Question about 2005 Suzuki GSX-R 600

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I have a 2005 GSXR-600 that starts up and idles perfectly. While it's sitting there you can rev it over 7000 rpm just fine. Once you start riding it tho it will bog down around 7000 rpm thru the gears. The only aftermarket part on it that I know of is a full Yosh tri oval exhaust. Could it need a power commander? Someone was telling me that the back pressure from the Yosh exhaust is different throwing the bike into a "limp" mode and not allowing it to rev higher. Oh, almost forgot to include that the red light on the cluster is on. Can anyone shed some light on this? Many thanks in advance!

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When i had a similar problem i couldnt go fast than 100 and that seemed to be the top speed.. and i could never get it close to redline only about 8500rpm max... so i had taken the carb bowls off to have a look at the jets and sure enough #1 jet had vibrated and fallen off into the bowl, it was just pouring out raw fuel and bogging it down, other than that, everything else worked great. but if you dont think its the jets and think that something else is wrong with your carbs in general, then purchase some Sea Foam and pour in 1/3 can to 2 gallons fuel and ride around for 10-15 miles and see if this wont restore all your power. it worked for me once! if none of this info works then it may just be the exhaust pipe. i have a old Hardine race pipe on mine and the baffles are old and wornout, i swear its straight pipe now.. but man it breathes really nice, and my old 87 cbr kicks everyones **** off the line at the track, even liter bikes,(except for R-1's). I myself cant believe it.. but i atribute it to my exhaust system and the performance spark advance gear that replaces the stock one in my pulse generator system.

Posted on May 14, 2010

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The only problem to your solution is that the bike in question is a fuel injected motorcycle. I am trying to fix the same exact problem on my friends gsxr. the only thing i can see happening to my friends bike is that the primary flaps work fine but the secondary butterflies are sticking a little. if this does not work then my second ave is to go to bigger injectors because the bike is starving for fuel. this bike has a k&n air filter and a d&d exhuast. if these two things do not work it most likely will need a power commander to remap the fuel system to dump more fuel for the added air and the release of air. But the second part to the problem is the FI light is on too. which i need to jumper the servo to stop that. so from her it is on you because one of those will fix your bike and the one i am working on.

Posted on Jun 20, 2010


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