LibertyCRD wrote:
All over the Internet. Just use Google.
I even know of one case where a guy installed a Flowmaster, and lost 20 lb/ft of torque on the Dyno immediately. Again, this is with gasoline engines. I haven't seen many diesel guys use Flowmaster so I suppose the jury would still be out on that.
I have searched the internet. Nobody that I have seen shows ultimate proof it was the muffler. They have changed out other things as well and then blame it on the muffler. On one, the guy had near 800 whp and he lost a few HPs and Lbs, but on a high-perf motor like that, little changes can mean big increases/decreases. It isn't going to effect my stock motor the same. Then, there are the people who just claim certain things with no proof at all. The internet is absolutely full of that garbage.
I have ran Flowmaster mufflers on several vehicles from I4s to V8s and I've never "felt" a torque decrease. If I did, I would have ripped it right off.
I'm not saying that it is impossible and I'm not a die hard Flowmaster fan at all. I am seriously considering the Maganaflow. But I've never had a problem with Flowmaster except for expereiencing some drone on a couple of friends vehicles. Although, they were pushing a good amount of HP with nothing but a little sheet metal in between the muffler and the cabin with a dumped muffler.
I feel that the Magnaflow doesn't give as deep a sound or is agressive, but I know I'm not going to get interior droan. But, I am still considering the Flowmstaer as well because I like the sound better (based on Youtube videos). Magnaflow people aren't putting up good videos or something. It sounds to much like V6 motor in a car that a V6 motor in a SUV. I'm not sure I like that. The videos could be decieving though.
What I really need is for people to explain the difference in the Magnaflow mufflers. Flowmasters website does a great job of listing them in aggression order. I don't get the same user friendly feeling out of the Magnaflow site.