#31
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But How Do I Know If I've Got Enough Timing?
Heh. Oh boy. Ready to pay for a tune yet? The AKR will tell you when you've got too much timing. Nothing tells you when you don't have enough. You've got to go through and add timing, then do a data run to see if the AKR kicks in. Anecdotally I can tell you that you want to substantially increase timing in the idle range to keep the bike cooler. You also want more than the base calibration gives you at low rpm/low kPa settings. At some point you'll reach diminishing returns. Make sure the AKR isn't kicking in. Resign yourself to the fact that you're not going to be able to get it much closer without either alienating your friends and family and losing your job. Or paying for a dyno tune. Timing's Done! VEs Are Done! I've Adjusted Everything I Want to Adjust! Now What? Are you sure? Got your throttle control where you want it? Got your Decel Enleanment set just so? Create yourself a new tuning map and do one last monster V-Tune run. Run V-Tune and compare the results to your final map. Manually change (transfer the VEs to your existing map, don't create a new one) anything that sticks out like a sore thumb. If the VEs changed much (they shouldn't have), do another data run to look at timing. Assuming all's well.... Congratulations, you've just tuned your bike! I've spent the better part of 4 months working on and off on this. My VEs are beautiful. With the exception of that horrific detonation event in my front cylinder around 2750rpm, my timing is sublime. But I've spent 4 months at this, when Dave spent 6 hours doing the Fatcat tune. Yes, you can tune your bike yourself assuming you have the time and decent roads to work with. At some point I'll take the bike up to Bethlehem to see how I did, and what Dave can improve (and, of course, 'cause I love me some Dave, J, and Alex). But what this process has really taught me is how talented the top-tier tuners really are that can get better results in a matter of hours.
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You might be a king or a lowly street sweeper, but sooner or later you dance with the reaper. Make Doof Clenas Fun Again (MDCFA) |
#32
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It really isn't that hard. It takes a certain amount of meticulousness and absolute adherence to the order in which things have to be done. And notes. Lots and lots of notes. It also helps that there are a lot of very talented people out there who are generous with their time when it comes to answering questions. I simply can't say enough what a huge help Smart Dave's been. Additionally, I've picked Steve Cole's brain and Jamie Long's. The really cool thing is feeling how well the bike can run with just a simple Stage 1.
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You might be a king or a lowly street sweeper, but sooner or later you dance with the reaper. Make Doof Clenas Fun Again (MDCFA) |
#33
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That "MyTune" program Warren mentioned is automatic and somehow, IIRC, incorporates some kind of algorithm to pull only a small amount of timing where knock occurs (vs. pulling what the ECM does by default in the AKR table). Last edited by RKotter; 08-10-2011 at 07:57 PM. |
#34
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I'll get to ignition when I'm done with the fuel. My Tune.....enter current ignition tables, load DM2 or DM3 file and generate new ignition tables with timing pulled if knock is logged in the Data File. Advance all other cells, repeat and rinse. |
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Good write up Russ.
A question: In your opinion are you getting just as good of a calibration with the narrow band O2's after this process, as you would with a wide band capable system? Just curious.
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<'))))))>< Greg |
#36
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The systems that advertise WEGO systems aren't using real WEGOs. A real WEGO costs big, big bucks. What the Thundermax and Dynojet systems are using is a wider band sensor than the factory units, but they don't switch nearly as fast. They're not true widebands. Judging from the results that Dave got on the dyno, and what I'm able to replicate utilizing V-Tune, there's not a real gulf between what's possible with WEGOs and what's possible with the current narrow-band sensors. That would probably not hold true if we were using a Mass Air fuel injection system.
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You might be a king or a lowly street sweeper, but sooner or later you dance with the reaper. Make Doof Clenas Fun Again (MDCFA) |
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<'))))))>< Greg |
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You might be a king or a lowly street sweeper, but sooner or later you dance with the reaper. Make Doof Clenas Fun Again (MDCFA) |
#39
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Increasing the timing at idle makes for a smoother idling motor. I advanced mine and now it's almost softailish at idle. Russ, this is a great starter kit of instructions for anybody wishing to tune their bike themselves. You've put it together much more eloquently and entertaining than I ever could have. There are a few things I do that I think help a lot.
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------------------------------------------------ I know you think you understood what I said, but I'm not sure you realize that what you heard is not what I meant." [
Last edited by Infidel!; 08-13-2011 at 11:38 AM. |
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And I'm still playing around with things as well. The big thing, as I mentioned and Danny reinforces, is to shut off anything that's adding or subtracting fuel when VTuning (that means PE, AE, DE). As long as the bike's warmed up, you don't need to worry about Warmup Enrichment.
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You might be a king or a lowly street sweeper, but sooner or later you dance with the reaper. Make Doof Clenas Fun Again (MDCFA) |
#41
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What Russ has written here has pushed him into his 4th year apprenticeship. Nice write up. Don't do anything dumb like getting a job at a dealer.
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On this lonely road, trying to make it home, doing it by my lonesome-pissed off, who wants some? "The right of the people to keep and bear arms." "Gimme back, gimme back my bullets" |
#42
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wax on wax off
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BAAAA BAAA BAAA "Blame Russ in 2012" "Can We Still Blame Russ in 2013" who's to blame in 2014? OH THIS IS SO NOODLES FAULT Chitty Chitty |
#43
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#44
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When I get the wires, I'll hook it up just to read the data.
I'll let a pro mess w/any tweeking. The only (lil) thing I noticed is in the very warm too hot weather. Accelerating, 2nd, 3rd an may 4th. It'd pop. Now, on the cooler days. No popping. Since it ain't broke, I'll just read Russ's tutorials BTW, usually 40-44 mpg's. Don't do much hot dogging.
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Doofbag Fer EverI smell Fish |
#45
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Anything over 40 MPG is great. Most popping is annoying, but not detrimental
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------------------------------------------------ I know you think you understood what I said, but I'm not sure you realize that what you heard is not what I meant." [
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