Im new to ricers/tuners/imports or whatever the hell you want to call them, but to achieve 500+ HP in an Inline 4 Cyl. engine you would have to do many things:
- Rip the stock (D16A6 DOHC is it in a 89 CRX?) and shovel in a B18 1.8 or D16A8 (but thats more work)
- Install racing headers, rocker valves, camshafts, crankshafts, pulleys, timing, electrical, ECU, transmission, axels, driveshaft, wheels, thats all I care to mention at the moment
- Post and polish the engine so its mint condition
- Bore all the cylinders and replace the pistons with larger racings ones
- Brand new exhaust system from headers to muffler
- Turbo stage 3 or higher
- Completely new intake setup for cold air
And I'm probably missing quite a bit, but I bet you that setup would get you just about 350-400 horses. Now if you want to take the pussies way and throw your baby bottle of nitrous in there, you might get about 450 HP. For that matter, I did not see any of that list in your car unreal. All I saw was a POS cold air intake which will run you $30 and enough garbage body shit to choke a camel.