24v - Vibrant muffler = Me not happy

[Jand3rson]

A
Here's how my red car sounded with eBay headers, single 2.5" , with a borla pro-xs mid-muffler > the Vibrant:

http://www.youtube.com/watch?v=nS2RJCk_itY

http://www.youtube.com/watch?v=r2H5YreLZqk

Exact same setup I have (I copied his), except my headers are inside/outside ceramic coated, which really dulled them down a lot, and totally eliminated any rasp.

[graphikg]

So right now I have s52 headers>3in piping>magnaflow cat>3 in piping>vibrant muffler.

Think it would be nicer with s52 headers>3in piping>magnaflow cat>3 in piping>borla XS mid muffler>vibrant muffler

[craiggroves91]

Here's an idea of how mine sounds, not great quality, but whatever

2 2 1/2" from exhaust manifolds---->dual 2 1/2" in to single 3" out----->3" in/out Vibrant Ultra Quiet Y-pipe converter----->3" in and dual 3"out Vibrant Streetpower stealth

[fronton]

Exact same setup I have (I copied his), except my headers are inside/outside ceramic coated, which really dulled them down a lot, and totally eliminated any rasp.

Can you elaborate on your ceramic coating? Who did it and what temp coating did you get? I am looking at jet hot sterling right now for s38b36 headers which can get extremely hot in a e30's cramped engine bay.

[ScHpAnKy]

SuperSprint headers, E36 Y-pipe, Universal 10" cat, straight-pipe into magnaflow straight-through

I believe everything is 2.5" after the cat.

[justin_l_]

Can you elaborate on your ceramic coating? Who did it and what temp coating did you get? I am looking at jet hot sterling right now for s38b36 headers which can get extremely hot in a e30's cramped engine bay.

I highly recommend these guys

http://www.ffwdconnection.com/exhaustcoating.shtml

Coatings are amazing.

[Jand3rson]

So right now I have s52 headers>3in piping>magnaflow cat>3 in piping>vibrant muffler.

Think it would be nicer with s52 headers>3in piping>magnaflow cat>3 in piping>borla XS mid muffler>vibrant muffler

In bold is part of your loudness problem. No need for 3" piping on an NA motor. It's actually amplifying the sound.

Can you elaborate on your ceramic coating? Who did it and what temp coating did you get? I am looking at jet hot sterling right now for s38b36 headers which can get extremely hot in a e30's cramped engine bay.

It was done at the same shop here in Bend that does all of my PC work. I don't know the temp specs, I could probably find out. I considered JetHot, but the shipping hassles turned me off. It was much easier to find a place locally. Cost was about $14/ft.

[emmanuel.dlc]

SuperSprint headers, E36 Y-pipe, Universal 10" cat, straight-pipe into magnaflow straight-through

I believe everything is 2.5" after the cat.

can i get the magnaflow part number? i love the sound.

[TimKninja]

Here's an idea of how mine sounds, not great quality, but whatever

2 2 1/2" from exhaust manifolds---->dual 2 1/2" in to single 3" out----->3" in/out Vibrant Ultra Quiet Y-pipe converter----->3" in and dual 3"out Vibrant Streetpower stealth

Oh my gosh

[craiggroves91]

Oh my gosh

haha thats my goober friend. He was giggling like a school girl

[hooken m]

haha thats my goober friend. He was giggling like a school girl

lmao same here with my ones of my friends. i did a nice little slide for him and he was literally a little school girl

[ScHpAnKy]

can i get the magnaflow part number? i love the sound.

14158, I believe? I can't find the PM from the guy I bought it off of here, but it's 2.5" in and out, and about 12" long.

[emmanuel.dlc]

14158, I believe? I can't find the PM from the guy I bought it off of here, but it's 2.5" in and out, and about 12" long.

found that the 14158 is a round muffler, yours is?

Sent from my SGH-T769 using Tapatalk 2

[ScHpAnKy]

found that the 14158 is a round muffler, yours is?

Sent from my SGH-T769 using Tapatalk 2

hmm, in actuality it looks more like the 10416, I'm not exactly sure on the exact model# but the actual muffler is around 12" in length with entirety around 20" in length with a 2.5in and out diameter

[FredK]

^ i'm considering a 3" for my s52 swap for future expandability (read: s54 in a couple years). was 3" too much for a stock s52 in your experience? not in terms of loudness, but rather power/torque.

No. In a typical 6-2-1 E30 exhaust, everything past the last exhaust collector is trivial. Single 2.5 or 3.0 tubing post-merge will have an infinitesimal effect on power.

So what DOES affect power?

• Exhaust primary size and length. People with Racelands are leaving area under the curve on the table as the primaries are HUGE.
• The quality of the merge also has an effect, though it is smaller in comparison. You can't see the quality of the merge from the outside, but if there is poor, bulky welding and bad pipe fitup, you stand to lose a whp or three at the highest flowrates.
• The geometry of your second merge collector (2 into 1) will also affect power-- angle of the merge, the size of the choke, length and angle of the post-choke transition (commonly called a megaphone).

In bold is part of your loudness problem. No need for 3" piping on an NA motor. It's actually amplifying the sound.

It is not amplifying the sound. It is harder to damp the sound as efficiently. By sizing pipe smaller, you make it easier to quiet down an exhaust system from a geometry standpoint--that is, the smaller the piping is, the easier it is to quiet down a system by using smaller mufflers/resonators. So if you have a 3" exhaust, you must choose larger mufflers.