There are a few hundred threads on this (ok, exaggerated a tad ), but in summary:
- you might restore some lost ponies
- don't expect fireworks
- whether you actually see any gains or not, the dyno graph will show you around 20bhp gain, otherwise you wouldn't pay...
I expect a few members will now swear blind that their remap took them to warp 9, but hey. Placebo is great.
If it was forced induction engine, things would be different