07-29-2009, 09:24 PM #1
Offering ECU upgrades -- MSX150 & MSX110
I have completed the development of 2 ECU upgrades for the MSX150 and MSX110. I have now logged over 25 hours of run time with the current upgrades and I'm very pleased with the results.
The calibration upgrades relate to the fuel maps, the boost maps and the timing maps. Everything has been calibrated and tested using proper instrumentation such as Bosch Uego LSU4 wideband O2 controller, boost gauge, fuel pressure gauge and data logging directly from DW (yes... I went on the water with my portable computer...).
The MSX150 ECU upgrade requires no other modification. It will increase top rpm from the typical 7,350rpm to 7,800rpm using the oem impeller. The fuel map is calibrated as follows:
- 4000rpm: 14.2 AFR
- 5000rpm: 13.8 AFR
- 6000rpm: 13.2 AFR
- 6500rpm: 12.5 AFR
- 7000rpm: 11.8 AFR
- WOT: 10.6 AFR
- Please note the cruising rpm fuel calibration has been leaned for greater economy and engine life. Unburnt raw fuel leads to premature engine oil contamination which leads to premature piston ring, cylinder walls and crank bearing wear.
The MSX110 ECU upgrade has been designed with the intent to run on the original intercooler and oem prop. It features the same fuel map as above. This ECU upgrade will increase top rpm from the typical 7,000rpm to 7,500rpm.
I have done the Polaris/Weber PWC ECU's as a hobby. The whole process was facilitated by the fact the hard work was done 1 year ago when I developped the Polaris/Weber Bosch ECU reflash for the snowmobile application. I have done over 75 snow reflash up to this point......
Anyway... I thought I'd let you know in case that would be of interest to some of you.....
07-29-2009, 09:31 PM #2
07-29-2009, 10:53 PM #3
- Join Date
- Jul 2007
- near Toronto, Canada
This is very cool news
Thank you for taking the time to put this together, and make it available!
How would the upgrades actually happen?
Does the ECU need to be sent somewhere?
Any issues with 'dealer servicing' after the ECU has been flashed?
Any related or recommended engine/impeller/jet pump upgrades or modifications to improve performance, or reliability?
07-30-2009, 07:24 AM #4
07-30-2009, 11:06 PM #5
This is very interesting and I could beleive a lot of work. How do you feel the add rpm and boost will effect an already over taxed engine? thanks i will save your info
07-31-2009, 10:10 AM #6
In fact, it is always better to run boost at higher rpm than lower. I am always more concerned when high boost hit at low rpm.... this opens the door to detonation. Simply put, all things being equal, running 15psi boost at 7,800rpm is safer than running 15psi boost at 7,000rpm.
The engine itself is very sturdy. However, it has often been considered the 2004 engine block were fragile and plagued with cylinder wall nicasyl flaking. It is not clear to me if this is true or not. There is one thing I know for certain: the original MSX ECU fuel calibration is too rich. That being the case, oil degrades very quickly from gas contamination and this is bad for piston rings and cylinder wall. Oil maintenance is key for these engines, snow or PWC.
08-01-2009, 12:19 AM #7
Extremely niiiice, I think Kevin will be in touch shortly.
11-13-2009, 04:20 PM #8
Desperado ECU upgrades
Can you upgrade the MSX 140 ECU?
If so what is your email address?
11-13-2009, 05:42 PM #9
11-13-2009, 11:51 PM #10
Contact me about an MSX150 ECU upgrade.
I'm thinking about the ECU upgrade, just not 100% sure
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