what is the best plug and play tuner and brand name out there that will give me more horses ? Im planning to change radiator yet. also will that tuner void my warranty ?
There are the more popular ones on this forum, just the messenger:
1) ZFG
2) PBD
3) LMS
4) 5Star
Will it void your warranty? It is possible, for a specific issue, that warranty repair coverage may be denied; depends on the issue, root cause, dealer, and Ford.
There is a Forum 'Performance Tuning' that has tons of real world experiences, perspectives, etc. Great resources on this site.