise out of the setup, no header penalty.

Is this the kit you are talking about?

https://www.wilwood.com/BrakeKits/Br...eza&option=WRX

I can only see the Wilwood 6R for the front actually listed for the 86/BRZ, but FTSpeed says that the 2003 WRX Wilwood front 4R kit should fit.

These look like a screaming deal if they actually fit and don't change brake bias.

https://www.ftspeed.com/part/140-919...E#.X-fRMOQ74lQ
SKU: 140-9193-230-10425
I picked these up for 950$ during a sale.

You do need Wilwood Brake Flexline Kits 220-7009
https://www.summitracing.com/parts/WIL-220-7009

To make it 100% bolt on.

Lots of people running these.

Very little change in brake bias. Good read here.

https://www.pointmeby.com/2016/09/24...z-frs-gt86-86/

Are you kidding me, that was probably one of the best mods I've done! I went with the Versus carbon fiber driveshaft and my speed picked up tremendously...the whole car just felt snappier too by getting rid of that 2 piece design, better throttle response. Compared to the old OEM driveshaft, that thing was a Heavy SLUG! If that was the only thing you changed, you probably wouldn't notice much. But once you get lighter rims, driveshaft, drop some weight, things start to add up fast! I would NEVER go back! As far as sound, I hardly notice anything except for maybe a slight, hum at low speed. The aluminum one is definitely louder.

And you are happy with them?
I fitted once the Wilwood 6 pots on Impreza GT MY00 and they were very flexible, brackets and calipers, although much lighter than everything else.

These look perfect, almost no change in bias. This is a legit BBK for $1000. Do the 2003 WRX rear brakes also bolt on? I see Wilwood makes a similarly priced kit for the 2003 WRX rear brakes:

https://www.wilwood.com/BrakeKits/Br...eza&option=WRX

The rotors on that rear kit are actually slightly larger than the fronts. Not sure what that rear kit would do to the bias, either.

Mike_ZN6: twins stock brakes are that of wrx (rears IIRC legacy GT). If that kit is made to work with stock rears, it should have same bias. But wrx definitely has different weight distribution, so fitting also rears imho will fsck up bias from right one way too much.

Suppose it depends on goals/driving style. Gotta imagine it would push bias rearward right (adding BBK up front almost always moves bias forward)? Maybe moving the bias rearward is desirable for someone. Might just neutralize the forward bias of a BBK up front too

Sent from my ONEPLUS A5010 using Tapatalk

So just the front brakes are the same as WRX? And the rears are the same as the Legacy GT? That's too bad, I don't see a rear brake kit for the Legacy GT from Wilwood. I wonder if there is a different Wilwood Dynapro rear kit that would fit and maintain factory bias while also costing about $1000.

Why are we even talking about brakes in here?

Maybe check Brembo or Project Mu. Some other manufacturers ya know

Sent from my ONEPLUS A5010 using Tapatalk