Einhander.... i would appreciate that you could compress all your question into one instead of triple or quad posting... forum ettiques? hehehe...
If you are hard on cash, dun mod ICE first. It will cost a bomb. I'm perfectly fine with the stock sound system in the Neo, for now of course.
Tinting shop, have to ask KL ppl liao, but i know some place in JB can get real good price.
Sports rims, well... choose what you like, coz ultimately it is you who have the final say on the outlook of your car. Go wth your heart. But given the fact that our car ain't that powerful, getting lightweight rims might be good.
Meetings, hmm.. i met a Neo owner just now in a pub. He changed his rims to 17" with 205/40R17 yokohama R1 tyres... he also lowered his Neo using Gen2's sport spring. Didn't talk to him much, he is the owner of the pub. so busy entertaining other ppl. hehehe...
You glued your antaenna? Well, that is one way to safe keep your stuff from those itchy hands... i didn't do anything to the antaenna or the rear wiper...
Engine Revs, well.. i disciplined my foot to let go at 3k rpm b4 the first service... after that, it is up to you on how you can afford to pay for the petrol to rev it... After the first service, i revved quite abit... 5k rpm max... but currently i'm aiming to get the best FC out of my car for the moment... trying to shift around 2k rpm... hoping that the FC would change from 20cents per km to something better...
Magnet device or whateva stupid stuff dun help with your FC or performance or whatsoeva.... it only affects your weight of your wallet. Thus, forget about getting cheap stuff to increase your Neo's performance/FC...