Hi I have a rocker c fitted with a forcewinder air filter had a lot of trouble with rain thinking of fitting pro r hypercharger on does anyone no if this would be better

 

The secret to making this accessory work well is to spray the rain sock with aerosol water-proofing. I figured this out a few years ago on a 4,500 mile trip that got me stuck in a rather large rotating weather cell that kept dumping massive amounts of rain in the middle of summer. There was a years worth of average rainfall in a 3 day period.

The carburetor flooded out in the driving rain on the interstate. bowls were probably half filled with water rather than fuel, It'd run but just marginally. I could keep it going by surging the fuel.

After an overnight dry out at a conveniently located Executive Inn and parking under the canopy for the night, I took a cab the following morning to Walmart,...bought some plastic emergency pochos for me and a can of waterproofing for the rain/wind-sock. No problems keeping it running after I ran-out the water from the carb float bowls.

The positive effect was the water effectively de-carboned the cylinders and pistons. The bike never ran better.

That's my $.02 worth. I still averaged 51 MPG @ 75 MPH for the duration of the trip on an 883 Sportster Custom.