gomer

iTrader: (13)

I'm going to go ahead and do true duals on my car. I've narrowed the muffler choice down to two. Either the 9430109 1 chamber Flowmaster Race mufflers, or the Edelbrock 5505 mufflers. Both are center in and out 3in. The one thing I like about the Edelbrock is that the height of the muffler is 3.625 inches where the flowmaster is 4 inches. The edelbrocks are a little longer than the flows at 15in vs. 6.25in. I know what the flowmasters sound like and I'm pretty sure they give up a little on flow to the edelbrocks. But I'm really worried that if I went with the edelbrocks they would be TOO loud. Anybody here running them? If so, let me know your thoughts. Are they louder than the 1 chamber flows?
Thanks
Scott

SouthFL.02.SS

I've seen a setup with Edelbrock RPM mufflers. Yes, the 3 5/8" height is a great thing.

gomer

iTrader: (13)

I did a search and found some pics of a sweet setup using the Edelbrock muffs... I'm just wondering which would be quieter during normal driving. The edelbrocks or the 1 chamber flows?

SouthFL.02.SS

True Dual Muffler flow and dB comparison, Hooker Maxflow & Bassani Real Street?

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The results in HP order:
1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.Hooker Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.Hooker Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq

Sound Off in Quietest to Loudest (Decibels):

1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

SouthFL.02.SS

I have the Flowtech Afterburners and they are pretty loud.

Y2KSS

iTrader: (2)

The advantage of the 1 chamber flowmaster is that you can tuck it up in front of the rear axle because of the length. My X is a little lower than the mufflers are.

gomer

iTrader: (13)

I came across that flow and Db sheet when I was searching around earlier. I've done some more checking and it seems like the Magnaflow #11229 would be a good choice too, it is 9in wide, 4in high, and 14in long. It is a center in/offset out 3in. Anybody ever use one of these?

FAST LS1

iTrader: (2)

If you want a quiet muffler look at the Borla Pro XS, it was very quiet in that comparison and still made almost the most hp.
http://www.borla.com/proxs/pages/muf...269.11.159.248
It's only 14" long 4" tall and 9 1/2" wide.

I'm in the same situation, the flowmasters are nice because they're so small but I know they drone at cruising speeds in 5th and 6th gear. The Edelbrocks are nice and thin but they're long and kind of restrictive compared to the Borla or Magnaflow. Right now I'm down to either the Borla Pro XS or the Maganaflow. I'd like it to be a loud at wot though so I might go with the Magnaflows. If you decide on going with the Magnaflows pm me, I found a place that sells them $5 a piece cheaper than jegs.

SouthFL.02.SS

Oh, one last thing Gomer, the offset designs are a bit easier to setup.

gomer

iTrader: (13)

Well.. I've pretty much talked myself out of the flowmasters, I know they will be too loud at cruise speed.. especially after I install the 12 bolt with 4.10's. It will be between the edelbrocks or the Magnaflows. The edelbrock has a plus..it is thinner. The magnaflow has my attention because in the Db chart it is considerably quieter than the Edelbrock... Damn these mufflers!! I'm going to waste more time at work and do some more searching.

NOBR8KSS

iTrader: (12)

I used the 14" Magnapacks ... nice muffler. Pretty dang quiet at idle ...reasonable at cruise, although there is a very mild drone ...and very nice at WOT. Tone is very deep. My exhaust is about the same volume as my SLP Loudmouth setup with stock manifolds...but the tone is much better.
I have a 2.5" setup with x-pipe and turn downs angled 45 degrees out. I will e-mail you some pics of ground clearance.

gomer

iTrader: (13)

Thanks
send the pics to sculbert1@netzero.net

FAST LS1

iTrader: (2)

Just to clear something up "MagnaPacks" are like bullets, 4x14" round mufflers. The Maganaflow oval mufflers are probably more quiet since they are larger and are actual mufflers.

Birdie2000

iTrader: (15)

Where are these pics of the sweet Edelbrock setup? I'd love to see them!

SouthFL.02.SS

http://www.chitownsyty.com/gallery/v...album25&id=aai

FAST LS1

iTrader: (2)

Does he have any sound clips of his exhaust?
http://www.chitownsyty.com/gallery/v...album25&page=1