What have you added to your car?

stainless oil filter

a drunk driver and a passed out drunk girl in her underwear.

All weather rubber mats, GPS software update. Absolutely hate to bling-bling my car with over-sized chrome wheels, body lowering, boom box, tinted windows, after market shark fin, fake HID, spoilers, and so on...

Don't laugh but I added a pretty nice sound system to my work van. If I got to drive a piece of shit at least I can enjoy my tunes.

^That is a really cool website, never heard of it before.

I'll bite... I've got an aftermarket exhaust on my V8 5 series... It actually sounds eerily close to my friends Aston Martin V8 Vantage (stock), and therefore wouldn't classify it was "tasteless".

Nothing. I leave them stock.

I replaced the run flat tires with conventional Michelins and added a spare tire kit. Otherwise, bone stock.

back in the 90s I bought a cr-v and slowly modified it to look jdm, even ordered honda-modulo stuff from japan, upsized the wheels, and all that. all in all that was the biggest waste of my money ever.

Never owned a car but I'll mention what I used to picture myself doing to a car when I bought it (and may still do if I move to a place where owning makes sense)

Obviously it would depend on the car but this is how it would be for something like a golf/gti

Few minor performance upgrades. New suspension (but not dropped...maybe only down an inch max), intake, chip, exhaust (not some fart can shit but something like a borla cat back that stays quiet with a tasteful note), and sway bars.

this would probably be something done over the life of the car...put in the sway bars and enjoy for a bit...then swap the intake and exhaust..etc. It would also depend on the car. Back when I was thinking about it more, these seemed to be the sweet spot on a VW...you could make it extra sporty and responsive without any outside signs. Costs to do this were pretty low over the life of the car but the intake/ecu/exhaust combo gave them a decent boost and you could really tighten up the handling with the sway bars and new suspension.

My solstice gxp I've done a few things for performance.
azeins tires and ssr wheels. Hands down the best upgrade for this car. Completely transformed it.
Then I wanted a bit more power and got a solo exhaust and high flow cat and trifecta tune. My guess this added about 100 more tq 80 more hp. so 360 tq and 340 hp
Still a car I can drive every day and have fun with.

My porsche is a stripped out street legal race car. Not much on it thats stock.

My accord? I changed the oil.

A Valentine 1.