have Aspec Tune it or keep modding?
 

I'm kind of stumped right now with my rx7 project and I'm wondering if I should keep modding it or go ahead and have it tuned.

My Lt10s is set to stock.

Right now its an JDM s5 TII
Stock turbo, stock everything except
no emissions/blocked off
Corksport 80mmdownpipe to 3inch all the way back
stage 2 clutch
Adjustable Tokico HTS601R

So what are some good performance mods I should do before i tune it? Ones that I can gain to the most HP without upgrading the turbo.

My experience lvl with RX7s is about intermediate so any input would be great.

Thanks

FMIC and or water/alki injection.