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Re:45mm throttle body and intake manifold?
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TOPIC: Re:45mm throttle body and intake manifold?
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KitsapRider (User)
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45mm throttle body and intake manifold? 5 Months ago  
Not sure what sub forum this should go in so forgive if its not.

Found a 45mm performance throttle body and high flow intake manifold on eBay. These are supposedly the speedstar parts offered together and for the fuel injected bikes. My question is, would these parts actually make any difference in conjunction with my cobra 2-1 and k&n intake?
I thought I read that one of the stages (2 or 3?) added a fuel processor. I run the stock ecu of course and know that these bikes run well without the aftermarket processor. So would these parts actually make any performance gains without any other upgrades to ignition or fuel mapping?
Thanks in advance for the advice
 
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Re:45mm throttle body and intake manifold? 5 Months ago  
I tried that combo on my 2012. Didn't run correctly because it needs to be remapped. I wanted to be able to make it work but never did. Still have the intake and throttle body. I'll sell it to ya cheap if you want to give it a go.

Aftermarket fuel controllers have never worked correctly on the FI Roadie. Not sure why. It would take someone with a lot of knowledge to make it happen.

Just know that you can't just bolt these on and have more power. Been there, done that
 
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Re:45mm throttle body and intake manifold? 5 Months ago  
I thought as much. Even though we don't know how, Yamaha must have had a way to make the different kits work since they were installing them on our bikes. Sometimes I envy the carb guys, seems easier to make more power and they get better gas mileage. I get like 36mpg. Has anybody ever gotten the big bore kits on a FI bike? I imagine you would need a controller as well
 
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davej (User)
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Re:45mm throttle body and intake manifold? 5 Months ago  
There is no reason to have a 45mm throttle body on a stock motor.
 
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texasscott1 (User)
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Re:45mm throttle body and intake manifold? 5 Months ago  
For those to work you'll also need the higher capacity fuel injectors that were being offered back then.
 
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#1014552
BikerRon (User)
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Re:45mm throttle body and intake manifold? 5 Months ago  
They're just trying to dump the overstock of what's left on the unknowing.

$$$ is the bottom line.
 
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Last Edit: 2017/06/18 17:27 By BikerRon.
 



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