Engine Differences between 500 EFI HO and 500 EFI
May 14, 2008 | 02:14 AM
#1
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Pro Rider
Joined: Jul 2006
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Engine Differences between 500 EFI HO and 500 EFI
i cant seem to figure this one out , but Im thinking the HO Efi Model is higher compression that the standard EFI model. any Input would be Appreciated. RP
May 14, 2008 | 02:23 AM
#2
Extreme Pro Rider
God forbid he lets the polishing secret out!
God forbid he lets the polishing secret out!
Joined: Jul 2006
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Engine Differences between 500 EFI HO and 500 EFI
The H.O has a "40 mm carb" and the EFI has a "39mm throttle body". The H.O is rated at 34.5 hp while the EFI is 36hp. The motor itself are the exact same.
May 14, 2008 | 02:31 AM
#3
Moto Psycho
Joined: May 2008
Posts: 8,747
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From: Michigan
Engine Differences between 500 EFI HO and 500 EFI
Both 499cc. 4-5% more power with EFI. Actually it's a little better than some "performance" mods. Like a pipe with no other mods, that only gives you 1 extra HP depsite the outrageous claims they make about them. Better mileage with EFI too because it's more efficient.
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Jul 18, 2015 07:20 PM
2006, atv, differance, difference, differences, diffrence, efi, engine, ho, polaris, sportsman, whats
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