i bought a 10thae with a really old model hks f-con, its the one with ten preset maps. i dont have a wideband 02 sensor so i dont know where to set it at. is it better to dyno tune that or buy an apexi s-afc2 and get it tuned with that?

thanks eric

 

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kk just to make sure, will the gcc work with bigger injectors than stock, ex. four 720cc injs. can i tune that with the gcc?