RE: sh .18 vs. vx .18.....
running redcat Lighting STR vx.16 port/polish on sleeve, with HPI header port matched to the block/case, XTM tuned pipe (XTM-cellerator SH.18), HPI IS F Lexus body (Lexus Blue) Byron Pro-driver3000 30% fuel, engine has been sealed with (permatex red) High-temp RTV., my temps are 170-185!, perfect tune, instant throttle!, Sealing the engine makes a BIG differance for tuning! this car runs pretty fast forbeing theVX16, Looking to upgrade to the SH.18, or OS 18cv-R.