i have an rx.
anyway, i would suggest taking off the intake muffler first of all. it sounds great without that thing on there. i turned the muffler into a lunch box since its so big. i never realized modding old cars like this costed so much money (i'm only 16, $100 is a lot). i think the tuning has a lot to do with the driver. i personally cant stand understeer, so the suspension is going first, then the engine later. good luck with the tuning.