I don't have a clue either, but maybe a skilled tuner would know to use 1 ms as a starting point for a high impedance injector anyway. Also, if you have a shop, finding it out yourself really isn't that hard.

Sometimes I consider sending my injectors to some place like Yaw Power. Cost is $50 per injector and this will include sonic clean as well as new screens, pintle caps, and o-rings. New injectors are $35 as they don't require reconditioning. Sample data from Yawpower

But to be honest I really don't think it's worth it, it's just my odd way of adding bling. On the other hand, that cleaning and reconditioning is likely a good thing.

Rat Patrol wrote on 01/06/11 at 12:26:52:

Almost anything can be found on the Internet if you search enough. Armed with that knowledge I invested a frigging ludicrous amount of time googling for it, more than even reasonable as it became a sport. But I never found it. Some day I'll send my injectors for cleaning, not because I think they need it but because I'll pick a shop that can do this voltage->flow baselining. If/when that happens I promise I'll post it here. I hope anyone beating me to it would too.

Edit: The IW031 is also called WFI191, and I've also seen a reference to "EV-1 “Minitimer”" but maybe the latter is just the connector type.

All specs but the deadtimes are available:
16.2 Ohms
270 cc/min @ 3 bar
'O' ring. 14mm O.D. is available separately: Part Number 4156504700.