Tuning
 

Do i need a re flash only with test pipe and kn filters thank.

You dont NEED it, you will see abit more gains with a tune thought, but i highly recommend waiting until you get all your intakes/exhaust mods finished...ie. header, downpipes, exhaust, intakes. Then tune it.

you will see some gains even with the mods you have but when you do other mods you will need to get a new map for them.