The Spintech kit is nice, sounds awesome, but is WAY overpriced for what little it is. I mean, sheesh, you'd think the stuff was made of Titanium, or something, for what they charge, especially since all you're getting is two flowtubes, two muffs, and two short lil' sidepipes (about, what, two foot long apiece?).
I don't buy into the sharp-turn argument. Has anyone ever bothered to look inside of a baffled muffler, lately? The exhaust gasses have to take MUCH sharper turns going through there - especially in something like a Flowmaster or standard Dynomax Super Turbo muff - and nobody says squat about them. Also, take into consideration that U-turn the gasses would normally have to make to get over the rear axle; same degree of bend (or greater) as the side-exit setup I've described above, and thus the same output.
I think that some folks have got the wrong pathway figured up with the side-exit setup I'm describing. The #17676 Dynomax muffs are SAME-SIDE inlet/outlet design (both fittings on the front end), not the usual offset/offset type with the inlet and outlet on opposide ends of the case (one front, one rear). I'll draw up a crappy MS Paint pic here in a minute to better illustrate the idea. Better still, I need to dig up those old pics of my other notch and take pics of pics (sometimes wish I had a flatbed scanner) to post for this. I've seen setups in the past where someone took a standard front/rear type of muffler and made a sharp 180* U-turn behind the muff, brought it around toward the front, then made another 90* bend (followed by ANOTHER 45* bend) to bring it out the side at a slanted-back angle; what I'm talking about just comes right out of the muff, goes 90* outboard, and that's it (or another 45* elbow back, if desired for looks).
If anyone wants to pony up the bucks for dyno time, I'll gladly do a before/after dyno run with my own car so I can show there is ZERO difference in power between a rear-exit (Pypes Violator) and side-exit (Dynomax #17676) exhaust. Of course, by doing so, I'll also get to have a nice readout of what my car's putting down as-is, too.
