In order to get the most aggressive sounding car possible, many people opt to install a very lumpy camshaft that has the added benefit of boosting horsepower. However, the days of single cam cars and pushrods seems to be drawing to a close; Ford abandoned them for overhead-camshaft technology almost two decades ago. Now with a total of four camshafts to swap out, the cost is too much for some people, who instead opt for a cheap “ghost cam” tune to give their 2011 Mustang GT an aggressive sound, sans any real performance gains.

However, Mustang Evolution reports that Ford may be asking the makers of these tunes to cease and desist, as they are attempting to patent the technology themselves.

The tune was discovered and created by Jon Lund, who was offering the tune through a number of aftermarket companies. However, these tunes started disappearing from the websites where they were being sold, and a post over at SVTPerformance by Lund confirmed that he stopped making the tunes at Ford’s request.

Chris Rose from AmericanMuscle.com also chimed in, saying they were having some drivability difficulties with the ghost cam tune, which is why they never released it. It would appear that Ford wants to patent the technology, which it uses via the Boss 302 TracKey to create a more aggressive sound, and could also be applying the same technology to upcoming Mustang GT’s. So out of respect for these Ford engineers, it appears the current crop of ghost cams are going to be, well, ghosts. But now we’re excited because Ford could also offer the technology through the rest of the Mustang lineup, and we’re pretty sure they’ll figure out the drivability issues; it’s their car, after all.