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Spent the day tuning and testing a car I resto-modded and I can honestly say you can't hear a 100PPM HC variation or at least you can't say "hey I can tell im off by 100PPM!" So this tool combined with my laptop makes all the difference. Because Im in the ball park now and the car runs fantastic I can dyno it and make sure Im getting the most out of it safely.
Im going to give my RK a sniff to see how well the Fuelpak is doing.
1. There isn't any real calibration spec between dynos. I've seen 10% difference between 2 Dynojet 250 dynos with 2 bikes run 1 day apart.
2. The dyno tune is only as good as the operator. While there are a few real good ones that pop in here, I suspect the better tuners are only a part of the whole population.
3. Sure people can tune their own bikes if willing to spend the time to do it.. I also suspect that the number of guys that tune are way less per capita than the of dyno tuners are for their capita.
4. If the dyno is in good condition and operating correctly without too much atmospheric changes, it is a good tool for tuning.. Numbers can be reasonably consistent on the same dyno.
5. Dynos are no replacement for track tuning but they do get you close.
Some tuners are dyno's within them selves and are called auto tuners that don't require mapping, or external fine tuning.
This contributes equally & proportionally to the heart of this thread.
Will now let this thread run its course, appreciate all your comments.
B Bop
2012 FLHR (Road King) Ember Red Sunglo & Merlo (stage II) Cruise Control, ABS, Chrome Aluminum Profile Laced Spoke Tubeless Wheels, Security Package, Saddle Bag LED Lid Spoilers, and an array of accessories that enhances nostalgic appearance & blood curdling performance.
To steal ideas from one person is plagiarism; to steal from many is research.
I get what you are saying, but for me, My Power Vision's auto tune only did just so much. (stage one then TW-222 cams, lifters, pushrods and inner bearings. All parts from Fuel Moto) After I brought my Bike to Dyno Solutions, John did a few pull to establish a baseline. Then he made a few changes to my tune, while making a few more runs. In the end he showed me my old AFR's were a bit off. The cost? about $250 (I can't remember, but not any more) The result? My bike pulls strong and even with no flat spots. To me this was the best money I've spent on my bike.
As the Black Moon eclipse on August 21 is only 3 days away, can this possibly be the cause of radical behavers lol...
Soooo much sensitivity, it's amazing!
Please continue, if anything it has become very entertaining to read, at least I'm enjoying it anyhow...
B Bop
2012 FLHR (Road King) Ember Red Sunglo & Merlo (stage II) Cruise Control, ABS, Chrome Aluminum Profile Laced Spoke Tubeless Wheels, Security Package, Saddle Bag LED Lid Spoilers, and an array of accessories that enhances nostalgic appearance & blood curdling performance.
A politician is a fellow who will lay down your life for his country.
After I completed my 107" build which included a new cam, larger valves and ported heads I dropped the bike off for a dyno tune at the shop my head builder recommended. The shop owner asked what I was hoping to achieve with the tune. I told him I wanted a clean running bike with a nice safe/cool running tune. He then asked if was chasing HP numbers, I said "nope, I don't even care to have the dyno sheets or know the numbers".
Later that day I picked up a perfect running bike that has never given me an ounce of problems for the past 3 years. It has an very linear pull from 2000rpm on up with no flat spots. The shop owner loved the build especially the head/cam combo and asked me a bunch of specifics. I never asked about the numbers or got the dyno sheets.
I agree 100% about the numbers. Who cares what the actual numbers are? It's all about getting the most out of it and making it run properly. Are the lines on the chart smooth? That's what matters. The last two times my bikes have been on the dyno, I didn't even ask for the sheet. I trust the guy and don't care what the numbers are. It runs great.
FYI - the dyno has an adjustable brake to compensate for the drag coefficient of the bike. The owner of the shop explained it to me after asking if I ride with or with out the windshield on my Road King so he could adjust the brake properly. He knows the settings for each different model of bike. Of course he could have been bowing smoke up my butt. And anytime I have seen him tuning, he is sitting on the bike when he makes the runs.
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goes great with kool-aid