Markhat250... i'd say your HS needle setting depends on your pipe here in AZ. I'd been running about 220 slightly leaner than flush with the 2050. I put the 2013 on and had to lean it out about 9 hrs! Tuned at SRS today, because it'll be the exact same weather on saturday...that way i can sleep for a couple hours after i get off work and i had to get a bit leaner on the top end... so it really depends on the pipe, the weather, your fuel, etc etc. i came off the track at 219 again... last week, i came off a bit warmer. I'll take a look at your setup on saturday... I won't be racing against you The other novice guys with B5's might not be so lucky LOL

By the way, thanks to everyone on this thread for all the pipe data here for the B5. I didn't think there was that much pop with the 2013 at first, but now that i got it tuned, SO MUCH LOW END! $@e#%@! i tell you what...i have enough poop to triple with a 2ft. run up at 1/2 throttle... i could probably put it over the fence and land on the on-road track if i was silly enough to try. Today i made a quad out of a double-double, and still overshot the downside of the last double!!! I doubt any nitro engine will ever match brushless in the high speed department, but a 2013 on a B5 is almost as snappy on the low end

Happy Thanksgiving, everyone