engine performance

ive got a 99 k11 micra, just wanting to know how what can I do to squeeze abit more power out of it without turboing it. I don't mind spending money just not hundreds. Any suggestions would be great. Thank you :)
if you can weld, you can make a whole turbo kit for like 300. but that excludes any ecu modification.
turboing a micra can be expensive, gizfab.com do a turbo kit but theirs in expensive
Better exhaust manifold, better intake manifold, GA16DE airbox, set timing to 17 degrees, if you have a 1.0 fit the 1.3 cams. (Or the whole engine). If you have a 1.3 fit the 1.0 flywheel. ITB's.