i have heard both good and bad things about this modification, i was wondering if anyone had done this and what they thought about it. thanks

 

my bud did his auto...uhmm...kept his lights from dimming as much for a while untill the life of his alternator got low enough to make up for it :P i think he said he saw a little better gas mileage...but othern that not much

 

I made mine out of left over power wire from my system, and it gave me 3 MPG increase..maybe a little gain in power throughout the powerband.