• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

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511 Dyno Tuned

jerbear610

jerbear610

Husqvarna
Pro Class
I had my bike tuned on the Dyno Machine and the results are in. On paper I'm a little underwhelmed, I guess. I don't know it seems like this bike should have more than 43.4 HP.
He said a couple things factor into the results. We've been experiencing record low temps here
in NorCal and also the fact that I've got a 48t rear sprocket as apposed to the 51t stock.
Even though it's cool to say "my bike is puttin' out 50 ponies" none of that really matters because
what I'm concerned about is how it feels when actually riding. The difference in power is nothing
short of amazing. Not that I really needed more power but it's very noticeable and the throttle
response and torque are way up. I thought my 511 was at peak performance after running the
Auto Tune for a couple months but there was a lot more to be extracted.
I'm considering maybe selling my AT soon. Will post it here first if and when I do.











The blue line is before his adjustments. Red is after. Huge gains in midrange and torque.
 
The air fuel should be a lot more consistent.
What other mods do you have?
How did you break in the motor?

Thats about exactly the same HP/ TQ as my 449 - decatted stock exhaust and map3 + jd tuner were the only mods
fwiw I broke mine in as hard as I could.
 
You'd have to strap a bike down pretty damn hard to stop all movement/flex of the tread on a knobby.
 
danny318 said:
Can you show some proof of this? If the tire does not slip (and a knobby doesnt slip if the bike is strapped down properly) then it wont affect the numbers at all.
Click to expand...
I can absolutely not show proof of this, this is just what the local PC tuner told me. I was just trying to reason the reported "low" numbers against the seat of the pants feel reported by the OP.
 
That sounds about right from my butt dyno. I have dynoed both of my TC449s and both landed in the 47-48hp area. They we noticeably more powerful than my TE511. Just my two cents.
 
jerbear610 said:
We've been experiencing record low temps here
Click to expand...
When the temperature is low, the air is thicker, so it contains more oxygen. The ECU should, therefore, make the injector sprinkle more fuel and the engine should be more powerful.
jerbear610 said:
I've got a 48t rear sprocket as apposed to the 51t stock.
Click to expand...
That could have affected the HP, indeed, IMO. What gear did you use during the test?
Anyway,
jerbear610 said:
On paper I'm a little underwhelmed, I guess.
Click to expand...
:(
jerbear610 said:
what I'm concerned about is how it feels when actually riding.
Click to expand...
:thumbsup:
You've made your engine gain power and torque and that's good.
You don't have a TC or an SMR RR; considering the displacement, the bike weight and the maintenance required, 43.4 HP is not so low, IMO.
The TC is more powerful, but, according to the owner's manual, it needs more maintenance.
An Honda CRF is lighter and maybe would have shown 50 HP, but, again, its maintenance is more demanding.
 
Some of the variables that come in to play according to the Tech would be the smaller rear sprocket, the fact that it was 40 degrees at the time of testing
(his words) why the temp would be a factor I don't know. Maybe it affects his equipment. Also, his Dyno isn't a Dynojet machine, it's made by the people who make
the Bizzaz Tuner. Not sure if that's how it's spelled but anyway it's the same thing, you'd think.
To answer some question... no, he didn't test it with my knobby, he put a street tire on. The mods to my motor are just the PCV w/AT and the PowerCore muffler
and 48t rear sprocket. I wasn't there when he ran it, I dropped it off Thurs. morning before work and picked it on Friday night. He did some other work as well.
Front forks serviced, fresh oil and new seals and bushings, greased the inner pivot bearings on the swingarm and linkage and steering head. While I was there we dialed in my rear shock, adjusted race sag to 105mm, high and low speed compression and rebound. Before the dyno tuning he checked valve clearance and put in new sparkplug.
My break method is just ride it. Not WOT ripping but not putting around either, just ride. Changed oil after first ride and cleaned oil that was everywhere from being
grossly overfilled from factory.
The guy who did the work is Aaron, BHP. http://bhpmoto.com/dyno/
Whether or not it's a totally accurate HP # is not a concern to me because of the unbelievable difference in power,throttle response and overall feeling of the bike.
I was pretty pleased with my power output before having this done. Now, WOW ! I can't wait to get her in the dirt.
 
First off, a TC449 is NOT more powerful than a properly tuned 511. I hear this rumor a lot, it is not true. Off the showroom floor there is no comparison, but once properly tuned, the 511 has more power. The TC feels more powerful because the cams yield a steeper power curve, but flatten off where the TE cams keep climbing. TC cams give quick bursts of power on the motocross track and probably for the street tracks.

Those numbers are low. The biggest factor I see is that the dyno is that it has not properly been calibrated. Your gearing should be stock when testing if you are going to compare against another. Power should of been recorded in 4th gear. Did you ever load my NB maps? I would like to see a copy of your maps if possible. I would not sell your Autotune and you should still be using it, even with a professional tune. Set variable to +/- 5%.
 
At some point I might go back to stock gearing and run it again. I went riding yesterday (off-road) despite the fact that it was freezing cold out and the
foothills were blanketed with snow. Prairie City is where I ended going just because it's convenient. When I was a kid I actually loved riding there.
In the two and a half years that I've had my 511 this is the absolute best it's ever felt powerwise and handling. This bike flat out rips. It's got way more
power than I'll ever need for the type of riding I do. I noticed he lowered the idle quite a bit but not a single flame-out all day.

View: https://www.youtube.com/watch?v=qnL1LwIz5Ow&feature=c4-overview&list=UULTcPir9hLIM0LjjKMQ8qdw


View: https://www.youtube.com/watch?v=brXAM7hhhes&feature=c4-overview&list=UULTcPir9hLIM0LjjKMQ8qdw
 
Ripping is an understatement. When tuned, it performs better than a 511cc bike. When modded, it is a monster.
 
Mine dyno'd out at 47 rwhp with 15-45t... Viva jd ! Lucky new owner , more poke with the new one . Just saying
 
Rearwheelin said:
Mine dyno'd out at 47 rwhp with 15-45t... Viva jd ! Lucky new owner , more poke with the new one . Just saying
Click to expand...
Actually, Malcolm shipped your used 511 to our shop where we removed all your add-ons and returned the bike back to stock form before shipping it back to Malcolm. Just saying.
 
If your not doing competitive riding (race only) then who cares about how much the dyno is saying! I don't know how many i've seen spending endless of money on there bikes HP figure but nothing on the things that matters.

I want a bike that pulls seamless and handles better then i can manage.
 
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