Magnaflow
FormerVendor
Joined: Feb 2007
Posts: 29
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From: California
Our kits definitely open up exhaust flow. The mufflers we use are of straight through design which allows the exhaust to flow as freely as possible. The kit we offer for a 99 trans am 5.7L for instance, part # 15684, opens up flow for gains of 18 HP and 15 ft/lbs tq on a stock vehicle.
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Verdad Gallardo Our kits definitely open up exhaust flow. The mufflers we use are of straight through design which allows the exhaust to flow as freely as possible. The kit we offer for a 99 trans am 5.7L for instance, part # 15684, opens up flow for gains of 18 HP and 15 ft/lbs tq on a stock vehicle.
^This. It's probably the best "crossflow" muffler on the market for these cars but not the best flowing when compared to others. The only thing about Magnaflow is their fitment is hit or miss. You should search on that one. Some people have no issues and others do. I ordered a Magnaflow kit and hated it. Not because of the flow or sound but because the fitment sucked so bad. My tail pipes were crooked and I couldn't fix them. No matter what I did the system would rest on the panhard bar and always rattled and I just got tired of dealing with it. If I were you I would just spend the extra $90-$100 or so and order a GMMG. I originally wanted a GMMG and couldn't afford it so I settled on the Magnaflow. Never again. And this is all just IMO. Good luck OP with whatever you decide.
Flows really well, but dam is it tame, with my stroker and big cam it sounds stock, little disappointed bc of that but whatever, mine fit very well and looks great, i think they should offer diff types of mufflers so you can pick the sound you like
Last edited by Blackbird-WS6; Oct 27, 2012 at 11:01 PM.
Magnaflow has been making good exhausts for a long time. They are one of the better manufacturers around and their prices have always been reasonable compared to others. I've never heard anyone say bad things about Magnaflow products.
Good luck.
Good luck.
