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i have a 02 954RR. has anyone removed the HTEV (honda titanium exhaust vavle) and/or the flapper inside the airbox? what are the gains of doing this if any?
 

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if you use the search thingy on the tool bar you'll find loadsa stuff on both those mods already :thumb:
 

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i have a 02 954RR. has anyone removed the HTEV (honda titanium exhaust vavle) and/or the flapper inside the airbox? what are the gains of doing this if any?
Better reliability is all.
The flapper is wide open above 8000rpm anyway so removing it has zero effect.
The HTEV is also open above 8000rpm so removing it isn't going to increase flow in the topend.
You do lose midrange though.
 
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