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August 11th, 2017, 12:31 AM   #1
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I Ride: when I can which isn't often enough. FX450, FE570
FX450 dyno

I had the 450 dynoed today.

57.0 HP

Wossner 11.8:1 piston kit, 8 thou off the base of the barrel to achieve approx 13.0:1 CR, 570 cam, Barrett end cap on the muffler, seat and radiator shrouds cut back to open up the airbox.

The first run was done with the standard FX ECU. It achieved 57.0 HP. The Vortex ECU also achieved 57.0 HP. The difference is the AFR's.
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FX450 dyno-20170811_180149.jpg  
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Last edited by Alan; August 11th, 2017 at 12:36 AM.
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August 11th, 2017, 01:28 AM   #2
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1
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August 11th, 2017, 01:43 AM   #3
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I Ride: when I can which isn't often enough. FX450, FE570
Could someone with some knowledge give some input?

Looking at the AFR's, the sole blue line is with the std FX ECU. The rest is with the Vortex from my 570.

The FX ECU looks a tad lean but usable on the track where it will be working hard in the upper.

The Vortex looks very rich.

Would this thinking be right?

Thanks guys.

Last edited by Alan; August 11th, 2017 at 01:27 PM.
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August 11th, 2017, 03:12 AM   #4
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I have studied the graphs a little more and what I have forgotten to do which could have achieved a little more was I forgot to fit the map switch for when the FX ECU was fitted, so it ran in the STD position.

It will be interesting to see how it performs with some increase in fuelling.
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August 11th, 2017, 03:53 AM   #5
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Whoa!

That's quite something. Impressive, and very useful info. Thank you.

Hey - With that compression ratio, what fuel do you run?
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August 11th, 2017, 04:50 AM   #6
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Originally Posted by tourist View Post
Whoa!

That's quite something. Impressive, and very useful info. Thank you.

Hey - With that compression ratio, what fuel do you run?
Not bad for some cheap/easy mods.

98. It may run fine on 95, I'm not sure. 98 is expensive but I only run this on the track mostly.
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August 11th, 2017, 11:08 AM   #7
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I Ride: FX450 - sold, '08 KTM 690SMR, '12 KTM250SXF (SOLD) 2016 Husky FC250 new race bike!
Apparently timing isn't an issue with the 570 cam???
Very impressive numbers. Any torque numbers?

Congrats on the results.
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August 11th, 2017, 01:25 PM   #8
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Originally Posted by RogerB39 View Post
Apparently timing isn't an issue with the 570 cam???
Very impressive numbers. Any torque numbers?

Congrats on the results.
No torque numbers provided Roger. I can tell you though, it's not lacking at all anywhere in the rev range. Last week I had it out bush with the off-road wheels fitted and it was beautiful. Was better than my 570 in the single track.

Timing as in dialling in or numbers? They don't have prevision for dialing in but the cam specs from my understanding is the inlet numbers are the same as the 450 but longer duration in the exhaust. One day when I get a chance I'll check the specs of this cam. It a used 530/570 cam. It's a simple/cheap means of a cam upgrade for the 450.
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September 5th, 2017, 09:34 PM   #9
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I Ride: when I can which isn't often enough. FX450, FE570
I had the 450 do a rerun on the dyno as I fitted a piggy back tuner the original FX ECU.

It picked up a tad over the Vortex but an oh so much nicer curve. These tuners do a good job.
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September 5th, 2017, 11:28 PM   #10
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its my understanding that the 450 and 570 cams make different power curves have different lift and duration and what you gain with one you lose with the other.

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