Magnaflow vs Flowmaster for 383

**OFDPOS** · 12-21-2011, 12:21 AM

Originally Posted by Ironroad9c1

no such thing as a good sounding flowcrapper.

To each their own ...

I had a 92 GMC 5.7 RC 2 wheel drive , I had a flowmaster dual out the back with 3.5 tips on it.
Drove it every day to work a whole 1.2 miles away for 5 years , then sold the truck to my buddy , he's had it now for 2+ years , looks and sounds as good as it did the day I had it put on.
My only complaint about it was a drone noise at 75 MPH ...
But dam it sounds good !!!
I can't really say what got the best bang for the buck ?
I had the TB spacer put in , replaced the stock air filter with a K&N, took the stock snorkel accordion looking pipe off between the air cleaner housing and inner fender and removed the hour glass plastic piece inside it , re installed it. Then had the flowmaster installed.
Seat of the pants dyno; big difference from right off the line, especially cruising at 60 and floor it to pass it pulled great..

These videos of just sitting there hitting the throttle , most exhausts sound bad , need to hear it under a load !

**ChevyLs1z** · 04-23-2012, 07:36 PM

I have always ran flowmasters...I have super 10s now and love them...but I have heard good things about magnaflow

**96Bowtie_z71** · 05-13-2012, 07:39 PM

Just about every flowmaster ive heard sounds like tin can piece of s**t. Magnaflow has a better performance sound to me..

**PA.REDNECK** · 05-27-2012, 11:15 PM

I have a flowmaster 40 on one of my trucks and it sounds good, good and loud when you get on it but has a nice mellow tone at highway speeds. The only problem is if I really floor ir it is too high pitched, this is because it is a v6 of course but I have heard magnaflow's on the same engine and they sound better, they have a deeper sound

**Jmac72** · 05-29-2012, 08:37 PM

Both are over priced.My flowmaster rusted out in about 2yrs.I put on the summit brand muffler.Sounds just like the flowmaster,and has been on there 3yrs so far.Plus its about 1/2 price.