I’ve got a 2006 Sunsport 24V. Essentially the same boat and it was the first year of the DBW, Drive by Wire. I’m still using paddle wheel on mine but the GPS uses the same logic to control the engine. Mine started doing funny things. In that year PP was patched into the engine computer main harness unlike the 2007 and later in which they had a real harness. On mine I found where they patched into the 16 pin harness that runs behind the engine computer. I found light corrosion on a few of the pins. I cleaned them up and it works like a champ now. I believe the PP modules are very sensitive units.