well i have a 05 lly and my first chip was a mp-8, and i really did like it alot (but i went to edge for the a2 controller),i didnt have any trouble out if what so ever! but if u would also get a exhaust system and a cold air intake, you will tell a bigger differance!
It's a great choiice as it allows you to tune in the EXACT amount of HP you want as their adjustment knob has an infinite control to it vs a pre set "click". Works exceptionally well too if you plan to stack modules later down the road, again because of the adjustability etc. Any questions on them let us know.
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