This is true. If you know how to solder, you can DIY for less than a dollar. However, you screw it up, and you just gambled 300 bucks on a new IDM."Worth it" is relative, mine was $0.25.
The improvents are noteable but not huge. It will start easier and have a crisper pedal feel.
Was that on the 99? Cuz its not much of a difference from 120v to 140v where as the OBS trucks are jumping from either 100 or 110 to 140.i spent the money to have mine done and beans shipped it back and cant say i can tell any difference? sure hope they did the mod and not just send it back stock:shrug: