they're way too expensive. like the guy was asking 180k for 1zz (taken from premio) and 130k for 1nz....ideally i wanted a 1nz but then that was too expensive.
rpm still falling to 500 sometimes 
one thing i noted today is that as long as wheels are in motion, neutral gear, idle rpm stays b/w 700-900rpms. but as soon as vehicle come to a halt that rpm falls to 500....whyyyyyyyy??? tps error?