2000sidohc

my buddy tells me what i need for my 2000 si is a HKS cat and dc header... then go from there what do u think.

z6hatchboy

Well what do you want? A hks cat seems pretty useless, it'll be too expensive and you can achieve the same thing with a actual high flow cat from ebay for $50. The dc headers not bad, but a airmass or comptech may be better and a intake. whats your budget?

mattyv

what else is done to your car? I'd do suspension first. if your motor's stock id just keep the stock exhaust. sounds nice and quiet

slo_hatch

if your car is stock...do the typica i/h/e setup. THEN you can go from there.

and it would help if we knew what your future goals were for the car...such as hp numbers and budget.

jdmjohnyyy

iTrader: (1)

nitrous, and plus if your motor is stock ? you'll be getting great gas milage