The muffler discussion, here, only here.

[Bob Holmes]

Instead of 100s of threads about mufflers, I'd like to see if we can concentrate that info, and inquiries, so let's keep the muffler discussions to one thread. Please post your questions and experiences here.

I'm about ready to pull the trigger on a DynoMax VT. I had a Moroso spiroflow on the Hoser (RIP) and until I put a bunch of insulation on the floor boards and wheel well, and extended the tail pipe out behind the bumper, it was ridiculously loud. So loud, that before all that work, I had to pull of the freeway drive to Knott's 2011 and buy a set of ear plugs.

I purchased an Holley aerochamber, but screwed up and purchased a central to central inlet/outlet arrangement. It isn't going to work, so I'm going to take the opportunity to try the VT instead. It has the internal flapper valve that diverts exhaust flow through the dampening when at low exhaust pressure, but opens up to a straight through when you get on it. There are two flavors, over/underer 4 liter. In correspondence with the Dynomax folks, I've decided to go with the over. It'll provid for more dampening during normal operation. LOL, I must be getting old.

Bob

[Keasbey]

I have the Hooker Maximum flow mufflers with tailpipes on the svo, the exhaust tone is nice, but this is still loud in the car..

[blueboss]

I've got the Borla ProXS. Sounds real good, no drone.

[Duck]

3" Magnaflow with a turndown in front of the axle. I think it sounds good, but the drone is bad because of the turndown. It's not that loud, either. This is the full size muffler, not one of the glasspack styles. I need to make a video.

[AKA BB]

Most compliments I ever got from my SVO sounding Awesome was when I was running Spintech mufflers. 3" in/out but the smallest version they make. Cheap at only 65.00 each, chambered not baffled ... Many people thought I had the idle just set to high on my V8

[Patrick]

... Many people thought I had the idle just set to high on my V8

AKA BB is banned for sticking a V-8 in his SVO rather than a V-12 or H-16.

[MikeFleming]

I think one of those BMW M5 V-10 5 Liter engines would be pretty spiff - especially with that 7-speed SMG box behind it.

[AKA BB]

AKA BB is banned for sticking a V-8 in his SVO rather than a V-12 or H-16.


DANG IT, not Again....

[Bob Holmes]

I had one guy ask me if I had a 460 in the SVO when it had the Moroso Spiroflow. Imagine his surprise when I opened the hood.

[evintho]

I run a 3" Dynomax Ultraflo and I love the sound! It's got a nice rumble to it. Picked up a couple of 'em last year when SummitRacing had a blowout sale - $19.95 each! Put one on my TC also. With turbo motors, backpressure is your enemy. These mufflers have a basically straight through design which keeps backpressure to a minimum.

http://img.photobucket.com/albums/v356/evintho/Misc%20photos%206%20-%20Feb%202012/ultrawelded_lg.jpg

[86svo9l]

I know there is a lot of hate against the flowmasters, but I run a 3" downpipe into a 3" midpipe, from there it goes into a better flowing split and into a flowmaster catback. It has a nice mellow deep sound and most people who have heard it seem to agree it sounds great for a four cylinder. No drone or anything inside of the car.

[Chalky]

I have a Flo-Pro "Max" on my car. 3" in/out, full stainless construction. Has a nice deep sound but doesn't drone.

[oneowner88lx]

We run the Dynomax Ultra Flo on my son's '88 LX. Does a good job of quieting it down and zero power loss. You can see some pics of the exhaust here: http://billsgarage.info/MustangMods.html

[03shkr]

I have 2-1/2" with Magnaflow #10416. Sounds OK. I'm hoping it will have a little more roar when I get the boost cranked up

[dagenham]

I am also running the Dynomax ultra flow ss. The exhaust is 3" from the turbo to the muffler and the muffler and over the axle is 21/2" without a cat. It has a very distinct sound when you get on it. Somewhere between a whistle and a scream. The car has a very nice sound I think.

[turboj74]

I am running 3" back to the center of the car,then splits off to a Magnaflow 2.5" system. I love the sound and does not drone at highway speeds.
http://www.youtube.com/watch?v=1X-s24ttqLA&feature=plcp

I also installed a 3" Quicktime performance exhaust cutout that exits under the drivers seat. Still love to hear that open downpipe!
http://www.youtube.com/watch?v=fJf4mqt2cUw&feature=plcp

Jason

[brownsvo]

I may be the only person ever to be running an SLP LM1 catback (drivers side only) on my SVO. at the moment its catless and just expanded off of the 2.25in dp. (2.5in) catback

I plan to swap out the fuel pumps for fuel pump and put the other side and finish it off with a home made 3in downpipe.

http://s243.photobucket.com/albums/ff259/brown7_8805/?action=view&current=2012-04-22_13-36-01_827.mp4

[86svo9l]

Heres a clip of my car.


http://youtu.be/lWISYKg67no

[turboj74]

86svo9l: That sounds really good. I ran flowmasters on my SVO with a Stinger 3" downpipe and 2.5" Stinger exhaust system back when the motor was mostly stock. I loved the sound.

[86svo9l]

Thanks! I have went through a few different exhaust systems and this is my favorite so it gets to stay.

[StealthVO]

I have the full stinger drivers side single exhaust with a summit racing turbo muffler. Its not very loud and it has a deep tone with no drone. The only thing i wasnt happy about is that it drops in diameter inside the muffler to 2'' or 2.5''. I just purchased a dynomax like the one pictured above but havent installed it yet.

[Stinger]

I have the full stinger drivers side single exhaust with a summit racing turbo muffler. Its not very loud and it has a deep tone with no drone. The only thing i wasnt happy about is that it drops in diameter inside the muffler to 2'' or 2.5''. I just purchased a dynomax like the one pictured above but havent installed it yet.

Yeah, unfortunately the industry adopted the "turbo muffler" nomenclature for a muffler design that is about as turbo unfriendly as possible.

[Art Vandelay]

I like my 3" MagnaFlow a lot. I bought a Flowmaster 3" tail pipe set, used the driver side only, and sold the passenger side to someone on TF.

[RonJ]

My 86 SVO is running a high flow cat and 2 Hooker maxium flow mufflers.The engine is mostly stock except for a HR276 cam with 470 lift from Racer Walsh I have people ask all the time if it's a V8 cause at idle it sounds like a 5.0 with the old B303 cam that Ford used to have.It's not loud and has just a very slight tone at highway speed to let you know something is there.

[brownsvo]

How much work is the 3in tailpipe to put in? my 2.5 was a pita, but i think it was mostly because it was the wrong year.

Im on the fence about 1 3in tail, vs a traditional 2.5, as i dont have time to swap out the fuelpump yet. goal is 300 rwhp

[Meotchh]

If it is a well formed mandrel bent 3", it isn't that hard. Find the right shop to make the pipe, otherwise you'll be in for some trouble.

[brownsvo]

I ordered a generic muffler , and a 3in tailpipe from stinger. Should be fun

[Lanes84s]

I have been going with a strait pipe ending right below the drivers side seat for over 3 months....I have the pipes but everyone is too lazy to bend 3" so this weekend we are dropping off the SVO for my 3" exhaust to be placed on from a professional...I'll post 2 vids, one of the before sound and one of the after sounds

[BrianM]

Here is a video of my 3" into dual 2.5". Stinger downpipe, midpipe and Y with Magnaflow mufflers. Stock motor except for the intake.


http://www.youtube.com/watch?v=prinK0c4ZfU&feature=youtu.be

[SVOJOSH]

dual 2.5 magnaflows with tail pipes and no cat super quiet on the 86 on the 84 3" flow-pro max with turn down super loud its getting changed I hope.

[Stinger]

dual 2.5 magnaflows with tail pipes and no cat super quiet on the 86 on the 84 3" flow-pro max with turn down super loud its getting changed I hope.

The tailpipes vs turndown are the biggest thing that makes the first setup quiet and the second loud. Turn downs = loud in the car.

[Bob Holmes]

Agreed completely. Biggest interior quieting strategy is to get the exhaust to exit out from under the car.

[Chalky]

Anyone tried the Magnaflow Magnapack's???? They look cool and sound sick on the V-8's. similar to a '65 K code Arvinode system.

[Stinger]

Anyone tried the Magnaflow Magnapack's???? They look cool and sound sick on the V-8's. similar to a '65 K code Arvinode system.

Since Magnapack's aren't offered in an offset inlet/outlet configuration, they can't easily be used in the stock muffler location. They would need to be elsewhere in the system. Most likely at the end of the tailpipe or in front of the stock muffler location next to the driveshaft.

[Chalky]

Oh well, looks like I'm going with regular SS Magnaflows or Flo-pro's then, don't think I can be bothered making an adaptor elbow. I have a polished SS XL performance muffler from my old single 2.5" LX system but they dont make them anymore so i cant match it. Thanks mate:):):)

[stott]

i'm wondering what a cherry bomb/glass-pack would sound like on these motors.

i'm considering a different muffler when i get around to remedying my exhaust turn down.

[Bob Holmes]

I used a Moroso spiroflow for several years. Loud, very loud. My buddy two country houses away could hear me fire up to pick him up for the Saturday coffee run.

[Ford Builder]

Am running the SS magiflow 2.5 in and out front to back , sounds great.

[Ford Builder]

Here is a video of my 3" into dual 2.5". Stinger downpipe, midpipe and Y with Magnaflow mufflers. Stock motor except for the intake.
http://www.youtube.com/watch?v=prinK0c4ZfU&feature=youtu.be Sounds great I like it not to loud nice clean sound.

[stockman1]

this maybe a bit off topic however what issues would one experience with a turbo car and too much back pressure from say a clogged cat converter?

[Bob Holmes]

Old cats are bad. You want your turbo exhaust to be as free as possible.

[frito bandito]

I run a Hooker Aerochamber on my SVO and would not run anything else...on anything. 4 cyl, V6, V8...these are the best mufflers. I have run Magnaflows too and like them but Aerochambers just plain sound better.

[notacarlo]

I got nuthin....literally. Straight 2.5 turbo to tail pipe. Sounds like a very angry lawnmower in a pissing match with a peterbilt.

Aerochambers very soon. I'm sure anyone thinking of buying this car would cringe at the sound.

[NY eric]

I got nuthin....literally. Straight 2.5 turbo to tail pipe. Sounds like a very angry lawnmower in a pissing match with a peterbilt.

.
That about sums up the Mac 3" pipes and muffler I have on my car. I miss my borlas.

[MikeFleming]

I miss my borlas. A Borla system does sound nice!

[84svounoh]

Which magna flow mufflers are you guys running? And how are they ran in the system?

[BrianM]

I am running the 11236 which is 2.5" offset inlet and outlet. The mufflers attach directly to Y and the tails.

Look at Stingers site here: http://www.stinger-performance.com/stockparts.html Scroll down and you can see how it all goes together.

[84svounoh]

Isn't that a chambered muffler

[BrianM]

No. Magnaflows are a straight through design.

[SnakePlisskin]

Good thread! My new 86 has flowmasters on it, boo. A muffler I used on my 90 GT Cobra clone back in NY was the Dr. Gas race quiet muffler,OMG these are awesome! Under normal cruise just a mild sound, but when you got into it they were awesome sounding! These will go on my 86 in near future!

[brsvo]

A little off topic but can I put my new 6" flex pipe in the down pipe? Also what is your favored clamping system? V band, flat band clamps or traditional.

[tommyb]

I have never seen this done but I suppose it could be, I cut my downpipe off short (polished SS downpipe from Merkur depot) and welded it to the end before the aftermarket Cat. I have to do my other car this summer let me know how it goes, the flex pipe came with traditional clamps attached.8900

[Under Pressure]

I have a 2 1/2 inch single exhaust with a Cherry Bomb muffler. It's not too loud and sounds good on the boost. I have it posted on YouTube. www.YouTube.com/watch?V=q118su2v6cl

[indysvodave]

3" Robs elbow, 3" ETS downpipe, into MAC 3" single muffler/tailpipe
Not sure this link will work...

https://www.facebook.com/IndianaDave888/videos/10212754281314260/

[MikeFleming]

3" Robs elbow, 3" ETS downpipe, into MAC 3" single muffler/tailpipe
Not sure this link will work...

https://www.facebook.com/IndianaDave888/videos/10212754281314260/ Requires a FB login.

[indysvodave]

OK. How about this
https://youtu.be/lREP0grx4LU