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KUNG FU SAND PANDA
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Discussion Starter · #1 · (Edited)
For those of you who do not know Yamaha has a speed sensor installed into the transmission. What it does is in 5th gear at somewhere around 7500 it starts de-rating your timing and ultimately governing your top speed. This modification is geared for those of you who have done performance mods like the “Big 3” and more. On a stock Raptor 700 you won’t see the benefits as much.

The only thing you will have is a sensor in your transmission with 3 wires about a foot long that you will need to tie up.

Where to find your speed sensor.

On top of the engine, drivers side, to the left of the serial # stamping.



Benefits:

Top speed should increase 6 - 9 MPH

Affects:

If the check engine light comes on, you will need to plug it back in... then roll forward a few quad lengths and the light goes out, then unplug it again.

Modded Raptor would like to thank Shredder770
 

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JB,

So you're saying that the only negative about doing this is the occasional having to "plug it back in for a few feet"? There's no risk to the tranny or engine?
 

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KUNG FU SAND PANDA
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Discussion Starter · #3 ·
From what I've read and heard from others that have done this mod, one of the only affect is that it will turn your "check engine" light on after so many hours of running it unpluged. If the check engine light comes on, you will need to plug it back in... then roll forward a few quad lengths and the light goes out, then unplug it again. My Raptor is all stock right now and this mod is for guys that have done the big three or more.

-Johnny
 

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this sheet shows the power advantage from disconnecting the sensor...the power drop is at 7000 rpm....the more power your bike makes the bigger the difference the sensor makes
 

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hey i unpluged the sensor and picked up 5mph, now i dont want to have a two ends unpluged just chillin geting dust and what not in there. so i wanted to hook up a switch so i can turn it on or off when i like, what one of the three wires do i run to the switch?
 

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has anybody tried getting another connector and just running a loop to bypass the sensor? can it be done so the check engine light doesn't come on at all?
 
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