Today I ordered SOLO mach CAT & free flo exhaust, and found a shop that will work with Jeff of SOLO on a correct installation. I would like to hear from GXP owners who have such a system. What should I expect in terms of sound and performance? I already have the GMPP tune, and love it. Thanks in advance. Mran Yellow Roadster keeper.
I like solo. Good stuff.
Just remember, while the mach exhaust is the quietest they offer, it doesn't necessarily mean it is quiet.
As for sound, one man's loud is another's quiet so it is hard to say. But my experience with a HF solo cat and mach exhaust was that it was too loud for me under acceleration, and more so had a notable drone at 50 mph + in cooler weather and the colder it was the worse it was. As in difficult conversation in the cabin with the top up. It is definitely more than a little increase in volume.
I found the issue to be that it was easy for aftermarket exhaust to resonate in the cabin of the car with the top up. So while it wasn't too bad outside the car for the public, the inside resonance was a problem for me.
But again, other people aren't so caring or don't notice so much. I tend to not be into lots of noise.
If/when I do exhaust just a HF cat will be fine with me. Experience has shown the rest of the 2.0 cat back exhaust is not much of a restriction and it will work well even with big power adders.