For my 5.9 Magnum build I consider a rev limiter a must, especially with a 4 speed and the potential for blown shifts etc. I'm doing the engine on a budget and most of the rev limiter options I've looked at get rather spendy. Its nice to see there are some affordable alternatives.
No way do I believe there's a 40 hp gain. :wack: That kind of claim diminishes my respect for the owner of the product and whoever they are paying to advertise.