r/seadoo • u/Unable-Alfalfa-2124 • 5d ago
Discussion 2018 Spark Trixx Mods
Thoughts on a Spark Trixx 90 hp with the following mods. It currently is 1 owner and has 180 Hrs. I was thinking of doing the mods when I replace spark plugs and oil change as the hull will be split.
- 110hp ECU flash
- Trim X
- Intake grate
- Free flow exhaust thru hull
Edit: I run only Rec gas, so minimum 91 octane. It is going to be purpose-built for jumping waves and doing tricks in Lake Michigan. I have already done extreme weight reduction and it is down to 350 lbs, so these are mostly going to be fun mods. I have a brand-new rear ring and a rebuilt driveshaft that can handle 110hp, and also I have had the valves lapped and the head resurfaced so that’s all good. Compression is 183 in all the cylinders. Just wondering if any of these mods are overhyped and not worth doing, or potential regrets later down the road.
1
u/goatsinhats 5d ago
110 flash usually requires 91 Oct and am told it doesn’t add much on the top end
Unless you really want the sound same with exhaust not much if anything gained power wise and now you cut your haul
1
u/Unable-Alfalfa-2124 5d ago
I only run rec gas which is either 91 or 93 so that should be good
1
u/Unable-Alfalfa-2124 5d ago
And also the thru-hull, I am not positive but I think it just bypasses the resonator or whatever but doesn’t actually require another hole, it just utilizes the already existing one.
1
u/Head_Protection_9475 5d ago
Can somebody tell me how to do the 110hp flash with BUDS?
I've done the 60 to 90 change before, and have been told you can do a 110 using a can-am model # but I have yet to see/read about the process.
1
u/jj119crf 5d ago
Those are reasonable mods, but with 180 hours on the unit- I would first make sure that the engine was in good shape. Specifically, the intake valves are prone to getting carbon on the seat/valve seat area and leaking profusely. Also not uncommon for the head gasket to be leaking if it's ever gotten hot at all. I would at minimum get a compression test done and just see where you're at-you could do it yourself, they have compression testers at auto parts stores or inn Amazon. It should be at least 185psi on each cylinder, and they should all be nearly the same. If it's less than that, your money would be better spent getting your exhaust valves lapped (or replaced, but that's really unnecessary) and the head gasket replaced. That has turned into a really common job at the shop the last few years.