We have just released a new kit for Volvo 700 an 900 series vehicles that is pretty slick. It has a really low introductory price that won't last long. It installs in about 15 minutes, and even accepts the stock alternator plug. (if 14.7v charging is desired) It comes in three series -
150 amp Dynamo XL = $249
200 amp ProPower = $299
250 amp Rhino series = $399
I was amazed at the difference, and because the customer was local, we were even able to dyno the stock unit and do a comparison graph of the improved outptut.
Here's a shot of the old Bosch unit. These same units are used on many European vehicles. It actually had decent output at really low rpm, but even our Dynamo XL outperformed it at every RPM.
Here's a shot of the MechMan unit bolted into place. The housing is custom machined so that it literally just falls into place, and bolts right up with the included adapter bracket.
A slightly shorter belt is required to keep belt tension where it needs to be. Anything beyond a 200 amp load has a tendency to slip a single v-belt, but luckily the Volvo has pretty good belt wrap. We were not able to slip the belt, even at 220+ amp loads.
Of course, we installed the 1/0 Power and ground cables necessary to carry the 250+ amps worth of current. Some zip ties made for safe routing of the cables away from any hot or moving engine parts, and we even heat shrinked the stock charge wire so that it would not short to ground.
The necessary adapter plug is included with all models, but is not used when the adjustable voltage feature is desired. This customer wanted roughly a 15 volt charging voltage, so with the simple turn of a screw, we set it to 15.15 volts. The power windows, headlights, wiper motors and everything else worked faster and brighter. The customer said it felt like a different car!
Here's the direct comparison between the stock unit and the Rhino unit. Pretty big difference... Both units were tested at 77 degrees F.