This is the difference in the 2018 AXYS 800 ECU

[JoeyStrub-Bikeman]

We are over the ECU Speculation. It's time to tell you the differences between the 17 AXYS 800 and the 18 AXYS 800. I am going to keep this short and sweet so if you have any questions feel free to ask.

1. The Timing Offset is different under high Load / high RPM. Timing offset is when PTO has a different advance than MAG.
2. The Corrective Idle Timing is different when engine is extremely hot.
3. Pipe Temp sensor calibration values have changed to accommodate new pipe temp sensor brand.
4. ECU flashing code has changed from prior years. 18 File must be flashed into an 18 model year and will not accept 15-17 files and 15-17's will not accept an 18 file.

The rest of the ECU function is pretty similar. There will be no issue running a 2018 AXYS 800 head on a 15-17 all of the Water temp correction factors are the exact same.

We make the best AXYS kits available because we have the most technology available!

 

[Brock]

Thanks Joey

Timing offset was noticed at dtr. Hmm.
Only 1/2 to one degree though on digital wrench.I’m curious now?

 

[coryatver]

nice! no need to triple post on this forum, its not a large one that you could miss a post.
What does timing offset do? why would you want timing different between the 2 cylinders? That is interesting about the water temp correction factors being the same. Will the motor run at full power, best timing with the cooler thermostat temp?

 

[JoeyStrub-Bikeman]

nice! no need to triple post on this forum, its not a large one that you could miss a post.
What does timing offset do? why would you want timing different between the 2 cylinders? That is interesting about the water temp correction factors being the same. Will the motor run at full power, best timing with the cooler thermostat temp?

Timing offset is done for several reasons-
1. Since most of the power goes out the Clutch side (PTO) the crankshaft will have a slight torsion wind to it. This torsion wind make the PTO piston timing different than what the Flywheel timing would indicate.
2. Sometimes pipe design and curvature will send pressure waves more to one cylinder or the other at certain frequencies. This changes Volumetric Efficiency from one cylinder to the other. Changes in VE make changes for fuel and timing necessary. We program Timing Advance and Fuel Duration offset in our Bikeman various stage Bolt on Performance Kits (BOPK) to match pipe and performance package needs.
2. Sometimes manufacturers make one cylinder less at risk than the other so failures cost less, this was a more likely scenario before emissions standards of today.

Let me know if you have any more questions.