hmm.. if u r gonna boost dat low, dont think u will be needing forges and titaniums. furthermore, the std boost is 0.6barr and not in psi. dats equivalent to about 8 or 9 psi(?). sumbody correct me here k. my mech was using his 4efte for about 10 years before he rebuilt it wit 5e forgies internals, he got sum bonus from the engine he bought. no point letting forgies laying around, so he shoved dem in :) before dat, all was std, including the turbine. no timer, redlining in midday and just switched off the engine, ie not properly taken after. the keyword is properly, meaning its not taken care best. cudve been better, so if take care of the engine better den my mech it shud last longer den dat i supposed.
80km is just a sinch in a modded starlet, so dont worry. i get more den a 100km if driven sensibly, and a lil more den a 100km if boosting around. i once smacked a b18 and the fuel gauge doesnt even moved, max speed was more then the speedo can tell at a mere 0.69bar. i know u'll love the engine as i am bro, just take ur time to search for the rite cut k. cheers!!