Hi, I am new to this posting and new to dirt biking. I bought a TTR-125L about 2 months ago and I am ready for a little more power but not too loud an exhaust. I have read on www.tt125l.com about the different exhaust mods and from the Dyno chart it seems the Engines Only exhaust gives more power than the FMF or the Pro Circuit. I was wondering if anyone of you have used the Engines Only exhaust and what you think about it. Any comments will be appreciated. Thanks.