Updated exhaust setup

[craiggroves91]

3" just a bit more top end, but definitely less mid-range and low-end then the 2.5". The 3" was also considerably louder then the 2.5".

I would add either an Ultra-Quiet resonator, or a middle muffler, as the Vibrants are loud to begin with.

Saw this after I bought my stuff, but I ended up going with a Vibrant Ultra quiet resonator and Vibrant stealthpower muffler!

Should sound pretty mean

[giantkeeper]

Vibrant setups make sexy noises!

[e30polak]

I'm shopping for my s52's exhaust right now.
Was there any advantage to 2.5" piping over the 3" piping?

Would straight from exhaust manifolds (stock s52) to a vibrant streetpower stealth be ridiculously loud?

Should I at least add a resonator in the middle?

3" just a bit more top end, but definitely less mid-range and low-end then the 2.5". The 3" was also considerably louder then the 2.5".

I would add either an Ultra-Quiet resonator, or a middle muffler, as the Vibrants are loud to begin with.

[craiggroves91]

I'm shopping for my s52's exhaust right now.
Was there any advantage to 2.5" piping over the 3" piping?

Would straight from exhaust manifolds (stock s52) to a vibrant streetpower stealth be ridiculously loud?

Should I at least add a resonator in the middle?

[Lof8]

Well, I just ordered the flowmaster Y, V band clamps, Borla, and Vibrant mufflers to copy this exhaust system. I couldn't handle the rasp of my setup anymore. I hope I get the same good results.

[e30polak]

I've been looking at all kinds of different options for a custom exhaust. I'm currently leaning towards this 24" Aero Stealth muffler, or perhaps a similar 18" Thermal Research muffler for my midpipe.

http://www.verociousmotorsports.com/Shop-by-Category/Aero-Exhaust-Mufflers_2/Aero-Exhaust-Stealth-Muffler-S217

http://www.horsepowerfreaks.com/partdetails/Thermal_Research/Exhaust/Mufflers/Universal/5166

How long can the mid muffler be on an e30 before you run into fitment issues?

I might pair it up with this Megan Racing 2.5in/dual 3.0"out flat black muffler that looks pretty nice. Has anybody ever heard a Megan muffler? I'm looking for a deep but not overly loud tone.

http://www.meganracing.com/product_detail.asp?prodid=1283&catid=21

I'm considering testing out a few of these pieces on behalf of the community. I know the smart thing to do is to simply follow Polak's secret recipe but I just can't let him have all the fun!

That Aero muffler is too big and heavy, and will cause fitment issues as a center muffler/resonator. If you don't go with the Borla, then go with a Vibrant Ultra Quiet resonator (http://www.verociousmotorsports.com/...uiet-Resonator) in the middle, paired with 1 of the following 3 end mufflers for a nice tone:

1. Vibrant Street Power (Higher pitched, slight rasp)
2. Borla Pro-XS (Deeper and less raspy then the Vibrant)
3. Flo Pro MAX muffler (Deepest tone I've heard on a 24v motor)

[johnjohnsons54]

I've been looking at all kinds of different options for a custom exhaust. I'm currently leaning towards this 24" Aero Stealth muffler, or perhaps a similar 18" Thermal Research muffler for my midpipe.

http://www.verociousmotorsports.com/Shop-by-Category/Aero-Exhaust-Mufflers_2/Aero-Exhaust-Stealth-Muffler-S217

http://www.horsepowerfreaks.com/partdetails/Thermal_Research/Exhaust/Mufflers/Universal/5166

How long can the mid muffler be on an e30 before you run into fitment issues?

I might pair it up with this Megan Racing 2.5in/dual 3.0"out flat black muffler that looks pretty nice. Has anybody ever heard a Megan muffler? I'm looking for a deep but not overly loud tone.

http://www.meganracing.com/product_detail.asp?prodid=1283&catid=21

I'm considering testing out a few of these pieces on behalf of the community. I know the smart thing to do is to simply follow Polak's secret recipe but I just can't let him have all the fun!

[e30polak]

Also, totally forgot I never posted the vids of this exhaust on the dyno when we were messing around at RMS one night. :p

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

[e30polak]

Glad you like my proven recipe Josh! It's always nice when someone finds the right combo!

[BBDirtbiking]

Anybody wanna share with me where I can buy that y-pipe?

http://www.amazon.com/Flowmaster-Y200250-Scavenger-Series-Collector/dp/B000CEG2LA/ref=sr_1_4?ie=UTF8&qid=1341520605&sr=8-4&keywords=flowmaster+collector

This is where I got mine. Lines up pretty well, I think I am going to shorten my headers a bit, this should give it a much more snug feel. If not, just fill it with weld! Haha.

[M3PO]

Anybody wanna share with me where I can buy that y-pipe?

[Jand3rson]

it might possibly be quieter, i have 3" with a borla/dynomax and it's pretty much silent. I don't know how the vibrant compares, but I like the tips.

My 2.5"/Borla/Vibrant combo is pretty quiet, almost silent at idle, very quiet at cruising RPMs, only loud when you REALLY get on it, and then it sounds sooooo good.

And I love the tips on the Vibrant, one of the best parts of it. :)

[nando]

My good friend just returned home with an m50 swap he purchased in WA. The previous owner has put on a custom 2.5in exhaust with two magnaflow mufflers. We took it for a spin tonight and it actually sounded way better than expected...nice and deep, a little bit of rasp higher up.... and it wasn't overly loud from inside the car. I was honestly surprised at how decent it sounded.

Would it be correct to assume that that a borla/vibrant combo would probably run a little bit quieter than a dual magnaflow, or just sound better at a similar decibel level? Youtube clips do these set ups no justice whatsoever!

Does running catless on these motors actually make noticeable power with the proper tune or is it usually just a matter of of a simpler build?

it might possibly be quieter, i have 3" with a borla/dynomax and it's pretty much silent. I don't know how the vibrant compares, but I like the tips.

catless isn't going to do anything for you.

[johnjohnsons54]

My good friend just returned home with an m50 swap he purchased in WA. The previous owner has put on a custom 2.5in exhaust with two magnaflow mufflers. We took it for a spin tonight and it actually sounded way better than expected...nice and deep, a little bit of rasp higher up.... and it wasn't overly loud from inside the car. I was honestly surprised at how decent it sounded.

Would it be correct to assume that that a borla/vibrant combo would probably run a little bit quieter than a dual magnaflow, or just sound better at a similar decibel level? Youtube clips do these set ups no justice whatsoever!

Does running catless on these motors actually make noticeable power with the proper tune or is it usually just a matter of of a simpler build?

[Jand3rson]

For a real ceramic coating you need to take it to a shop, they run usually around $200 for an inline 6.

Most powdercoat/ceramic shops charge by the foot. I paid $14 per foot of pipe. Measured from the flanges all the way down each pipe to the collectors, then from the collectors to the ends of the Y-pipe, ended up costing about $160, and then to do the insides was another flat fee of $30.