Originally Posted by FocusBoy58
Ill chime in :D AEMs numbers are off. You can expect the same gains on a dyno from AEMs system and even more power when your actually forcing air to it at driving speed. Still waiting on a Tune so I can adjust AFRs and advance timing for Premium.. But I just changed platforms... I hope you guys arent mad for betraying the Focus but I was unimpressed to say the least with the ST I had on order.
What was wrong with the ST?