I don't believe that is correct.
At low RPM's your secondary throttle plates and ports are not flowing much air because the motor can not injest all that. Only the primary is open and flowing.....keeps intake velocity up and low end driveability good. If you started injecting with the secondaries that early, then you would run rich until the secondary plates opened and the flow picked up.
-John

 

Where do you get the reltek ECU?

 

www.digitaltuning.com

 

Danke sehr

 

My info is directly from digital tuning's site...I've got the 1.5 and I wanted to make sure I understood everything before I bought it I'm upgrading to 1.7 as we speak...

"Version 1.5
Still a simple chip swap. It has almost all the features of 1.0 (no flood clear), but adds fuel and timing 'help'. This will allow engines with mild modifications to safely run without the need of an SAFC. One of the limitations of the stock ECU is that it will not enable the secondary injectors below ~3800rpm. With even mild mods, airflow below 3800rpm can be increased to the point where the primary injectors are maxed. Version 1.5 better balances the secondary staging point to be as low as possible for a stock injection setup. Set the point too low and it will run lean up high, too high and you get the original problem of maxing out the primary injectors down low before the secondaries come on. The better balance minimizes the lean spot that can occur around 3800rpm on a vehicles running higher than stock boost and the stock ECU."