MAC or Dynomax or Flowmaster

[tecal18]

I am a 1st time mustang owner. I have 93 LX Drop Top 5.0 M/T, I need new exhaust. I want a catback system, a buddy of mine has a 88 GT 5.0 with a H pipe and Dyno max, sounds really good. I just want the catback, Im mostly looking for sound, but not anoyance, its a drop top just wanna go crusing with a decent sounding system..
PLease let me know, with chrome tips a must. HELP
Tecal18

[Orange97GTVert]

Flowmasters sound great on 5.0s, get the 40 series catback with the polished stainless steel tips. There is nothing better for just catback.

[Mach 1]

I had the flowmaster cat back system and hated it. Ity sounded like tin cans dragging behind the car, and the fit was not that good. I took it off and bought the dynomax system. Fit perfect and sounded better.

Go Dynomax!

[mark sweetser]

i've got 2 chamber flows on my 96 gt along w/ bassani cat-x, but you've got a 5.0 so don't take my word for it....But, a buddy of mine had a '90 GT w/ MAC shorties, H-pipe and cat-back, that car sounded great.

Originally Posted by Orange97GTVert

Flowmasters sound great on 5.0s, get the 40 series catback with the polished stainless steel tips. There is nothing better for just catback.

There are several aftermarket exhaust companies that make catback systems that make more power than the Flowmaster & IMO sound much better, and not as loud.

I recently ditched my 2 chamber Flowmasters for the DynoMax super turbo 2.5" catback ssystem. I have an offroad h-pipe so I opted for the DynoMax Super Turbo mufflers as opposed to the DynoMax Ultra Flos. The Super Turbos are much quieter than my old 2-chamber Flowmasters. I picked more power with the DynoMax system too. I haven't dynoed it but I picked up a little more than a tenth of a second in the quarter mile. If you have your catalytic converters in still I'd get the UltraFlos. If you have an offroad h-pipe I get the Super Turbos so that you can still hear yourself think.

[jrgoffin]

Another vote for DynoMax and the Super-Turbo's! The fit is incredible, absolutely no problems, should have come this way from the factory. They are definitely quieter than the FlowMasters I just removed, but the car sure feels to pull harder and sounds great with the x-pipe as well. I was getting tired of the raspiness and since I am getting older, wanted to go back to a more mellow sound. For the price, this kit can't be beat, especially with the SS tips. Have heard a lot of guys with fitment issues when it comes to MAC and FlowMaster, but never have heard one complaint about DynoMax!

[4barrel]

I vote for MAC'S!

[sgwinn]

I also opted for dynomax. got the Ultra flow SS mufflers. The fit was great. Sound is probably more conservative than Flowmax. My 18 yr old son drives it a lot and i wanted to make sure they were not too loud. I love the deep tone; but can so stealth when necessary!

[83GTMUSTANG]

I Have 2 Chamber Flowmasters On Mine There Great But If You Dont Wont It Loud Get Three Chamber Flows . Flows Are The Number 1 Selling Mufflers , Point Proven.........

Originally Posted by 83GTMUSTANG

I Have 2 Chamber Flowmasters On Mine There Great But If You Dont Wont It Loud Get Three Chamber Flows . Flows Are The Number 1 Selling Mufflers , Point Proven.........

Aha-ha! That's funny. You're still stuck in the Flowmaster craze, huh? Flowmaster probably is the number one selling muffler for your average person that doesn't know much about the aftermarket world that is available. And being the most poplular brand of muffler...certainly doesn't mean that everyone should run right out and buy one! Do some research. Flowmaster mufflers DO NOT make the most power. Their desgin is dated. It's not so much a muffler as it is a chamber(s) to get that Dronemaster sound. Magnaflow & DynoMax both make mufflers that produce more horsepower and yet, are quieter. Sure when I was 19 I wanted to have a loud car. But we all know loud doesn't equal fast, lol. DynoMax has my vote. And this is coming from a guy who has ran nothing but 2-chamber Flowmaster on the two Mustangs I've owned. Just in the last few months did I finally get the DynoMax Super Turbo catback system. I picked up over a tenth in the quarter mile from the DynoMax catback. No other mods were done but the exhaust. Again..."I PICKED UP OVER A TENTH IN THE QUARTER MILE"! Point proven....

[jrgoffin]

Just to add to that for reference...

If you look at flow numbers for a straight pipe vs. a straight-through muffler (like a Dynomax Ultra-flow), vs. a Super-Turbo, vs. a chambered muffler (ie., FlowMaster), you'd get #'s something like this (all 2.5"):

Straight pipe: 475+CFM
Straight-through muffler: 450+CFM
Super-Turbo: 425+ CFM
Chambered: 325+ CFM

Of course these numbers all vary from test to test, but it gives you a ball-park idea! I'm still glad I removed my FlowMasters (2nd set) and went to the Super-Turbo's!

[maiden_deth]

i got and off road h-pipe and threw some Borla Turbo mufflers at the end and made it dump offs instead off buying the whole cat back. not too loud but great performance.

Originally Posted by maiden_deth

i got and off road h-pipe and threw some Borla Turbo mufflers at the end and made it dump offs instead off buying the whole cat back. not too loud but great performance.

You're losing some low end torque by running the dumps instead of a true 2.5" tailpipe. I ran turn downs (dump offs) on my car with 2-chamber Flows when I first rebuilt my motor. A year or so later I put tailpipes on because it was so loud I was sick of it...I picked up a ton of torque down low...and gained a little in the quarter just from reinstalling the tailpipes.