i aint no expert which is why im here so which is better?

dynomag 3" in / dual 3" out

or
v-force 3"in /dual 2.5" out

thing is i cant seem to find ANYTHING anywhere on the name "dynomag"

 

never even heard of it.....

 

"Dynomax" maybe?

 

im pretty sure it wasnt dynomax. although it almost sounds like it has to be... the other thing is i can find any 3" in dual 3" out dynomax muffler either...

anyways is v-force pretty good?

 

I havent heard much about V-force, but I dont think I've heard anything bad.

I know Dynomax makes good mufflers... good performance, and a fairly 'stealthy' sound compared to others, like Flowmaster or Hooker.

 

Flowmaster is the biggest company...most money for research...best sounding in my opinion...

 

You'd think if they had so much money for research that they could produce a muffler that could flow decently.

I say skip both of those and go with an SLP muffler

 

Coming from someone with experience running 15's

 

If you have ever read any david vizard books, he explains how straight through (glasspack) style mufflers do not flow as well as flowmaster style mufflers that are chambered but without baffeling. This phenomenon exists due to the way the exhaust pulses. Frankly, Ive found that unless you are running over 400 horses, the type of performance muffler doesn't seem to matter as much as the diameter of the exhaust. This being said, choose whatever you think will sound better. If you like rasp, go with a performance muffler with baffeling (straight thru will be the loudest, obviously). If you like rumble, go with an open style chamber muffler such as a flowmaster.

 

so bigger = better?

 

All else being equal, yes.

 

Dynomax 3 inch in dual 3 inch out part # 17670 and part number 17536.

 

anyone know of a muffler other than flowmaster and borla that has a 3 inch in and dual 2.5 out exiting on both sides?
Thanks Randy

 

my new exhaust that i just bought except mine is alot bigger 4-inch back to 3 inch dual outlets. Go Spintech!

 

glasspacks vs straight through mufflers are two different types of mufflers

straight through are just that straight through with a perforated core

glasspacks are a taper style muffler. larger at one end then the other with lots of little baffles in there that don't help performance out any. so yes I guess they are straight through just without the straight through performance

as far as flowmaster I still dont' see how they woudl flow better then a TRUE straight through muffler would. the little chamber in there I would think would slow airflow down since it now has to redirect itself around the the muffler. kinda like the old turbo mufflers just maybe not as bad.

straight through muffler would be able to keep exhuast velocity up or so my thinking tells me

 

within limits
you go too large and the exhuast isn't able to keep up velocity.

some ppl might say you lose backpressure which is hogwash since backpressure is the enemy. it's velocity you are losing

 

try magnaflow

 

Try Banks also.http://www.enginetechandfab.com/store/page49.html

 

My Hooker muffler is just like that. 3" inlet at the front, and dual 2.5" outlets, one on either side.

 

Flowtech afterburner P\N 50363

 

how does the afterburner sound? at idle? high RPM's?
compared to other mufflers?
Thanks

 

He meant that for exhaust systems where the muffler is right after the headers, and a muffler can be used to take advantage of exhaust pulse waves. I doubt that any thirdgen has an exhaust setup like this. Even if chambered mufflers are better, that doesn't say anything about the quality of flowmaster. They still lose on the dyno time and time again.

As far as 3" in, dual 2.5" out crossflows:

Dynomax 17227
Flowmaster 43083
Hooker 21729
Magnaflow 14267
Edelbrock 5509

 

I don't know yet I just bought it and was about to install it probably this weekend. The main reason I bought it was because it was 3" in and dual 2.5" out (crossflow) welded case made of aluminized steel. There is nothing inside to burn and the price was reasonable for me. I hope I wont regret my decision. I'll let you guys know if it's worth it or not.

 

I nearly got one of those too. I actually ordered one in at the parts store I worked at at the time, but never bought it. Its built VERY beefy though.. nice welds, heavy guage tubing and sheet metal... nice muffler. Can't comment on the sound though, never heard it.

The Hooker muffler I got with the catback I just installed is built just as tough, if not tougher (weighs a ton!! and has good welds all over) and the sound... oh man... its pure badass

The Hooker muffler has a nice feature too, in that the muffler inlet (3" btw) uses a 3-bolt header flange to mate it up to the I-pipe. No clamps, and welding is unnecessary. makes installation and removal easy too.

 

Nope...straight from his book. Not just header mufflers.

 

Heres what he has to say. If it is to be mounted to the header, a glasspack will need a longer collecter. Thats all. The book this is coming from is a small blocks on a budget. Not race engines with header mufflers.

 

 

I think an I pipe that goes down the car and over the axle is a long enough collector. Not to mention that the cat is going to be the first thing the exhaust interacts with in our cars. The paragraph you scanned basically says exactly what I was saying. If I were putting mufflers on the headers I wouldn't think twice about using flowmaster, but for this application I think glasspacks are more appropriate.