I havnt done much in the performance end of things just the de-cat, but what a mod! befor when it hit the second electronic lift 7000 RPM it was a bit noisyr but now its pretty serious..
Light weight wheels make al the differance aswell. (620g) 
I put in an MTX 9500 10" sub with the 1501D, 1500watt Amp,
its mental sound! Iv heard of the same set up popen a windows in a smaller car but it weighs 7stone so it kills the speed. The only good thing is i can take the whole set up out in 5min flat, an put it back in in roughly the same time.
