I have the Dynomax Super Turbo and I'm fairly pleased. One thing to consider is how much work your going to do to the car. If your going to do some mid to heavy mods open the exhaust up with a bigger system. I went from the stock 2 1/4" system to a 2 1/2" system because I knew I was going to be modifying my car as much as moola permitted. But, when you open up the system you will lose some torque, until you do more mods (throttle body, MAF, intake, heads etc.). Best performance increase would probably be from headers and an aftermarket h or x pipe and they would also definitely make the sound much more aggressive. I would probably go with the flowmaster three chamber system if I was to do it again, unless I could afford the Borla system.
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91 LX 5.0
Z t-5, 3:73 gear, Vortech 73mm Mass Air, Accufab 65mm TB, BBK underdrives, Crane HI-6S Ignition, BBK unequal length headers, Bassani x pipe, 2.5" Dynomax Super Turbo cat back, Kenny Brown Super Subs, Factory Five Control Arms, Mac cold air kit and more to come!
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