Needle shim modification

emory70 · 08-14-2010, 05:41 PM

i could see having some type of system like that to make a car with a very narrow powerband easier to drive in the real world. but it's a crutch, not a power maker. they would need that extra scavenging cause the engine is out of its happy place.

maybe most or all people here that have changed the muffler and/or air filter on their bikes have then lost some mileage after retuning the carb. how did they tune it? on a chassis dyno? how else are you gonna REALLY tune the engine?

08-14-2010, 05:41 PM	#28
emory70 Senior Member Join Date: Jul 2010 Location: jacksonville fl Posts: 100	Re: Needle shim modification i could see having some type of system like that to make a car with a very narrow powerband easier to drive in the real world. but it's a crutch, not a power maker. they would need that extra scavenging cause the engine is out of its happy place. maybe most or all people here that have changed the muffler and/or air filter on their bikes have then lost some mileage after retuning the carb. how did they tune it? on a chassis dyno? how else are you gonna REALLY tune the engine? __________________ STGMTT
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