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Showing results for tags 'syncpro'.
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We've talked a lot about the SyncPro ('[ame=http://www.venturerider.org/forum/showthread.php?t=33618]Carbtune versus Motion Pro SyncPro[/ame]' and '[ame=http://www.venturerider.org/forum/showthread.php?t=38304]Carbtune/SyncPro vs 4 seperate vacuum guages[/ame]' [sic] being two recent conversations). I bought the SyncPro and took it with me when I visited V7Goose yesterday for carb work. I wanted his considered opinion. Yesterday was filled with surprises. First it was the roofing screw, then it was meeting lobo17 (he came to see the carb work), but one of the more interesting surprises was how the SyncPro "works". Goose did not like it on reputation, and liked it less on sight. Goose was determined to prove the SyncPro to be junk. To be sure, there is much to dislike about it. It seems cheap. You have to calibrate it each time. But it was reputed to work, so he wanted to see how well it did. Look at the photos. Goose hooked it up to a hand-held vacuum pump. The first shows the SyncPro calibrated at 5 inHg. The second shows that it goes out of calibration at 10 inHg, and is clearly wacked at 15 inHg. When he returned it to 5 inHg, it was out of calibration and fragmented too. It would seem that blipping the carb would send the SyncPro out of calibration. For fun, I am including a photo of Goose's tool. There is no doubt it is quality. You can also see him in action. He uses his laptop to monitor the RPMs. That's pretty cool. Well, he disliked the SyncPro before I left Houston, but how did it do? As I [ame=http://www.venturerider.org/forum/showpost.php?p=364594&postcount=9]admitted earlier[/ame], I bungled the repairs to it, so I expected the sync to be off. But it was surprisingly good. 1 & 2 were sync'd OK, and 3 & 4 were sync'd OK, but left & right were not sync'd together properly. I had problems getting L/R to come together, and it turned out that while not horrible, they weren't that close either. When Goose got L/R together, the RPMs surged like crazy. Clearly, my bike was running better. Maybe if I hadn't reversed hoses, I could have gotten nearly decent results. So, why did the SyncPro work as well as it did? Looking at Goose's vacuum pump test, you would think it shouldn't. I think it was because you calibrate at idle, which gives you a given vacuum. And that's the vacuum you sync to, give or take. What's worrying is that you lose the calibration when you blip the throttle (change the vacuum). In short, I don't think I can recommend the SyncPro. I don't think the pluses outweigh the minuses, and I am not convinced it will do the job. I want to take the opportunity to thank Goose for being so generous with his time, talent, and coffee. My bike runs like a top as a result. Thanks Goose! Dave
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I am trying to calibrate my new SyncPro Carburetor Tuner. I checked the idle, it is at 1000rpm. I attached the short hose to Cylinder 1 -- which I believe is the rear cylinder on the left side, and normally wears the cap instead of the tube. See picture. When I start the bike to calibrate, the leftmost column rises all the way up and past the scale. The other tubes are also very high, but don't get sucked into the engine. It seems the engine has too much vacuum. What should I do? Should all the other vacuum tubes and caps still be attached? Should I reduce idle? I'm getting frusty, Dave
