Wake Pro, High Altitude

[changa76]

Hi every body,,

I own a 2015 wake pro (215),

It works prettey good, but when try to get max speed, It hardly gets 60 mph and rpm like 6,800-6,900.

I ride at almost 1 mile high (6,000 ft osl).

What can I do to get more speed and rpm.

thank you all.

 

[red2blue]

Hi every body,,

I own a 2015 wake pro (215),

It works prettey good, but when try to get max speed, It hardly gets 60 mph and rpm like 6,800-6,900.

I ride at almost 1 mile high (6,000 ft osl).

What can I do to get more speed and rpm.

thank you all.

Improve the air intake, remove OEM intercooler and install an external intercooler, tweek your prop...last resort(cost wise) will be to up your sc.

 

[Coastiejoe]

The altitude is a major contributor to lack of performance. I can't believe something has not been designed to help compensate. Even the old Fords had a Barometric Pressure Sensor that provided data to the ECM.

 

[ski-d00]

The 4tec has plenty of sensors that makes it run perfectly even at high altitudes. The problem is the air is too thin and it will never generate the same hp at that altitude. The key is to get it into it's power band which will require impeller pitch change to get your rpm up to 8k. However, you still will not see anything close to the same performance at sea level. You've basically taken a 215hp engine and choked it down to about 170. I would guess you can see low to mid 60's but that's it. You can add all kinds of performance mods which would help but your cheapest and best mod will be to head down the mountain to a lower altitude.

 

[Coastiejoe]

I agree with the above,, thin air is an issue. I wonder if an improved SC/Booster would make a difference as it would increase the volume of air compared to the stock set up. If you can increase the volume to a near stock volume, you would NOT need to increase other factors such as injectors.

 

[changa76]

I think I will improve air intake, and change the prop to the solas concord 13/18, (solas recommended)
and that should help.
I guess wake pro has more pitch on the original impeller.
Let's see how it works

 

[AircraftDoc]

60 mph for a Wake pro 3 seater is good. Only slight loss with altitude thin air.
Your wake Pro is just fine.

If you are looking for speed for racing, get an RXP and trick it out.

 

[ski-d00]

His wake pro 3 seater is a 215 HP sc/ic machine, they made 155 versions which is what I think you are referring to. It is the exact same setup as RXP/RXT which will nearly hit 69 out of the box(at or near sea level).

Thin air sucks, I've ridden snowmobiles up in the mountains and it feel like you're dragging an anchor and it just won't rev up.

So, I did a quick search. At 6000 ft, you should expect an 18-22% hp loss versus sea level. You are losing close to 50 hp which is crazy.

 

[AircraftDoc]

The RXT is heavier and longer. True calibrated speed by GPS (not the speedometer in the ski) will be up to 60 to 65 for the RXT.
The shorter and lighter RXP is 65 to 70 in perfect conditions. I have both skis.

The RXT will not be as fast as the RXP as to the many differences they have.

The performance loss is due to high density altitude.

 

[Nike12000]

Sounds like you need to start riding closer to sea level