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Since 1964 said:I have the Mac Pro-Chamber O/R mid pipe "H" design with FRP500 cat back and I like it alot. You want to check it out?
ChicagoMike said:I would like to .. but I know the H is very different from the X... hmmm
nytebyte said:I am running the FR500 catback + x-pipe on my car and I think it sounds pretty good.
Like you, I didn't want to go with anything too loud either, but I still wanted a better sound and the performance gains of an aftermarket cat-back.
The FR500 is quite a bit louder than stock, but not obnoxious or annoying. When driving around town or on the highway when the valves are closed, the sound is very good, but low key. There is also very little drone from the FR500.
When you get on it and the valves open up, it gets much louder and sounds awesome.
Also, the FR500's valved mufflers DO NOT rob horsepower. On the contrary, their dual-mode design actually helps maintain low end torque and frees up horsepower on the high end. All dyno tests I've seen with the FR500 on a stock Terminator show a 25 to 30 rwhp horsepower gain.
I made a new link to the audio file with the Cobra and FR500. Everything is stock except for the FR500 catback.
FR500 catback
Here is a link to an article where they test the FR500 on a 2001 Cobra:
FR500 review on 2001 Cobra