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hey new to forum, does anybody know why the 900 s is 75 hp where the 900 xp is 88hp? I'm pretty sure they are the same engine. My question is can a guy put the ECM from the 900xp in the 900 s and gain the extra horsepower?
thanks for any input
Brian
 

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The 88 HP versions were about as quick as the 1000s due to the weight difference so Polaris "fixed" it. My 2012 900 will go 78 mph stock and a 1000 is speed limited to 73 mph.
I believe the ECU plug is different between them and cannot be switched. There are companies out there that will reprogram your ECU but it's fairly pricey. I believe it's $6-700....
 

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The 88 HP versions were about as quick as the 1000s due to the weight difference so Polaris "fixed" it. My 2012 900 will go 78 mph stock and a 1000 is speed limited to 73 mph.
I believe the ECU plug is different between them and cannot be switched. There are companies out there that will reprogram your ECU but it's fairly pricey. I believe it's $6-700....
The only 1000 that is limited to 73 is the 2015 four seat, the rest are not but rev limited at 8700 and most run 80
 

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There are lots of different parts in the 88 hp motor. I looked the numbers up when the 900 Ranger was introduced. I don't remember all the differences.

The 75 hp motor is the same as the Ranger motor, we all know that.

If you want a RZR s with 88hp you could always buy a 1000 s and have 100 (bonus 12). :).
 
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