Bad question to ask! I asked the same question about my engine and got an earfull. Look at the thread titled "Suggestions on improving performance on 115HP Johnny". It's about 8 threads below yours. Good luck!
First of all, we have to make sure you're getting everything out of it that is there.<br /><br />How many RPM's does it run at Wide Open Throttle (WOT)?<br /><br />In simple terms, there is NO bolt on majic.
