Best flowing mufflers

any muffler without "chambers" or baffles will flow more.

jas142 said:

We all debate sound, but what about the best flow? The flowmasters look restrictive as hell. Do magnapacks actually make any more power then flows?

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Yes. If you go to another mustang website, www.corral.net, they have a project car called "Mongoose," where they put on a Magnaflow catback system on a stock car, and gained 10hp and 12lb/ft of torque if I remember correctly. My SOTP feel is that my car gained a little after adding a Magnaflow catback system.

I have always been told that dynomax flows better than any muffler.

I don't think you're going to find much, if any, difference on a car that's not pushing major boost. I don't know how someone on corral picked up 10HP on a stock car.

Either MM&FF or 5.0 had a muffler comparison a while back. They tested a whole bunch of mufflers and have power and sound comparisons

Volldamort said:

Either MM&FF or 5.0 had a muffler comparison a while back. They tested a whole bunch of mufflers and have power and sound comparisons

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You're right, I have that issue (Dec. 2002). It's all there in black and white ... ALL the mufflers were within roughly 2-3 HP of one another so don't get your hopes up too high about having the best one. Bassani's Real Street did take the trophy out of all of them though ... not bad for $186 a piece, huh?

What pi$$es me off is that the muffler Flowmaster sent them is NOT the one used in the American Thunder (Delta 40) that 99% of us here happen to have. Why the hell did Flowmaster send an SUV muffler in for their test? What are they trying to hide? They KNOW damn well what most of us have on our cars and they pulled that $hit.

I'm going to get the FRPP kit. From what I've seen theirs pros and cons to each system. I went to a local dealers website and they said it was made by ARVIN for Ford racing.

SLP loudmouths are the least restrictive on the market right now

Dyno Max are pretty good.

http://www.quicktimeperformance.com/qtec.htm

get cut outs and quit ****ing around

gobaby, when is the car giong to be out of the shop?

Im gonna say Dynomax, Magnaflow, and SLP are the best right now. Chambered designs actually employ more restrictive airflow to create that deep and mellow tone all Flowmaster owners love.

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).

my magnaflows go straight through with no chambers or anything in the way, so i suspect the little buggers flow pretty well.

OK 95snoozer, did the article compare them to stock?