ls integra

hey i have a 99 ls integra, besides intake, headers, exhaust, what else can i do to my enine to get some good hp? i wanna go all engine, no forced induction or bottle.....thanks

The best thing that I can think of to do to your engine keeping it N/A would be to go LSVTEC. Get a B16A head(or any other B series VTEC head), tap the block and head and run a stainless steel braided oil line, get a VTEC ECU, etc. Just do a search if you want more info. If you don't want to do that- then I'm sure that Crower probably makes cams for your B18B.

Polish exhaust manifold!! If you are willing to spend the money.

intake manifold, flywheel, throttle body, power pulleys, cam gears, cams, springs, chips, pistons, valves, lose some weight, short shifter, clutch, ... anything really.. i'm not a turbo/ sc/ spray fan either.. although i am not against it.. i would prefer to go all motor on mine too