by fivebob » Thu Aug 06, 2009 7:17 pm
Most aftermarket ECUs don't support, or have very limited support for closed loop operation.
Even if it does support closed loop in most cases it's not worth running a wideband sensor because they have a very limited life (same applies to datalogging), and narrowband is only good around stoich, so it's only usefull around idle or very low load.