i have a friend who is selling his SAFC for $100 and it was only used 3 months. well i have a gsr w/ I/H/E and some other stuff in my sig and was hoping that it would help out a little. well my plan is to save up and go turbo in the early summer so would i need this down the road or is it a waste of money? and i have a shop near me that can dyno it to get the best results.