experts

Hi Guys, New to the forum. Looking for insight into the following: 1. What is the part called? Is it worth getting? 2. Anything I can ask the LA dealer to do since it's been over 6 months? I have a 2009 Mazda 3 Hatchback (red color :) ). I took it in for an oil change and air filter change...

Im curious if anyone has ever connected a aftermarket sub and amp but left the stock bose amp connected for the components?????

Just got my speed did very little mods like a hybrid bypass valve and temp broke man's intake. Runs great but I think I need plugs and not sure of what brand of plugs to get. As far as motor goes I only have the bypass and intake. Anyone have any input on it greatly appreciated.

Anybody have good experience with plastic dip and willing to lend a hand? I would like to do my rear valence and would like a hand from someone that has some experience Thank you

I have a 2010 Mazda 3 s Sport Hatch with the BOSE/moonroof package. First I'd like to say I highly regret getting the BOSE package after running into all these problems with their damn amp and HU wiring. Here's what I want to do: 1. Keep the Factory radio 2. Install my 4 channel Amp to run...