I picked up a used qsc and second gen stm. They were for a 1000 outlander. I have a 2013 max 650 with 28" Executioners, muzzy slip on, tuner by vfj. I had the secondary on and everything worked great, rpms would be in the 7600 range and climb until it topped out. I out on the primary today and now I can’t get it dialled in.

The secondary has a yellow spring and a 50/38 helix. The primary has a silver spring. It initially had the following weights: T-1/2ss, C-1/4ss, B-3/8ss and cross 1/4sh. From a stop with wot my rpms were around 6000 and climbing, take off was around 2000. I changed the weights a couple of times, my most recent effort is: T-0, C-0, B-1/4ss and cross 3/8ss. With this setup from a stop to wot rpms are 6950 then a drop to 6400 and climbs with speed, takeoff is about 2150.

I’m no tuning expert and can’t find much help with 650 settings online as most have an 800 or 1000. Any thoughts? Really need some advice. Not much weight left to pull out now.

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