I would like to pass along your replies and knowledge to a friend who is a brand new Husky owner as of today. He just picked up a brand new 2009 TE450. The only thing done to the bike is removal of the throttle stop. Only after 50 miles, I noticed the headpipe is turning blue. He let me ride the bike, and I understand its "breaking in" but it does seem to be a bit constricted on takeoffs and slower speeds. Sort of like you need to give it a little extra throttle on takeoff. We've talked about him going ahead and trying removing the cat insert from the exhaust and switching the bike over to the performance mode when plugging in the unit provided with the bike to reprogram the EFI, etc. We've not gone there yet. The question is will the bike be easier to ride once its been de-restricted and remapped?, meaning smoother takeoffs and will the motor run a lot better? Details would be appreciated so he can decide to do this or not or how it might benefit or hurt him as a new/novice rider? i.e. he does not want to mess with it if it will make the bike actually harder to control in slower technical trails, or less predictable power delivery, etc. Thanks in advance for your replies.
They take a good 600 miles or so just to loosen up. Nevermind the gains made when you THEN PU and ibeat it.
How about the "Blue" header pipe situation. Would sure hate to see him run it too long like this and burn up the motor - perhaps they run them super lean to get them to pass emissions, thus the PU kit? The PU kit does richen it up and change the timing, correct?
Usually they run rich in stock mode, not lean. The 2009s were much better than the 2008s, but still a bit rich. How much experience do you have with bikes? The only reason I ask is because every bike I've owned has had the header turn blue... and glow red in a garage when idling with the lights off. While the General forum is not a bad place for this question, it really is an efi question, and you may get even more responses in there. I'll move it over and see if others can give more help.
I'd start with taking the cat out of the exhaust so at least the bike can breath properly. For break in you can leave the O2 sensor in the exhaust and the ECU will calibrate itself to the engine requirements the more you ride it. Once the bike has a good few hours on it then you can remove the O2 sensor and install the resistor plug on the loom but you will probably need access to the Ibeat software to fine tune the fuelling once you do this. The 450 is quite a potent animal for a novice rider, you can make the delivery more controllable by fitting a G2 throttle tube. Search on here or Google 'G2 Ergo' to find the manufacturer. Dave
The OP is asking about a stock bike except for the throttle stop. That is, the O2 sensor still in place. That makes it run too lean. If the O2 delete is installed, then I would agree that they usually run rich.
Read my post on using the long term adaptation table to set FB1 FB2 FB3 when working with the o2 sensor. Might want to start near the end when most of the questions were resolved. MAT
Thanks Guys! Appreciate all the replies so far. I'm just getting to know this Husky, helping a friend. He's reading up on this like crazy too. My experience is with carb'd bikes mostly. I have a 2008 Beta 450RS so I have nothing to compare to here as a baseline really, and this site is a big help. I'm working with him ground zero on this, hoping to do the right things in the right order - not hurting anything is the hope. I have ridden the bike, and rode one that was dialed in last November. I felt a big difference and don't want to go crazy uncorking the thing but fear its not running like it could, so we'll look at the Cat and electro-plug-in-thinga-ma-bob next. We'll see how that goes and I'll check back on this thread again. I aslo felt he needs to get that 47 rear tooth off of there and go to a 50T for trail riding. Just seems too tall in 1st gear as-is for single track trails, etc.
