I have a 91 miata i picked up not knowing anything.

its has greddy turbo kit with intercooler
no engine man system


rx7 injectors
and evo fuel pump


i am having a few problems with it.

1. over heats some
2. burning fuel (130 miles to a tank)
3. tune. redlines at 5,500 ( not getting fuel????)


is there a program i can use to tune my own car?

 

There are tons of ecu's. No opensource tuning of any sort at least for now if that is what your question is.

Read up.