what are the best things to do when it comes to tuning my rs?
i have a short ram air intake on it and a cat back also, what else would be good for it?

 

Not to sound like an ***, but you don't need to tune anything with only those items.
Look around in the 2G section bud. This has actually been asked at least twice this month already.

 

if by tune, youmean mod, then honestly your not getting much out of that RS. Without alot of money its still gonna be slow. Ill tell you what i tell everyone. Have your fun with it, keep the mod cost down and dont waste too much money on it, and save up for something better. Just my 0.02 cents

 

The 420a (your motor) isnt capable of too much... no matter what the mods. Like TE said, just keep the costs of modding it down, save your $... then pick up a 4g63t powered GST or GSX.