I installed this on
Ford Focus

Review
I already had the predecessor (TS-WX11) in our other car and was pleased with the effect, so this was the obvious choice to go in our replacement second car, which also suffered from a distinct lack of bass. I looked at some other makes, but from reviews I found any savings in cost seemed outweighed by problems with reliability and service, so it was back to Pioneer. It does the job - provides a solid bass to your bum (assuming you put it under the driver's seat). I generally have it set around half volume as this gives a nice sound/feel without making you want to take ecstasy and jump around a lot. Installation of any device like this is not simple - you need to dismantle substantial parts of the car interior to install it and run wires, and make solid power connections into the car wiring for it to work properly - so if you are not something of a car DIY person you'll probably need help or a professional install.

What I like
These woofers delivers awesome bass at desirable levels, in whichever way you want it to play.

What I do not like
Installation deemed tricky!

Review
Finally after thinking over for a almost a year, I got down to getting this set.
Went to Foon Audio to get it installed. Took less than an hour + the tuning.
I'm running on stock speakers and etc on a VW car.
I can instantly feel the difference.. more bassy on the sounds and more omph.
It fits nicely under the passenger seat and not too loud/distracting.
Just perfect and fits my bill and the wife has no complains either!

What I like
Small
powerful
well hidden

What I do not like
I guess if it doesnt have the chrome areas around it would be nice.
worried of scratches