injector duty cycles

[Mazda Ebrahimi]

> I find that at WOT my injectors go greater than 99% duty cycle for most of the
> time. The ECM is a GM SFI unit (Buick Grand National). This high duty cycle is
> common at WOT. The ECM does send out a token closing "blip" that keeps things in
> true SFI mode; essentially the injectors are just serving as holes in the fuel
> rail at WOT.
> 
> Todd    Todd_King at ccm.co.intel.com

Thanks for the info. Is this a stock engine? Are the injectors peak and hold type?