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Do you loose bottom end with open airbox?

Started by lwszabo, May 28, 2009, 05:40:01 AM

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lwszabo

May 28, 2009, 05:40:01 AM
I love the sound of my open airbox, But do you loose bottom end power with it?

ducpainter

#1
May 28, 2009, 05:46:22 AM
I believe you gain power throughout the range if the fuel is right.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
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    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


fouramdesigns

#2
May 28, 2009, 06:39:31 AM
I have the short DP box w/BMC filter. You do indeed gain power across the band, IF the fuel is right, which mine ATM is not.
But the sound and power surge is seat of the pants fo' sho'!
2001 Monster S4, Termignoni/ECU, DP short air box w/BMC filter, Rizoma Zero's front/back, Cookie tail chop, Rizoma belt covers, Evoluzione slave, CF all over

lwszabo

#3
May 28, 2009, 10:30:11 AM
Just curious, mine is tuned right....pulls hard!

ScottRNelson

#4
May 28, 2009, 11:01:15 AM
When I opened the airbox on my 1997 M900 and rejetted, it increased power everywhere.  I didn't exactly put the bike on a dyno, but compared its ability to get and keep the front wheel in the air at various engine speeds.  You could possibly attribute the added power to the jetting, but the important point is that it did not lose power anywhere with the open airbox.

I also did some experiments with different pipes - Gia.Ca.Moto carbon, totally stock, and lightly cored stock pipes.  Other than up above 7000 rpms I couldn't tell any difference in power at all.  But it sounded faster with the louder pipes.
Scott R. Nelson, 2001 XR650L, 2020 KTM 790 Adv R, Meridian, ID
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