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post #21 of 32 (permalink) Old May 17th, 2019, 5:12 pm
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the systems use 2 environmental sensors - air pressure and air temp. differences in elevation are taken into account via the air pressure sensor.
SP3 and Punch like this.

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post #22 of 32 (permalink) Old May 17th, 2019, 5:37 pm
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if you put pods direct onto the throttle bodies you do two things.

1/ you remove the bellmouth shape from the air entry.
2/ you shorten the air inlet.

both of these will hurt these motors power wise. the cali cycleworks big tank kit makes no difference to power or mixture ime, even though it does totally remove the airbox. but it does give you the convenience of a heap more fuel.

fitting a set of flash bellmouths from wasp or corse dynamics, etc, will make more power when they're in the ends of the original rubber tubes. but a typical pod straight on the throttle body won't.

i can't believe you think drilling holes that far from the air inlets is going to make any difference at all.

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post #23 of 32 (permalink) Old May 17th, 2019, 5:50 pm
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Well, there ya go. If it makes any difference it wonít be much. I contend you agreed with me even though you didnít want to. I didnít put the pods on, he did. I was just saying that since there were pods there already you werenít doing any harm letting a little cooler air in under the tank. May improve air circulation under there.

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post #24 of 32 (permalink) Old May 17th, 2019, 5:57 pm
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IF air temp goes down, and there is an air temperature sensor, then the ecu should try to compensate.

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post #25 of 32 (permalink) Old May 17th, 2019, 8:50 pm
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Originally Posted by duc96cr View Post
Well, there ya go. If it makes any difference it wonít be much. I contend you agreed with me even though you didnít want to. I didnít put the pods on, he did. I was just saying that since there were pods there already you werenít doing any harm letting a little cooler air in under the tank. May improve air circulation under there.
not sure what you're talking about (maybe i didn't read all the posts), but, sure. i was wondering if this was just a troll question to start with, especially after he said he has pods. holes up there ain't gunna make 3/8's of fuck all difference to air availability under the tank.

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post #26 of 32 (permalink) Old May 18th, 2019, 8:53 am
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It might help blow the hot air out from under the tank, but youíre probably ( Arrgh, gag) right.

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post #27 of 32 (permalink) Old May 19th, 2019, 4:35 am
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Quote:
Originally Posted by belter View Post
if you put pods direct onto the throttle bodies you do two things.

1/ you remove the bellmouth shape from the air entry.
2/ you shorten the air inlet.

both of these will hurt these motors power wise.
The link below uses an XR1200 to demonstrate that shorter air inlets increases peak power and longer inlet increases peak torque and shifts it toward lower RPMs.

XR1200 Intake - The Effect of Different Length Velocity Stacks

I thought split FCRs are popular among our race-spec bikes because of the overall shortened inlet tract + blue velocity stacks (short) which increases peak power, and racked FCRs maintain the long, OEM runner length thus providing more torque which is useful for road riding.

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post #28 of 32 (permalink) Old May 19th, 2019, 8:10 am
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i stand corrected.

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post #29 of 32 (permalink) Old May 19th, 2019, 3:47 pm
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Quote:
Originally Posted by samadhi View Post
The link below uses an XR1200 to demonstrate that shorter air inlets increases peak power and longer inlet increases peak torque and shifts it toward lower RPMs.
What this really shows, is we need dynamically variable inlet tract lengths!

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post #30 of 32 (permalink) Old May 19th, 2019, 3:56 pm
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Yamaha started doing this years ago.




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