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It Begins - Evolution Powersports Stage Tuning The RZR XP TURBO!

288K views 1K replies 191 participants last post by  Razorpilot 
#1 · (Edited)
It Begins - Evolution Powersports Stage Tuning The 2016 RZR XP TURBO!

Evolution Powersports in conjunction with Andy from Hard Core tuning has begun stage tuning the new Polaris RZR Turbo. We have very good baseline dyno runs of 103 Hp to the wheels on our Mustang Dyno. Stock boost pressure is about 12 lbs when taken on the engine side of the throttle. Right now we are modifying the boost, fuel, timing and throttle tables to see what this engine/turbo combination is capable of with 100% stock intake and exhaust. Tomorrow we are stage tuning with our "Magnum" series exhaust and intake. Stay Tuned....videos are coming.





 
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#3 ·
We are up to 17lbs of boost and hitting the rev limit hard with the stock clutching. The next file will have a 9000 rpm rev limit and a little more fuel as our AFR's were in the mid 12's which are a little lean for our liking. FYI, 100% stock fueling is very good from Polaris. It runs 11:8 to 12 at WOT.
 
#8 ·
A few more notes about the stock tuning. The boost spikes to 13.5 lbs and then stabilizes to 12. This is typical of a boost curve with electronic boost control. However, as the load and rpms increase, the factory programming allows the boost to fall off. We noticed this both on the dyno and at the dunes where the power would plateau. Our tunes will hold full boost throughout the rev range.
 
#11 ·
What kind of numbers at 17 lbs of boost? What was the torque stock? Can't wait for a video
 
#17 ·
Re: It Begins - Evolution Powersports Stage Tuning The 2016 RZR XP TURBO!

Torque numbers...
 
#18 ·
Re: It Begins - Evolution Powersports Stage Tuning The 2016 RZR XP TURBO!

Torque numbers...
Numbers will be published when our testing is complete, but lets just say for now that this machine is a BEAST EVO Tuned... We are done for the day and will be back at it tomorrow. We also saw some good gains with our exhaust. More later.
 
#23 ·
I'm very curious as to how the crank is going to hold up as you push the boost levels...

I haven't seen the 1k crank on the prostar but as this engine was designed around the turbo I'm curious if it's stronger?

Can you please elaborate on the fuel/octane rating. What octane are you are running at stock? Are you running the same octane @ 17+lbs boost?

Is there a noticeable difference and/or performance difference/change/control with the knock sensor?

I'd like to hear your opinion on the engines design. Is it something you welcome? Do you find it easy to tune, or is it a PITA.

Lots of questions & moreover come, but I'd really like to know. Thanks for your time.
 
#24 · (Edited)
One of our shops is very close to Osceola WI where the engines are made. I have a few friends who were involved in the durability testing - it sounds as if the engine is very strong and was tested gruelingly at higher boost and/or power levels. Stock we run 91 Octane. The stock boost level is approximately 12 lbs, but falls off a bit during a run. For testing purposes, we use a 95 Octane mix, but as the consumer tunes are further developed, we look at the data logs to see the knock sensor feedback. Then we run the tunes on 91 Octane to compare. After this we field test data log to make sure they are safe on the rated octane. That is why we will not publish numbers until the testing is done.

Tuning this vehicle is fairly straightforward, but there are lots and lots of new tables and safety features. It is going to be difficult for those who are used to timing/fuel/rev limit maps to figure out. Fortunately for us, we have a lot of experience with Bosch ECU's from our automotive business.

All of our ECUs programs will be read locked to prevent someone from attempting to pirate our work. This does not mean the ECU cannot be written over, just that it cannot be read out. Plus there will be lots of single bit value changes, so if someone does get by our security, they will have no idea which values have do do with actual running parameters. The values will be so obscure that we will know 100% that our program has been copied. From past experience, we know this will be attempted.
 
#33 ·
The consumer, stock injector stages 1, 2 and 3 programs are complete. They will now go through beta testing and datalogging in the AZ desert heat for the next few weeks. It has been about 115 Deg F regularly, so this will be a good test of the tunes safety. As of right now, there are no changes to the knock tables, so the factory knock protection has not been reduced.

Although there will be more features added in the future, all consumer tunes will have the following features in addition to raised boost, timing & egas changes and fuel corrections for intake and/or exhaust:

High Gear Rev limit raised by 300 RPMs
Low Gear Rev Limit raised by 500 RPMs
High Gear Speed limiter raised by 15 MPH
Low Gear Speed Limiter raised by 10 MPH
Reverse Gear Speed Limiter raised by 10 MPH
Torque Limiters Removed
Cooling/Intercooler Heat Exchanger Fan on temp lowered by 20 Deg F

We can customize speed limits, rev limits, fan temps, etc for each customer if desired.
 
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