Service Advisory for all RDD CDI customers. Nothing is more upsetting for me that to see people investing in a really good product and not exploiting it to the max. Guys who install the unit an do not set the timing are at the top of the list of people who piss me off. Because what you land up with is going to perform worse than the stock static CDI. Its a lot like Flat slides vs round slides. No point buying flat slides if you just bolt them on and expect them to work. They are going to work worse than the stock round slides. So first thing is set the timing. The next thing is to understand that when we say set max advance to +4 Deg this is the bare min. You should do. And after this. No matter what the state of the engine. Your mileage and power will increase. But here is the interesting bit. Its just the start. If you really want to exploit it to the max you need to find the optimum advance for your engine. i.e. just how much your max advance should be. I can not recommend more than 24 because some poor clueless guy will blow up his engine. But its not un common for me to tune builds with upto 30 deg. On some builds I go as low as 16 deg. So how do you decide what is the best setting. It depends on the following factors. a. What is your elevation. If you are at sea level. You want to be careful. But say your in Bangalore. At 3000 Ft. You can very very easily run +6 Deg. The higher you go the more the timing you can run. As a rule of thumb you can take at least 1 deg per 1000 ft of elevation. b. What is the condition of your engine. Since your no engine expert. And even I cant tell by looking at your engine. Without opening it up. We go on the basis of simple compression here. If your compression is stock then the +4 Deg works. And is safe. But if your compression is low then you must add on more timing. If your compression is high then you must not add on more. What is high and low. Anything under 120 PSI is low. Anything over 150 PSI is high. A compression gauge only costs like 800 bucks buy one. c. Lastly quality of fuel you run. If you run really good gas. You can run more advance and make more power. Without the worry off detonation. If you run crappy gas then you cant run more timing. As a rule of thump. I take .5 deg for each octane point. So if we assume 91 is normal. And you can get 97 that means you can run at least 3 deg more. The only thing you need to keep in mind is that as you increase the timing. you must also increase the fueling. When you start to increase the max advance. Also take the needle clip up. I normally take it to full rich before I start advancing the timing. How do you tell if you have advanced the timing too much. a. The engine kicks back. b. The bike accelerates harder and feels like its making more power on curve 2 vs curve 1. Do not make these common mistakes when tuning. a. Smooth is better. No smooth just means your timing is backed off too much. b. Do not test in first or 2nd gear. Check acceleration in top gear. Check your top speed in top gear. To see what gives you the best acceleration and top speed. c. Keep a close eye on your plugs. After each run look for any aluminum balls forming on the plug. Check to make sure plugs are not white. If they are white add more fuel. If you see metal back off the timing. Enjoy playing with your new toy. And setting it up to exploit it to the max.
Posted on: Tue, 08 Apr 2014 12:16:08 +0000
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