hmm....i'm also a Gen2 owner.
well,if u ask me wat i like about the car and dislike
I like,
the design of the car and the interior.

dislike,
the quality of the chasis,parts and the interior too plastic.

my Gen2 is the 1st batch(2004) one,
starting that time,i fix alot on this car,like
dics rotars(fix 2 times damn),power windows bracket,plug core,exhaust and some other minor parts...
the most headache place the is dics rotars,the quality really like shit. The surface easy to get unsmooth(hope u know wat i mean).
for the engine?so so for me,i try race before with my friend Satria 4G91 1.5 DOHC.pickup i lose,long run i win. if my car are manual,i got confident to win pick up and long run on him.oh yah,that time my car still stock and my friend change straight pipe already.
compare with Wira 1.5 ?i think Gen2 no problem with it.

if compare with VTEC or MIVEC ?? no need say anything,they can "bungkus" me anytime.

take my car for tuning ?for better performance ?
might as well just go for Mivec or GSR ?!!since u want performance...
if after tune,FC lower than before.I might will consider about it.