Well if anyones interested..
I came in 2nd for the Western Canada Regional dB Drag Finals in Street A, and am ranked 12th (Certified) Street A class for North American.
Done with a used Resonant Engineering MX-12 ($150), Clarion DPX11550 (850WRMS) monoblock ($400), Optima D34 bluetop ($260) and 3 runs of 1g cable ($70).. and without any access to an SPL meter for tuning !
Initially the system did a 138.8dB at an earlier comp.. 2 weeks of work realised a 5.1dB gain from the exact same gear. If anyones interested in what work was done to the car/equipment, here's a build thread: http://decibelcar.com/index.php/forum/1 ... eet-a.html
With some pictures.
And here's the sub box installed.. its 1.4 cubes with 2x 4" ports that are 18":