Ok i have a 93 accord ex 4 door with a jdm F22B dohc motor swap.. I wanna do a little homeade turbo set up and want to make around 200-250 whp.. I need some suggestions on what size turbo and some cheap engine management.. I'm on a $500 dollar budget

 

for $500 you can get

cheap turbo with lines- $50-$200
downpipe (make your own somehow - free-$100
pcv piping or some old turbo piping from any junkyard - free-$50
smic/fmic - $30-$100
fmu - $20-$100
bov - free-$50
missing link/check valve - $5-$80
misc - free-$100

junk yard turbo kits usually go for about $500-$900 depending what you can do yourself and what you can source for free/cheap.

good luck