Torque/HP
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Road Master
Joined: Oct 2008
Posts: 886
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I don't know... I'm almost tempted to just dump some more money and get it re-dyno'd somewhere else. Could there maybe be something wrong with the engine? What would cause the tune to go out in the first place? I didn't change anything on the setup. I did put compression release valves in... could that have caused an issue? Also my bike started to run real hot and was eating oil a lot. No oil on the plugs, exhaust, or active leaks, but in 1000 miles I would eat about 1/2 quart of oil and it would turn black real quick... got so I was changing oil every 1000 miles or so. It didn't smell burnt and still felt good... I just can't understand what happened to my numbers. Or maybe the Dyno is wrong...
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
I don't know... I'm almost tempted to just dump some more money and get it re-dyno'd somewhere else. Could there maybe be something wrong with the engine? What would cause the tune to go out in the first place? I didn't change anything on the setup. I did put compression release valves in... could that have caused an issue? Also my bike started to run real hot and was eating oil a lot. No oil on the plugs, exhaust, or active leaks, but in 1000 miles I would eat about 1/2 quart of oil and it would turn black real quick... got so I was changing oil every 1000 miles or so. It didn't smell burnt and still felt good... I just can't understand what happened to my numbers. Or maybe the Dyno is wrong...
STD shows higher numbers than SAE. The SAE numbers are more accurate.
As far as using oil, you have other issues not related to the tune.
I hope you are overfilling it, because that too will often cause oil to dissapear into your throttlebody and carbon up the insides of your motor.
Keep it closer to the halfway point between add/full.
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
Doesn't powder pro Joe run that exhaust? I think he's 94/98 with his build with headwork...so maybe your dyno guy is correct and those pipes just really hold your bike back that extra 3-4 horses and 10 ft lbs........it would be interesting to see a comparison of changing to a good 2-1 and actually see if the exhaust is holding you back.
Numbers do seem pretty low for cams/BB kit though.
Numbers do seem pretty low for cams/BB kit though.
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
Also,... it appears the tuner only set the afr and didn't spend a lot of time making any timing changes. There appears to be a low number of runs between the early and later runs. There might be some more power available from tuning it some more.
I'd go to a (proven) reputable tuner, but first get some better performing pipes.
My 103 with mild cam (Andrew's 54's) and some headwork, with a 2 into 1 pipe is doing 104hp/114 torque (SAE on a stingy dyno).
I've got a very reputable tuner.
.
I'd go to a (proven) reputable tuner, but first get some better performing pipes.
My 103 with mild cam (Andrew's 54's) and some headwork, with a 2 into 1 pipe is doing 104hp/114 torque (SAE on a stingy dyno).
I've got a very reputable tuner.
.
Last edited by Faast Ed; Oct 17, 2010 at 08:27 AM.
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Tourer
Joined: May 2010
Posts: 348
Likes: 5
From: The mitten state
The "front and rear" hocus pocus seems to be more of the same.
My guess here is that HP/ torque numbers are simply two different runs and the operator "LABELED" front and rear based on which cylinder's A/F ratio he had at the bottom! Is was not intended to show "HP/torque" differences vs. front and rear, but merely he only could measure one cylinder's A/F ratio during each run! The label is for A/F not Hp/Torque!! And he had "wonky" scaling on the graphs
Y axis also!
Last edited by FBRR; Oct 17, 2010 at 09:20 AM.
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
HP and Torque are EQUAL at 5252 as that is the constant and the math insures they are equal. However, they donot "have to cross" at 5252 if the scaling on both sides of the graph ( and IF HP and Torque are graphed using a different Y axis). In the on set of graphs the scaling appear different if you look at the "50" break point. It appears to be a scaling issue. As to "recording" front vs. back cylinder, while getting OUTPUT from the rear wheel ( which again seems to be the case based on the numbers) it is BS to be able to seperate individual cylinder HP/Torque! You will notice the "label" front and REAR are hand written! There is a reason for that! Some tuners are notorious for "making" the number! That is running several runs and always getting an inprovement over the "baseline."
The "front and rear" hocus pocus seems to be more of the same.
The "front and rear" hocus pocus seems to be more of the same.
You can not read the afr on both cylinders, using one probe.
You will get a 1 point difference from one run to the next. Nothing to do with separate cylinders.