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Discussion Starter · #1 ·
I'm getting all this fitted next month thanks to a friend who runs a tuning shop and dyno centre, but he's never done one before. Has anyone had this done? Do you have any before and after dyno runs?

Cheers
 

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Teerex51 said:
PCIII USB + K&N Filter + LeoVince (street legal) cans + Dynojet custom map = +3HP at the wheel, i.e.: 130HP

Stef
What was the torque figure and engine temp before and after Stef?
 

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All that for three HP? Maybe I am getting older but I am not seeing it anymore. Cost per HP? I can understand a good sounding pipe though. I'm not that old.
 

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Agrees with what has been said all along since Joos did his first dyno tests, the limiting factors on horsepower aren't in the fuel, air or exhaust systems, they're inside the motor.
 

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marshman said:
Agrees with what has been said all along since Joos did his first dyno tests, the limiting factors on horsepower aren't in the fuel, air or exhaust systems, they're inside the motor.
Why not just leave off the pies for a bit?
 

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Playing with oily bits of machinery is a man thing, dieting is womens work :lol:





Where the hells that sofa when you need it? :shock:
 

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Why not just leave off the pies for a bit?
Now your talking. Only problem is that it's not that fun. I have been "recently" guilty of it myself ( I currently own a Vmax). But either from updated wisdom (from getting older) or the kids college fund deposits I find it harder to spend the cash and take the chance anymore.

I wonder how much weight a 150 lbs individual would have to loose in order to equal a 3 hp increase in performance? Not that good with math though. I am sure that someone on this forum is.

Bryon
06 in April I am told.
 

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lb/hp

I don't think it is worth the difference.
Bruce

FJR Rider Payload hp #/hp 3xtr HP R #/hp
531 115 646 127 5.09 130 4.97
531 120 651 127 5.13 130 5.01
531 125 656 127 5.17 130 5.05
531 130 661 127 5.20 130 5.08
531 135 666 127 5.24 130 5.12
531 140 671 127 5.28 130 5.16
531 145 676 127 5.32 130 5.20
531 150 681 127 5.36 130 5.24
531 155 686 127 5.40 130 5.28
531 160 691 127 5.44 130 5.32
531 165 696 127 5.48 130 5.35
531 170 701 127 5.52 130 5.39
531 175 706 127 5.56 130 5.43
531 180 711 127 5.60 130 5.47
531 185 716 127 5.64 130 5.51
531 190 721 127 5.68 130 5.55
531 195 726 127 5.72 130 5.58
531 200 731 127 5.76 130 5.62
531 205 736 127 5.80 130 5.66
531 210 741 127 5.83 130 5.70
531 215 746 127 5.87 130 5.74
531 220 751 127 5.91 130 5.78
531 225 756 127 5.95 130 5.82
531 230 761 127 5.99 130 5.85
531 235 766 127 6.03 130 5.89
531 240 771 127 6.07 130 5.93
531 245 776 127 6.11 130 5.97
531 250 781 127 6.15 130 6.01
 

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So, if I'm reading this properly...
I @~195 lbs (no laughter please) have a 5.72 pound/Horse Power ratio.
An extra 3 HP reduces the ratio to 5.58 #/HP
To loose enough weight to achieve the +3 HP ratio I'd have to get down to about 178 pounds.
Hmmmm dieting @ 2 lbs per week, to drop the 17 pounds would take 9 weeks... puts us into late March. This is doable.
Of course then the +3HP ratio is 5.47, and to get that via dieting I'd have to get to 165ish (maybe doable).
 

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marshman said:
Playing with oily bits is a man thing, dieting is womens work :lol:

Where the hells that pie and chips when you need it? :shock:
HMMM. Yes. I see what you mean, MM.
 

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PCIII

I have Staintunes,K&N and a PCIII on my '03 US FJR.

The big gain with the PCIII is in mid-range torque and drivability. It used to buck at low/mid engine speeds and it got HOT. Now it is quite smooth and is noticably cooler.

The improvement on 4000-6500 rpm torque is very easily felt.

I do not know if max HP is improved nor do I care. I use that very infrequently but I use mid-range everytime I ride.

Definately worth the cost!

Paint
 

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Discussion Starter · #14 ·
The results are in



Red is running without an airbox :shock:
Green is how it is
Blue is how it was
 

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Uni Filter
D&D cans (http://www.bikes-n-spikes.org/mods/cans/cans.html)
PC3/USB
Dyno tuned (http://www.bikes-n-spikes.org/maint/dyno/dyno.html)

Yes, as others have noted, it's best to do a run BEFORE putting all the aftermarket bits on. I didn't have a way to get them to the shop without them being installed and didn't want to spend the cash for a second dyno session/2nd trip/2nd appointment.

The main reasons aren't power. They are:

1. Uni-Filter - reusable
2. D&D cans (sound good)
3. PC3/USB (Wallies Smoothness Map)
 

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Re: The results are in

human said:


Red is running without an airbox :shock:
Green is how it is
Blue is how it was
There are definitely increases in power and torque, but it appears the big effect has been smoothing out the performance particularly the torque. Just to confirm the mods were Staintune slip ons, PCIII, K&N filter and custom map ?
 

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Discussion Starter · #17 ·
Blueflame cans, PCIII, custom airbox modification, and a custom map. The K&N filter apparently wasn't getting enough air in, hence the trial without the airbox.
 

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human said:
Blueflame cans, PCIII, custom airbox modification, and a custom map. The K&N filter apparently wasn't getting enough air in, hence the trial without the airbox.
What did the custom air box modification involve ?
 

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human said:
I think he manufactured a new lid. To be honest, I'm an end user :oops:
The reason I ask is because air box harmonics and modifications have been very "difficult business" for all contenders thus far. I have heard descriptions of air box mods as best being attempted with the accompanyment of a spirit rattle in one hand and a chicken bone secreted in one's beard.

The very linear nature of the power AND torque graphs plus a progressive increase in both of them suggests that between the mods and the custom map this has been a very good result for you. Please - you vill tell uz all you know - ve know vere you live !

Ram air and air box mods / pressurization look like a relatively easy way to find power - this is not new technology. If the ECU and sensors can handle the difference between inlet air flow and air box pressure when the bike is stationary or on a dyno Vs the inlet effects of varying road speed, then redirecting cool air ducts into a sealed air box may show benefits particularly if the ram air inlet dimensions are large enough.

Could a 0.020" reduction in head gasket thickness, cam chain adjustment, air filter and exhaust flow upgrade plus appropriately sized ram air set up shift the FJR power to weight ratio to that of a more responsive mount - particularly when 2 up or loaded to tour solo with luggage.

Where's an expert when you need one - Marshman - Sherlock - save us you thenthative thouls !!!
 
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