i have a 00 gt with long tube headers, off road x pipe and magnaflow exhaust but it sounds so tinny and metallicaly. the sound happens when i am starting to hit around 3000 rpm and then stops at 4200 or so. i think they are 4 inch tips with 2.5-3 inch piping. bought the car with the exhaust on it. would puttin flowmaster mufflers (40 series) make the sound go away or is it cause i basically have truck exhaust tips on.
exhaust annoyances
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That raspiness is mostly due to the X pipe, but you mention Magnaflows... if they Magnaflows are chambered style mufflers that will contribute, but most of it is in the mid pipe. You can go with an H pipe like SoCal said and that should help, I would recommend going with a hi flow catted h, that should give it a much deeper tone, and a lot quieter at cruising speed.
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I had the same annoying sound in my mach and I had flowmasters and I had an offroad H pipe. I took the flows off and put Borlas on and no help. I then had hi flow cats welded in and that fixed it right up. Ten times better sound. It too was now legal (with the cats). The added back pressure actually made the car run faster, by a tenth too. NO LIE!
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Just curious how'd you time it, and 0-60 or quarter?
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The quarter. I went from a 12.02 to an 11.91
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Hmmm interesting. Side topic but you're N/A right, from going off of your sig? As far as running 12 sec.
The cats probably helped bottom end torque and thus your 60', but that's on line with what I've found too.
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The times were in my 04 mach which I sold 2 yrs ago! I have yet to run my GT. It would be nice if it ran 12's!
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Ah gotcha lol. I was hoping to figure out your magic recipe for low 12's in a GT without power-adders :gringreenThe times were in my 04 mach which I sold 2 yrs ago! I have yet to run my GT. It would be nice if it ran 12's!
I've always been curious if my torque would be different with cats by a noticeable amount. I figure one day I'll add a Kenne Bell though at which point I can worry about low end grunt not being a limiting factor.
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I put my stock midpipe back on for a week once every two years for smog testing. What I noticed last spring when I did the back and forth swap was that with the factory pipe, throttle response and torque below 3500 rpms was better than the o/r pipe. But the tradeoff is that the o/r pipe produces dramatically more power at 4K+ rpms, making the lower rpm tq loss vs. the stock pipe (which isn't a lot) quite acceptable.
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