Help:2013 pro rmk with aerocharger

[Yamaha421]

Just bought a pro rmk with aerocharger turbo on it. Dealer didn’t know anything about it so here I am. What numbers should I be running for a/f gauge? I believe it’s either 50/50 mix or straight av, at 1800-2000 feet elevation. At idle My numbers are 16.5-17. Any additional info on this set up would be great

 

[Pistonbroke]

Just bought a pro rmk with aerocharger turbo on it. Dealer didn’t know anything about it so here I am. What numbers should I be running for a/f gauge? I believe it’s either 50/50 mix or straight av, at 1800-2000 feet elevation. At idle My numbers are 16.5-17. Any additional info on this set up would be great

If you're in the 6-7 psi range, run 50/50 Shell 91 / 100LL Av gas. In my experience running straight av makes the sled run sloppy and lazy on the low end.

Idle numbers are always insanely lean, just get used to it. You want to see an A:F of 11.8-12.0 ish or so when under any significant throttle.

Is it an HM setup by chance?

 

[Yamaha421]

No I believe it’s the aero charger kit from aerocharger not hm. I’ll check those numbers out later. Just threw the det. Code but it’s also been sitting for a year with probably old ****ty fuel. Thinking I should be good to drain fuel and start fresh. It’s running 8 pounds of boost, was hoping to get a controller on that and turn it down to 5-7. You think 50/50 mix is okay? Everyone tellin me run av but im not sure. Thank you for fast reply.

 

[Pistonbroke]

Here's some reading for you on using the turbo and controlling boost on the aerocharger.

https://docs.wixstatic.com/ugd/6a10bb_9515eebee1174bf3b152a2703231acfb.pdf

https://docs.wixstatic.com/ugd/6a10bb_339651d1786249f2a1cf055d18a3e546.pdf

Definitely start with fresh fuel! You can do no harm with 100% av, then adjust the mix if you find it's sloppy or sluggish. Worst case is it will throw a det code, the polaris really protects itself before damage occurs.

Good luck!
PB