I'm looking to change from stock to black Big Radius 2into2 on a 07 FXSTB and am curious as to what is all required to complete the upgrade.&nbsp\\; I've been told that I need to remap the thing once the changes are made while others have said to just put on the new parts and your set.&nbsp\\; I had 1 guy tell me that his dealership told him that he should not use the O2 sensors on his upgrade.&nbsp\\; He did have a Power Commander installed at the same time so maybe that was why.

I will do the Big Radius 2into2, new air kit and I think I'm convinced on the XiED to lower the heat.&nbsp\\;

Any comments are appreciated.

 

Do those things then take it for a ride, if you start getting alot of popping when letting off the throttle then you should get a fuel management system (i.e. PCIII, SERT, Fuel Pak).

 

A buddy of mine just brought home 2008 Heritage Softail with the BR 2into2 and Stage 1 and he doesnt have any popping.

 

No two HD motors are alike, some people don't need it some do... nature of the beast...hope this helps!

 

If you do this you will need to re-map or install some sort of fuel management system.&nbsp\\; The new 96" motors are running pretty lean as it is.&nbsp\\; You may not experience any popping but you could be taking life away from the motor.

 

Don't overheat your engine by running it too lean.&nbsp\\; If you add the SE airbox you must richen up the fuel or you will do damage to your engine over time.&nbsp\\; The XIEDs and the O2 sensors are only in the circuit up to 40% throttle, so the rest of the time you will be running real lean.&nbsp\\; The least inexpensive route is the HD Stage 1 download which will cost you about $175.&nbsp\\; The next would be to install the V&amp\\;H Fuelpak for about $219.&nbsp\\; The third option would be the PowerCommander which will set you back about $279.&nbsp\\; If you are going to buy an expensive bike and put expensive pipes on it, I would not suggest screwing up the engine by skimping on a fuel managment system.&nbsp\\; Your call.

 

What you just described is closed-loop operation, using the O2 sensors. But in open-loop (i.e., the rest of the time), the AFR is commanded to 12.0 (which is plenty rich... and safe). Bottom line, XiEDs are all that is needed unless you have done internal engine mods.

Ref: http://www.nightrider.com/biketech/hd2007HD_heat_00.htm