The Factory Pipe instructions say that the 3/8" hose from the filter/solenoid assembly (remember, the solenoid is *supposed* to be mounted to the filter assembly) is a tuned length and can't be changed. I have never seen one run like this (other than my GSX when I raced it the first time). Everybody mounts the solenoids as close to the spraybar so that you get the spray immediately, and don't have to wait for the long 3/8" 'tuned' hose to fill up and then for it to drain when the water shuts off...
EVERY racer runs their Spec2 like that. Even Bill O states that's how he has always run them, and for that exact same reason.
I can't speak for ECWI on a Spec1 pipe, but I would 'assume' it would be the same or close to it.
I wish I could find another R&D cable trim for my race boat, just to empty out the hull some more. *sigh*
-Scotty