when i turn on my Quattro it runs through it's little music montage. Then instead of hearing a smooth threshold hum i get a signal usually between 11-13 like there is something under the coil. It only does this with the stock coil. When i use my 8" i get a smooth threshold. I have cleaned the battery posts with acetone and removed the coil cover and cleaned as well. The results are the same.... Any suggestions
HH Rick,
HH Rick,