My 09 Nightrain is still completely stock and I am slowly saving pennies to upgrade bits as I can afford them, my question is ....

Do dealer stock ECM flashes give much extra performance?   how much do they cost? should I bother getting it done?

I do plan on several performance upgrades in the following order and would appreciate any advice.

1. Exhaust -  Rinehart Crossback 2 into 2

2. ECM - still researching which to get but am leaning toward the TTS

3. Aircleaner - Hypercharger, may also do the throttlebody

4. Cams - still weighing up Geardrive/woods/SE/andrews

5. Big bore kit - still weighing up 103/110 (probably do heads aswell)