mufflers or not
 

I was wondering what the draw backs (or advantages)were to running no mufflers besides the law. I mean performance wise. I am taking off my stock cats and flows to get a MAC system and for about 2 weeks i will be running no cats or exaust (unless i am told there will be problems)

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1997 Cobra, C+L 80mm MAF, Pro 5.0 shifter, BBK Springs, Taylor Wires, 2 Chamber Flows, 3.73's

You do need some back preasure, for if nothing else, low end torque. Not on a Mustang, but have heard of people burning exhaulst valves running with out mufflers. Too much exhaulst scavenging.

I would go with some sort of muffler.

Don't drive it running straight off the headers. I had mine off from the exhaust manifold back, and it was loud as hell!! It just sat in my garage for a month waiting for my parts. You would be imbarrased to drive it like that. Don't take off the old parts 'til you get the new stuff.

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T-Bones '96GT

'96 GT 5-speed
Roush Cold Air Kit w/ K&N, 80MM Mass Air, Mac Cat-Back, Mac Pro Chamber H-Pipe, FMS 3.73's, FMS 70MM TB, March U/D Pulleys, Steeda Tri-Ax.

I know I should wait, but as you guys know, it's a whole lot easier to pay for new parts with the money from old parts.

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1997 Cobra, C+L 80mm MAF, Pro 5.0 shifter, BBK Springs, Taylor Wires, 2 Chamber Flows, 3.73's

You will definately be getting some strange looks from people.

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'97 Cobra, K&N, Rio Red
3.73s (soon)