k7 gsxr600 Acceleration problems
I just finished modding my new bike, I installed a Two Bros. slip on exhaust, and K&N Air Filter and a power commander with the correct mapping system. Everything was going great until my last oil change, I put a new filter on from suzuki, and switched to synthetic oil. Still 10W40, since the oil change I noticed a wierd top end on my bike. The RPM's were going up as I opened the throttle but no gas was going to the engine, it slowly got worse to the point where I couldnt go over 70 mph at 12000 RPM's in 5th-6th gears. Then it bottomed out to where I couldnt go over 25 mph in any gear. I had to coast it into my driveway and the Power Commander is working properly, the oil level is good and so is the oil pressure. My question is, could this be a spark plug problem? I've put 7200 miles on the bike in 6 months. So i'm just wondering. Any technical help would be greatly appreciated. Thanks.