changed the air filter and cleaned the MAF sensor with MAF cleaner. Definitely feel smoother throttle/acceleration, but could be the manly man adrenaline pumping through my (pale, office worker) body.
Baby steps, but next up is to change the serpentine belt and all the belts on my e30 318iS (which will be up for sale soon).
Really feels good to get my hands dirty and do something in Real Life TM in comparison to all the "virtual" accomplishments under my belt as an IT professional.
Probably being a drama queen, but man, feels good.