Over the past several years I frequently hear the comment from potential boat buyers, “My family and I want a boat mostly to wakesurf behind, but we are not professionals so we don’t need a pro surf wave.” Well, I can say, from personal experience teaching hundreds of people to surf, that this idea is a misconception. I do agree that for a beginner to intermediate level wakeboarder’s perspective (90+ Percent of people), a professional level wakeboard wake is too big, very intimidating and limits progression. However, for a beginner to intermediate level wakesurfer’s perspective, a “professional-level” surf wave leads to much easier and overall much better experience. With the right wave progression is much faster, and easier. In fact if you weigh over 190 lbs. learning to really surf (throw in the rope and ride) is just about impossible without a good quality surf wave .
Ever since PCM came out with the new direct injection H5 and H6 engines, we have been asked what the difference is between direct and sequential injection and if PCM is the only company using direct injection. I hope to answer both questions below. Here is some basic information about injection systems.
Basically, a SFI (sequential fuel injection) system has a fuel injector for each cylinder. Each of these injectors puts fuel into the system at 30-40 PSI before the intake valve. This air/fuel mixture is pulled into the cylinder past the intake valve on the intake stroke of the piston and is then compressed and ignited. This system was way more fuel efficient and created way more power than the carburation systems it replaced. Sequential fuel injection has been used in marine engines for several years and is the system that is currently used in most new towboats [...]