Can you have your ECU reflashed for a List of Mods, then Put on a few of the Parts a month later , Like a Down pipe, or fuel pump etc etc.. I want to do the Flash now, But the weather is not the Best for working on a Car..

 

Technically you can...
and depending on how aggressive the tune is you risk possible engine damage or your car running like crap.

 

Thanks for the help!! I was going to baby it. till I put everything on, maybe I will re-think what I was going to do.. Thanks for your time & help!!