As some of you may know, I recently bought a 2014 Mazda 2. There was no chance of me keeping it stock, and I put a stiffening bar on the rear torsion beam before the engine was completely broken in. It drastically reduced the body roll and understeer which it desperately needed. After doing this, and seeing the effect, I have officially been bitten by the mod bug. The question is, what do I do next? Unfortunately money is a concern (stupid education), so performance per dollar is important.

Eventually, I would like to do a couple appearance things (Rally lights on all the things!), but for now it will be all performance. Fortunately, there are a lot of relatively cheap mods, but they do all add up, so I have to do one at a time. The car also is a daily driver, but comfort isn't really that important to me. So Oppo, what would you do next?