What are the “all-terrain vehicle”? They are special vehicles, solid and agile, built to keep on going on rugged, steep and rough terrains.

The project was first realized in Canada during the sixties, taking inspiration from the little golf cars used on the pitch; quickly they spread all around the USA and in Europe too in the following decade. At the end of the sixties they were very popular, only in America about two millions of vehicles were sold.

They anyway disappeared from the market at the end of the seventies, only a small amount of them was still produced by some American factories, often for military or specific use.

From the beginning of the 21^st century the name ATV was used to identify quads. Modern "quads" are different from their predecessors mainly for having lost their amphibious characteristics for a more motorcycle approach.

Side by sides are a derivation from ATV and can be divided in:

-UTV: Utility Task Vehicle

-ROV (Recreational Off-Highway Vehicle)

-MOHUV (Multipurpose Off-Highway Utility Vehicle

As the name suggests, they have two seats side by side, this is the main difference as ATVs (quads) feature only one seat.

The three vehicles we analyze today are:

 

-          “2015” POLARIS ACE 570 -> 45CV@6700rpm, 47Nm@6000rpm -> ECU Bosch M17.8.7

-          “2014” CAN AM MAVERICK 1000R V-Twin 976cc 8v -> 101CV@8000rpm, 100Nm@7500rpm -> ECU Bosch MED17.8.5

-          “2013” CF MOTO TERRACROSS 625 EX 600 4v -> 38CV@6300rpm, 46Nm@5500rpm -> ECU Siemens MSE3.0

 

Here is also a complete list of the vehicles of the same manufacturer featuring the ECUs we support:

Brand	Model	Engine	ECU
Polaris	ACE	570	Bosch M17.8.7
Polaris	Ranger	570	Bosch M17.8.7
Polaris	Ranger Crew	570	Bosch M17.8.7
Polaris	Ranger XP	570	Bosch M17.8.7
Polaris	RZR	570	Bosch M17.8.7
Polaris	RZR	800	Bosch M17.8.7
Polaris	RZR	900	Bosch M17.8.7
Polaris	Sportsman	450	Bosch M17.8.7
Polaris	Sportsman	570	Bosch M17.8.7
Can Am	Bombardier	1000	Bosch MED17.8.5
Can Am	Maverick	1000	Bosch MED17.8.5
Can Am	Maverick Turbo	1000	Bosch MED17.8.5
Can Am	Spider RT	1000	Bosch MED17.8.5
Can Am	Spyder F3	1330	Bosch MED17.8.5
CF Moto	Cforce	450	Siemens MSE3.0
CF Moto	Terracross	600	Siemens MSE3.0
CF Moto	X6 Terralander	600	Siemens MSE3.0

 

We find the Bosch M17.8.7 also on Bajaj and KTM.

MED17.8.5 on Sea Doo e Ski Doo.

And MSE3.0 on Goes.

 

Let’s analyze them case by case.

 

POLARIS ACE 570 45CV - Bosch M17.8.7

 

It mixes the agility of an ATV with the safety and the comfort of a side by side, supporting an AWD on demand system that engages all the four wheels when the rear ones skid, and gets back to the 2WD when the AWD is not necessary anymore.

It supports a 570cc single-cylinder engine providing 45CV at 6700rpm and a maximum torque of 47Nm at 6000rpm.

 

 

How do you read it and where is it located?

ECU Details

Manufacturer: Bosch

Model: M17.8.7

Microcontroller: Tricore IROM TC1762

EEprom: Inside the microprocessor

 

 

 

 

What do you need to read the ECU?

K-TAG - Bootloader Tricore - Plugin 307

- Read: YES

- Write: YES

- Checksum Correction: YES

 

Only a direct connection is possible, using the cable 14P600KT02 connected to the ECU.

 

KESSv2 - Bootloader Tricore – Protocollo 226 plugin 307

- Read: YES

- Write: YES

- Checksum Correction: YES

 

Only a direct connection to the ECU is possible, using:

- Infineon Tricore Module 14P600BTLR

-Power Suply 1400SWALIM

-Cable 14P600KT02

-Soldering wires

 

Here is an overview of the maps

 

 

Requested engine load:

This map expresses the % of requested air by the engine, according to the RPM and the percentage of throttle. As we see, the map stands just over 100% because we are dealing with an aspirated engine; when we have a turbo engine the % of air will be much higher than 100%, sometimes even achieving 200%.

 

 

 

 

 

Requested Lambda

It allows the engine to exit the “closed loop” (when the injection is set to keep lambda =1), so it enriches the carburation at high RPM and high engine load.

 

Advanced base map

It expresses the degrees of advance on the BTDC (before top dead centre) according to the % of air and of RPM

 

 

RPM limiters

We have many maps about the RPM limiters: lower limit, higher limit and “standard RPM” limiter.

Limiters are many so to take action in different situations; , you have then the “standard RPM” limiter that works in standard condition; in this case it is set to 7750 rpm

 

CAN AM MAVERICK 1000R V-Twin 976cc 8v - Bosch MED17.8.5

 

Side by side with a 2-cylinder 8 valve ROTAX 976 V-Twin:

 

It is one of the most powerful aspirated engine in its category of side by side with 101CV at 8000 rpm and 100Nm torque at 7500rpm.

Among its features you may find:

Rear suspension with independent transverse torsion bar (TTI): it helps to eliminate the variations of scrub and camber of the wheels that can now move up and down instead of the standard “butterfly movement”. The range of the rear suspension is 25,4 cm and an outer bar give more power to the traction, improving also the stability while turning.

Rear suspension with longitudinal torsion A brackets (TTA): it eliminates the recoils, improving at the same time the control on bumps and the roadholding. It has a lighter weight compared to other side by side vehicles and has a range of 35,5 cm.

Three mode dynamic power steering (DPS) with Visco-Lok QE: The electronic power steering gives to the driver three different modes during the steering. The modes vary according to the vehicle, setting automatically the steering. It also reduces the vibrations coming from rugged terrains. All side by side vehicles supporting a DPS feature a front limited slip differential Visco-Lok QE that provide the same advantages of a Visco-Lok, but with a faster action.

How do you read it and where is it located?

ECU details

Manufacturer: Bosch

Model: MED17.8.5

Microcontroller: Tricore IROM TC1766

EEprom: Inside the microprocessor

 

 

 

 

 

 

 

What do you need to read this ECU?

K-TAG - Bootloader Tricore - Plugin 180

- Read: YES

- Write: YES

- Checksum Correction: YES

 

Only a direct connection is possible, using the cable 14P600KT02 connected to the ECU.

KESSv2 - Bootloader Tricore – Protocollo 226 plugin 180

- Read: YES

- Write: YES

- Checksum Correction: YES

 

The direct connection is the only possible, using:

- Infineon Tricore module 14P600BTLR

-Supply Alimentatore 1400SWALIM

-Cable 14P600KT02

-Soldering wires

 

 

Here is an overview of the maps

 

Optimal engine torque

It expresses in % of Nm the optimal engine torque according to the % of air (the parameters are just a little higher than 100% because it is an aspirated engine) and RPM.

 

Requested Lambda

It expresses the lambda value according to the % of air and RPM.

 

Requested engine load

It expresses the % of air intaking the engine (engine load) according to the atmospheric pressure and the RPM.
As you can see in the map, the RPM may reach 16000rpm, but this side by side can reach only 8000rpm

So the map must be read only in this area:

 

RPM limiters

This is the RPM limiter, able to arrive only to 8000rpm

 

 

CF MOTO TERRACROSS 625 EX 600 4v – Siemens MSE3.0

 

It has a single-cylinder 600cc engine suppling a power of 38CV at 6300rpm with a maximum torque of 46Nm at 5500rpm. It easily allows you to switch with a single command from a 2WD to an AWD.

How do you read it?

ECU Details

Manufacturer: Siemens

Model: MSE3.0

Microcontroller: ST10F275

EEprom: ST95080

 

What do you need to read this ECU?

K-TAG - Bootloader ST10Fxxx - Plugin 323

- Read: YES

- Write: YES

- Checksum Correction: YES

Only a direct connection is possible, using the cable 14P600KT02 connected to the ECU.

Here is an overview of the maps:

 

 

Lambda to protect components

It sets a carburetion to prevent any damage to the catalyst or knocking.

 

Throttle valve – accelerator pedal

This map expresses the ratio between the position of the throttle valve and the accelerator pedal, for example at 100% for the accelerator pedal will correspond 69% of the opening of the throttle valve.

 

 

We managed to improve either the map for the base spark advance or the one about the optimal spark advance. It’s important to make a distinction between the two maps because the optimal spark advance map represents the limit for a modification while the base spark advance map is about standard condition.

 

Spark advance base map

 

Optimal spark advance map

 

RPM limiter

Also in this case we have two RPM limiters, one “standard” and one set to a higher value

 

Standard 

Higher Value