2015 AR240 Max RPM

[Jonathan Pisarczyk]

Hello Everyone,

I've got a 2015 AR240. I'm running on Lake Huron (Great Lakes) at 500ft Sea Level. I can't seem to get my engines to hit 7500 RPM's. I'm getting 7200 on the Port and about 7300 on the Starboard. I'm running 91 Octane currently because I had issues in the past with Ethanol being in the 87 Octane on my AR210. I'm wondering if the timing on the ECU isn't liking the 91 Octane.? Anyone else have experience with the 2015 getting higher RPM's?

 

[Just1more]

I also am barely hitting 7300. Top speed is 45. We run the Illinois river.

 

[Jonathan Pisarczyk]

I'm wondering if 7300 is the new max on the 2015? My top speed is about 48mph with half a tank of gas and two people. What Octane are you running?

 

[Jonathan Pisarczyk]

Also I've got the SAT1800a-PP which I believe is the 3star model. I also adjusted the throttle cables like the video below. I also tried using the cruise mode to max higher RPM's with no luck either.
https://www.youtube.com/embed/-Krh6SbgzHU

 

[greg]

I can get 7640 on port and 7490 on starboard with mine and get around 51 with 4 adults and Bimini up and 2 wakeboards hanging off the racks

 

[Jonathan Pisarczyk]

I can get 7640 on port and 7490 on starboard with mine and get around 51 with 4 adults and Bimini up and 2 wakeboards hanging off the racks

Hey Greg, What Octane gas are you running?

 

[greg]

I have only used 87 octane so far with STA bil 360 added each full fill up.

 

[subysti]

There is another identical thread on this problem. You only need 87 octane and should be seeing at least 51mph.

 

[Jonathan Pisarczyk]

I have only used 87 octane so far with STA bil 360 added each full fill up.

Thanks for the info.

 

[Jonathan Pisarczyk]

There is another identical thread on this problem. You only need 87 octane and should be seeing at least 51mph.

Thanks. I'm going to try the intake spacer from RIVA and new air filters.

 

[greg]

Unless you are high altitude I wouldn't waste money on all that. Most people say really didn't help much at all.

 

[Jonathan Pisarczyk]

Fair enough. However it doesn't quite make sense why I can't get to 7500 RPM and only 48 MPH...

 

[greg]

I would swap plugs

 

[Julian]

I'd change the plugs first. Then if that doesn't help, remove the air filters and run without them. If that improves your performance, then consider buying aftermarket intakes. Boats didn't used to have air filters, and some choose to run without them...not much dust in the air on the water where I boat.

 

[Jonathan Pisarczyk]

I would swap plugs

Hello Greg, are you running stock plugs?

 

[RiverRat]

I believe some members had the same performance and found out they have the California approved versions that make less power.

 

[greg]

Yes I am all stock . i have new plugs that im going to put in at 50 hours. .

 

[Jonathan Pisarczyk]

I believe some members had the same performance and found out they have the California approved versions that make less power.

I've got the SAT1800a-PP which I believe is the 3star model (non California model)

 

[greg]

Try new plugs and see what happens. Check oil level. If too high can lower the RPMs alittle.

 

[Jonathan Pisarczyk]

Try new plugs and see what happens. Check oil level. If too high can lower the RPMs alittle.

Will try that this weekend. Thanks for the advice.