Categories Drifting 240z with a Rb20det from a legacy skyline.. circa 1987… first rb motor ever.#enthalpy #tune #rb25det #rb20det #s30 #240z #240sx Post author By Jason Post date December 17, 2014 ← S15 on dyno.. stock with external wg and a tune. → 858 rwhp SR20 VVL on Enthalpy rom tune. 6268 32 psi, 3.75" z32 maf, small shot#s14 #s13 #enthalpy #240sx #enjukuracing #tune #romtune #dyno #4digitssoon