Anybody using Topspeed bypass pipes?

[Steve Tinker]

I've fitted both the headers and the cat bypass pipes, coupled to the standard rear muffler, to my 2001 S - very happy with the results, they fitted without problems and the quality (after 2000km) seems very good. Only glitch is that you can't fit the plastic undertray with the headers.
If you have any questions, speak to Che - he is very helpfull & has a professional approach.

[ProjectM96]

I got Top Speed test pipes with the Top Speed Pro 1 Exhaust. I had fitment issues with the U-pipes connecting the text pipes to muffler. I used a dremel and many washers and longer bolts to fix the problem. Sound is awesome.

[DFW02S]

Like Project, I've got the test pipes and race muffler.
I had no fitment issues on the 3.2 and the sound is fantastic.
When the top is down, I bet that I get 3 to 5 mpg less, because the sound is so great that I can't keep my foot off the floor.