Bike back from Dyno, results!

L

Loofster

New member
You guys... Read the post again. You agree.

He said.... engines without exotic anything to include heads, cams, exhaust, basic and typical configuration takes 2 hours max...using a PCV...

For the record, I posted this to back up r8rs4lf on why his tune only took 1.25 hours.

lp
 
V&H Monster Ovals and stage 1 A/C and stock headpipe/catalytic converter. I'm installing V&H Power dual's to the mix now to get rid of the cat. I know this will lean the bike out quite a bit so will have to go through another dyno tune (3hrs) I can't find any downloads that have both the Monster Ovals and Power duals so the off to the dyno I go. My AFR is almost a straight line 13.2 to 1 ratio right across the rpm scale, and was wonder if anyone had a clue as to what to expect before the dyno work?
here's my current dyno sheet.
 
I was following your initial thread and posted a response on there as well.

I just dropped my bike off at Cycle Doctor in Costa Mesa and I also have the Basic Stage 1 upgrades and PCV.

He explained in detail all the minimum steps they take on each tune to verify everything. He said if my Base Map from Fuel Moto was already pretty close he might be able to finish in 3 hours.

Just like some of the others I have heard to "watch out" for tuners who say they will finish it in 1 hour.

I of course am afraid I am about to pay $300 - $400 for nothing since everybody raves about the Fuel Moto stock Map. But my rear cylinder looked very lean when I removed my header the other day so I had to try it out.

Im certainly not an expert just passing on the info I got.

I will post my Dyno results when I get them back.



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This graph looks like a very nice tune job. For a relatively modest stock engine, your tuner did a nice job. He could have made it a little leaner down low if cruising fuel economy mattered but otherwise he did a good job with a simple engine configuration. The only other thing you might have requested is for him to give you a print out of the AFR for each cylinder just to make sure each cylinder was tuned properly. You can also ask him to expand the AFR chart to better see how close to 13.2 he's tuned the bike.

A little richer (12.9 - 13.1) above 5000rpms is good insurance and alittle leaner (13.5-14) below 3000 will help improve you cruising range if that matters to you. But otherwise he did a very good job with a stock engine.
 
I'm confused? You can tell by a wide open pull that it wasn't running leaner in a cruise throttle position? (fuel economy has no bearing on what you see on this graph) The graph you are looking at is for a wide open run, has nothing to do with any other throttle position other than 100%....
 
True, you can't tell if it's lean or rich for the entire cruising range, but since the cells build on one another its not out of the question that lean/rich in the upper load range is being impacted by lower load cells that are also running lean/rich . Certainly not definitive and without seeing a data run, there's no way to know for sure other than pulling a spark plug after a cruising run and shutdown or viewing lower load dyno runs.

I agree that without seeing a full data run it's really not possible to determine likely fuel economy. However if the bike is setup for 13.2 at all rpms and all loads then the fuel economy will be very poor.
 
My bike was tuned by Dave at JD's Cycleworks. Dave is one of (if not the) best tuners in the country, his reputation speaks for itself. I sat in his shop and watched him tune the 'Train (and pictures of that day are on his website). The full day's tuning ran $400. Remember, this is an '05. At the time I didn't have O2 sensors on the bike, so there was no V-Tuning on it.

He'll be tuning the Limited next month, we'll see how long that takes.
 
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