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Hello! Rebuilding a very modified Sea Doo HX

I bought a 1996 HX with many modifications a couple months ago. It ran great for several weeks but finally seized up, I was running 91 non-ethanol premixed with Amsoil 2 stroke synthetic at 40:1 (should have been 30:1 I’ve since been lead to believe)

Pulled the engine got it turning freely, rebuilding the 44 mm carbs and am checking to see if they are set up for the Factory Pipe (can’t imagine they’re not).

I and am now trying to figure out the rev limiter/solenoid control that has been hard wired into the computer.

I’m not expecting 100% reliability, but I’d definitely like to cool the engine down. I don’t mind losing 5 MPH off the top end, and I’m happy if it takes a bit longer from idle to get there.

To do so, I thought I’d lower the RPM limit to the mid 6000’s and if possible get more water flowing in the Factory Pipe to cool down the ski. Ultimately I’d like to retard the timing to get it cooler but I have no actual idea what’s been done to the internals of the engine so all I’m doing before a full engine rebuild is to try to tune the carbs and exhaust system.

But check out the revlimiter/solenoid control for the Factory Ski! Can’t find anything like it out there. Could it be a one off device programmed by someone with advanced skills? The guy who sold it to me said it came that way and he had no idea how to program it or what the symbols on the readout are.

Should I leave it as is? Should I take it out and start with a new rev limiter and solinoid control. Or take it out entirely and have water constantly flowing into the factory pipe?

The big question is: “Has anyone seen an Intellitronix circuit board like this with the 2 buttons and 4 digit readout with 4 wires used in this application?

Thanks IMG_0873.jpegIMG_0874.jpegIMG_0887.jpegIMG_0888.jpegIMG_0889.jpegIMG_0892.png
 
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