P500 More horse power

[Delton]

Thats not 100% the stock ecu can compensate + and - a bit which is how they can sell it with the same settings at all elevations

Yeah it can compensate fuel. More fuel is easy, its the more air part that is the real trick.

 

[jak9922]

More air will cause it to run leaner the o2 sensor will pick that up and send more fuel now as far as how much i do not know

 

[Wendell_Jimbob]

While I agree with your sentimentality on HP, I'm not sure the P500 needs more. I have been very impressed with mine. I've overloaded it, put it on steep, twisting, loose trails, and have never been short on power. When looking at specs, and comparing HP ratings with other 50" machines, you would think that the P500 would be lacking. This is not the case, and I believe that I know why. It doesn't matter how much HP you have, if you can't get it to the ground, it's useless. The low gearing, and power-to-weight ratio of the P500 is very efficient. Every bit of HP is transferred to the ground. CVT machines rely on "rim speed" to operate to potential. However, due to wheel spin and belt slippage, it is not a very efficient transfer of power. They have to have higher HP numbers, as a percentage of power is "wasted". It is kind of like a diesel motor versus a gasoline motor in a truck. Gas motors have more HP and higher optimum RPM ranges, while diesels have more torque and lower optimum RPM ranges. If you want to run fast, you go with gasoline, if you want to pull a load, you buy a diesel. I'm sure that a judicious upgrade in HP would appeal to many P500 owners, but if it resulted in "wheel spin" or loss of "contact torque" it would become a wasted effort. Honda did a really good job on finding a balance between the two on this machine. I'm an uncontrollable tinkerer, and an old drag racer, but I don't see any reason to mess with the drivetrain on mine.

Try running a P500 at 11'000 ft. I have already lost 1/3 of my HP when I pull out of the shed up here due to the thin air. I get by OK in the summer but when running in snow that is at upper limit of my wheel size I cant get out of 2nd gear. That means I cant keep up enuf momentum to blast thru/over tough places. I NEED MORE POWER

 

[Alan aka Davinci]

Adding a HONDASXS.com sticker adds 10 HP minimum

What the hell would happen if you add 10 of them, would your the P5 be more tippy?

 

[JACKAL]

What the hell would happen if you add 10 of them, would your the P5 be more tippy?

Never in a straight line.

 

[JCart]

Anyone install one of these yet Honda Pioneer 500 - Dobeck Performance Products: EFI Controllers, AFR Gauge thinking this will aid in power/torque which can be set by operator, based on AIr Fuel Ratios and monitored too. Looks like a cool set up and provides instant feed back on settings. Now to find a slip on exhaust.....

 

[JCart]

So I’m looking to do a slip on exhaust (for some time now) and thinking I’m gonna retro fit something either by removing the cat and stock muffler or perhaps leave the cat (hollowed out) and attaching a muffler down flow of that. So far had a look at an FMF PowerCore 4 with 2” ID at the slip end for a Husky 450 4 stroker, (dirt bike) just not sure how loud it’ll be. Hav’ta measure the output side of the cat as it might be 2” although its a challenge without taking the rack/fenders off. Will try to get on that Saturday. Initially thinking knocking out the cat and doing a slip on post cat might be quieter although not sure on performance increases, compared to removing after the O2 sensor. Hopefully once I get that sorted I’d like to give the Dobeck AFI and programer a try. Anybody done this yet?

Any insights would be great, like I don’t get the big swoop in stock pipe, I don’t understand if that’s for emmisions or torque or HP or to cool exhaust before O2 sensor? If a guy wanted to build a system would you eliminate the big swoop? Where would I read up on the design rational?
Thanks,
j

 

[Deleted member 3748]

Anyone install one of these yet Honda Pioneer 500 - Dobeck Performance Products: EFI Controllers, AFR Gauge thinking this will aid in power/torque which can be set by operator, based on AIr Fuel Ratios and monitored too. Looks like a cool set up and provides instant feed back on settings. Now to find a slip on exhaust.....

@jak9922 has the Dobeck and FMF or HMF pipe. You can see the DObeck in one of his videos >>> Jak9922

 

[JCart]

Thanks Piston... those are so cool @jak9922 was laughing at myself as my feet were twitchin and my head was tipping on a couple of those rides jak9922. Love the enhanced low down HP and Torque now I’m all fire up to get this done.
Thanks again,
j

 

[jak9922]

with the exhaust and afr+ it feels amazing... with just yhe exhaust the throttle response was mich better and it didn't bog as much but with the dobeck it really brought it all together

 

[JCart]

with the exhaust and afr+ it feels amazing... with just yhe exhaust the throttle response was mich better and it didn't bog as much but with the dobeck it really brought it all together

Thanks jak9922.