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FJR Motorcycle Forums
Technical & Mechanical Problems
Wicked Webby Air Box Mod Warning
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<blockquote data-quote="UselessPickles" data-source="post: 709244" data-attributes="member: 3256"><p>If you've been following this thread, then you would've seen the reference to the thread where Wicked Webby put his bike on a dyno, comparing the modified air box to the stock air box. There was clearly a significant power gain (~10% the mid-range). There is no question as to whether this mod gains power. It's already been proven. That is not the topic of this thread.</p><p></p><p>The point of this thread is that I repeated Wicked Webby's modification and something went wrong. I understand that Webby and another person have not had any problems, but this is evidence that this particular technique for creating the necessary custom air filters pushes the integrity of the air filter material near its limits (in my case, past its limits). Either I flattened my filters differently, or my filter material was a bit weaker (but probably well within tolerances for its intended use), or a combination of both. Is that a risk you are willing to take? Everyone can decide for themselves. Personally, I would not perform this mod again without a much sturdier and pleated air filter. I've removed and reinstalled the air box on my bike enough times now, so it's unlikely that I'll ever modify it heavily again.</p><p></p><p>BTW - the power gain is from greatly enlarging the size of the intake into the air box. You are correct that simply flattening an air filter without any other changes would not be expected to result in power gains.</p></blockquote><p></p>
[QUOTE="UselessPickles, post: 709244, member: 3256"] If you've been following this thread, then you would've seen the reference to the thread where Wicked Webby put his bike on a dyno, comparing the modified air box to the stock air box. There was clearly a significant power gain (~10% the mid-range). There is no question as to whether this mod gains power. It's already been proven. That is not the topic of this thread. The point of this thread is that I repeated Wicked Webby's modification and something went wrong. I understand that Webby and another person have not had any problems, but this is evidence that this particular technique for creating the necessary custom air filters pushes the integrity of the air filter material near its limits (in my case, past its limits). Either I flattened my filters differently, or my filter material was a bit weaker (but probably well within tolerances for its intended use), or a combination of both. Is that a risk you are willing to take? Everyone can decide for themselves. Personally, I would not perform this mod again without a much sturdier and pleated air filter. I've removed and reinstalled the air box on my bike enough times now, so it's unlikely that I'll ever modify it heavily again. BTW - the power gain is from greatly enlarging the size of the intake into the air box. You are correct that simply flattening an air filter without any other changes would not be expected to result in power gains. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Wicked Webby Air Box Mod Warning
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