HSV is pulsing in conjuction with IDC.

[Richard L]

The hSV should only pulse with the injector after reaching the threshold. Let me know the serial number of the flow sensor.

Can you tell me where you purchased the HFS-5-v9 from, the HFS-5 v9 has been discontinued since August 2008 and replaced by the v10.

[gunite]

I purchased from Vivid Racing about 1 1/2 years ago so it sat aroung for a while before I installed it. The ser# of FS is 3789. Can you verify I have the proper conections to my ECU. I have the green trigger wire going to pin 17 (RW) and the red wire going to pin 1 (BO).