Has anybody used a spark translator, I was searching on ebay for a timing controller and came across this, I just need to take out a few degrees of timing. Didn't know if anybody had seen these or used them weather it would be worth my while to buy it. Thanks

http://cgi.ebay.com/ebaymotors/IGNIT...Q5fAccessories

 

Maybe someone will chime in that knows this one but I've never seen that before. It sounds like it only advances the spark???