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Originally Posted by johncruise
1) by exhaust mods, that includes changing the muffler? (not just punching holes--- changing the muffler like that EMGO turnout muffler)
2) with the lean air/fuel ratio problem -- can we fix that by using a different octane gas for faster burning and or messing with the idle screw below the tank.
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Better to ask BEFORE than to say "What happened?" after! :roll:
Good answer from J.
To add just a bit:
If you are installing a "real" muffler, you will probably be OK. Before you put it on, hold one end toward a light bulb (turned ON, of course) and look in the other end. If the hole looks black (no light coming through), you should be OK. If you can see a hint of light coming through, you might need carb adjustments; might not either. If you can actually SEE the light bulb, meaning there are no baffles and it is not really a muffler, then it is likely you will need a carb adjustment (and IMHO, you probably won't like the sound either!).
If you are going to have to do any welding or cutting to fit the new ones on, you should consider the possible effect carefully because going back can be difficult and expensive.
The octane rating of gas does NOT have any significant impact on the mixture.
Good luck!
