I just installed my STI-R today, and have been running my Vector 995 as well. MY STI-R is mounted directly under my front license plate, the front of the receiver being parallel to the front of the plate, with a clear view of the road with no obstructions at all. Before I started running the 2 together, I was just running the STI-R by itself, and noticed it wasn't alerting where my 995 would alert to falses (drug stores, convenience stores and shopping centers). I decided to run both at the same time tonight just to see, and the 995 alerted a couple times while the STI-R was silent. One case in particular the 995 alerted first, the STI-R followed a few secs. later, and then the 995 stayed with the alert while the STI-R dropped off and became silent. Also, the off axis alerts don't seem to be there like with the 995. Mind you the 995 has the older S7 horn and seems to be outperforming the STI-R all the way around.
Is this normal behavior for the STI-R? From what i've gathered from others on the forum here, the STI-R should be alerting well before the 995 even thinks of making a chirp. Can anybody shed some light on this situation? Does it seem like my STI-R is a dud? I'm very curious about this.