well this my setup i want to run custom forged 12.1:1 c.r., bored a lil over havent decided on what yet , ok the question do u think these is still ok to run wiht 93 octance, i wanna know if i should try this or not even bother i really want to try and make a n/a thats going to stand out since no one seems to really try this. plenty of cars do it , hondas run as much as liek 12.5 on 93 why not our ka's

 

If no one has done it yet then why not try. I'm working on making my 2.5L V6 run at 12.2:1 CR. My next project is probably going to be a 240SX.
You'll need a fuel management system and a reprogrammed computer. You'd also be better off getting different cams or having them reground. I'm not sure what the options are for 240's but other than some tuning it will work.