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post #61 of (permalink) Old 05-20-2009, 06:35 PM
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So I am about to do this mod since the damn FI light has been on for weeks. Seems like most of you have been happy with the results. Has any one noticed any difference in the low end torque after the mod? The service manual states this is the purpose of the valve. I know most of us agree its for passing sound tests...however being an engineer it makes sense you would loose some low end torque with the difference in back pressure. Just wondered if it was even noticeable? Or if noticeable the added throttle response made up for the difference in low end torque that that was lost that you just don't care about it?

I will let you know how it goes once i get mine done. Figure it can't hurt since the dealer wants to replace the motor saying it will take two hours of work at $75/half hour plus the cost of the motor. Figure a free mod is well worth a try.

2007 GSXR 750, metzeler z6
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