Sounds pretty good as well. Some bits of the install are easier than the 8L some bits harder, but the overall improvement is dramatic. http://www.dizzythedog.com/index.php?f=data_audi_a3_stealth_sub&a=1 Let me know if you need more details or a copy of the install guide. Big thanks to Cali who loaned me his beloved A3Q for 3 days to do all the work. The install doesn't take 3 days BTW, but I had to design, build and template the enclosure, and then figure out the wiring and amp location etc so it was quite a job. Install takes about 4-5 hours. Here's his feedback: http://www.vagoc.co.uk/vb/showthread.php?t=1881 "Andy, Thanks for the totally professional install - I had 4hrs of sweet driving back home and wasn't bothered about getting stuck in traffic, the sound just seems to get better and better. It appears to allow the other speakers to do the job intended. The sound quality is now far superior and what the A3 needs, clear mids and crisp high end with a punchy bass -I'm not and wasn't looking for a thumping bass more good quality sound (although Andy did prove it was capable of doing this once or twice with his test CD - which I pinched) so here is the shameless plug"