2013 Subaru WRX STI: 3rd Sensor Placement up front?

[wirelessandy]

Hi folks,

Currently waiting for extension cables to get 2 rears installed. Pondering ordering a 5th for up front.

Question is: Where do I place it?

3925

See attached photo. I've got two sensors tucked in the corner of the grille (red circles).

I have an offset license plate. Should I place a 3rd front sensor on top (circle "a") or the bottom (circle "b") of that plate? This is assuming my front plate is a target.

Or, mount it centered ("c" through "f")?

A few thoughts:

1) I know I could run without a front plate. I just choose to.
2) I like the offset plate: The center mounting location screw holes are pretty awful and wobbly.
3) I'm only guessing LEOs target the front plate; that's why I circled "a" and "b".

[SLO]

http://radarandlaserforum.com/showthread.php/4526-2011-Subaru-STI-ALP-QUAD/page3

[wirelessandy]

Oooh nice! So the offset plate is no big deal as a "target"?

Off topic: Is "SLO" as in... Cal Poly? (I was paroled from there in the early 90's.)

[SLO]

Your grimmspeed plate relocator shouldn't be an issue but testing the setup after install is best. SLO is part of my plate. My plate is SLO STI.
A little video of my car.
http://youtu.be/9xG3ufbxmLI

[RedRocket]

Your grimmspeed plate relocator shouldn't be an issue but testing the setup after install is best. SLO is part of my plate. My plate is SLO STI.
A little video of my car.
http://youtu.be/9xG3ufbxmLIOMG - now I know why your upgrade to AL-P was delayed, I can see your discretionary benjamins were spent under the Hood & it is damn fast n' sweeet,too !

[wirelessandy]

Sweet googly moogly! What a car!

I was thinking directly below the emblem (position "C"). A little easier for me to hide the cabling.

Thanks SLO!

[Holla]

SLO--that is insane my man, have you taken it to the drag strip to see what it can do in the 1/4 mile? Im thinking high 11's--12 sec

[SLO]

SLO--that is insane my man, have you taken it to the drag strip to see what it can do in the 1/4 mile? Im thinking high 11's--12 sec

As to not hijack this thread. We should post this in my thread. But to answer your questions. No I havent taken to the strip. Yet. Also my numbers are Mustang Dyno numbers (lowest reading dynos) on a dyno jet would be over 700awhp. There are more than a few STI's making
550-625 Mustang dyno awhp running 9.7's - mid 10's. Not sure what my car will do but I will see one day.

[wirelessandy]

Update: I've got a Quint system in place now.

Third sensor up front in position "C" (see first photo) right under the emblem.

Front sensors are set as 1-2-3 as suggested.

I bought a Stalker lidar unit off another member on this forum. Finally got around to stationary testing. I stood back as far as I could in my building's garage- about 70 feet.

The Stalker will read E04 (jamming signal detected) often enough, especially when pointed directly at the sensors. But sometimes, especially if I aim at the bumpers under the headlights or the offset license plate, the Stalker can get a distance reading. (No E04. And, no speed reading, of course, because I'm standing still)

I'm assuming this is not good....? I'm slightly concerned. I figure if the Stalker can calculate distance, it can get speed (if the car is moving).

At LEAST no matter where I aim, the ALP sounds of an alert.

[SLO]

Stationary testing means nothing. It requires more pulses to get a speed reading than a distance reading. Drive her down the road and if you have it installed right you will get nothing!

[wirelessandy]

You beat me to it. I came back here to say the same thing.

I did some head scratching and watched some videos. Yes: Premise flawed. Stationary isn't how this will be used.

On a whim, I WALKED towards my car while trying to get a speed reading. Without ALP turned on, I could "clock" myself walking towards my car at 2-3 mph.

Pointed at a wall and walked: 2-3 mph.

ALP on and walked? Much harder. The Stalker struggled. ("E04 No wait... uh... E04? Hang on I got it... uhh...")

One of these days I'll find a cooperative pal and test this real-world. Thanks SLO.

[BestRadarDetectors]

Yes.. It's easy to get a distance because you only need 1 return pulse. To get a speed you need concecutive pulses and they need to be in order. It's a night and day difference.

[wirelessandy]

Very good explanation! Great.