Mikuni Super BN38 Tuning on a 1988 JS550: A Simple, Deep Setup Guide for USA Riders
Getting Mikuni Super BN38 tuning on a 1988 JS550 right transforms your vintage ski from sluggish to snappy. This carburetor swap fixes the common issues plaguing old stock carbs like poor throttle response and hard starting. The Super BN38’s larger venturi and adjustable circuits deliver cleaner fuel delivery across all RPM ranges. But success requires more than bolting it on. You’ll need correct jetting, proper pop-off pressure,…