Well...I have had a full and exciting weekend! I did manage to get over to Honda of Houston over the weekend. (THANKS to Josh and Glenn in the service department!) They are all super nice and efficent guys there, and the place is very MX oriented, they have a nice selection of goodies and I picked up a new 756 front tire (ahhhhhh wonderful) and a new jersey and gloves too. I think damn near every single guy in the parts and service dept. rides an MX bike!! I WILL be buying my next bike from them too...it is refreshing to see a dealership that does not treat dirt bikes like an afterthought...kudos to Honda of Houston! We did run my bike on the dyno with stock and TA pipes, as well as making some major jetting changes that were rather surprising! I need some time to organize the results and scan the printouts so I can post a pic of them. Let's just say the results surprised even me, a well known Thunder Alley afficionado. I still stick by my initial "seat of the pants" review and I DO recommend this pipe if you like short shifting and massive low end boost. Example...there is a jump at Splendora where you can take the inside line and power out in second gear and still make the full stepdown, then there is a decent acceleration straightaway where you hit 4th gear for a niiiiice and fun looong stepdown. I was shifting from 2nd to 4th IN THE AIR and whacking the throttle on the landing and never had to touch the clutch, and the bike pulled like a madman. Shifting to 5th in the air then and landing for the next run at a triple was beautiful, the motor pulls the tall gear easily and was faster then revving out 4th. HINT: at 4000 rpm the TA is making SIX, yes 6hp MORE than the stock silencer. It loses a little to the stocker in the upper midrange by about 1-1.5hp though and then goes on to beat the stock on top end, but not by much. We did not have time to compare torque curves (bummer) and I will say even though the stocker had a better midrange from 5000rpm to 7000rpm, I am willing to bet the TA is making more torque than the stocker. HP is nothing without torque as we all know. The 2 size larger 175 mainjet was WAY to rich for the 94f temps and 49% humidity we had here saturday. After a moderate bottom end it hit the midrange and DIED...losses of 3-5 hp across the board from about 6800rpm on up as compared to the 168 and 170 mains. We ended up back at the stock 170 and that is what I ran at Splendora today. I tried a 168 even, and while it ran better than any other combo on top, it was suffering from massive power drops on the low end in the order of 5hp. The 170 provided the BEST low end punch of ALL the jets from 168 to 175 and was almost identical to the 168 main performance on the top end. Of course as the weather gets drier and cooler I will need to richen up but for this weekend the bike was running CRISP and started VERY easily as compared to the 175. I WILL be posting the printouts tomorrow after I scan them, and looking forward to one more dyno session with a couple of changes. I am running my air filter WITHOUT the 2-layer screen... I also rode at Splendora with some of the HHR guys and let me tell you what, some of 'em are rather fast The track is awesome, very flowing with lots of 3rd and 4th gear jumps and turns. Nice sand with a clay base makes some decent berms and gas consumption goes through the roof because you can nail it everywhere!