RE: Saito 180 with perry pump
If this is a new engine I would run it with the factory muffler and stock carb setup. If it runs well and breaks in after 30-40 min you should be able to get full RPM without problems. I would then add the pump and see if it works. If all is OK then hook up the Keleo exhaust and see if all is still working well. This way you will find out which part of your set up is causing problem. Doc