[MFschwifty]

Just got my hands on a dragy and was having some fun tonight. I was surprised to get a sub 4 second 0-60 but noticed it's stamped invalid (low satellites)?

What does it mean by low satellites?

[ContactPatch]

The GPS based tracker probably couldn't get a good enough lock on the satellites to reliably track your time-speed-distance. If it’s overcast, cloudy, or you are on a stretch of road with a lot of trees, or if your antenna is not properly pointed you could have signal issues. Find an open stretch of road and try again.

[MFschwifty]

Interesting, I was actually on more of an industrial road. Maybe interference from the buildings.

I thought it was odd that the 0-60 was invalid but the 1/8 mile time from the same run was marked valid.

[JonasM40i]

From 0-60 your slope is -0,72 and your 1/8 mile ist +0,99.

Alone these data shows, that one is false.

Why one is valid and the other not is strange. But I would simply try it again.

[suby01]

Totally normal. Where did you place your Dragy in the car for these runs?

[MFschwifty]

The roadway wasn't exactly level when doing this pull so that may have largely affected the slope.

I have the dragy mounted on the center console below the idrive controller.

Would there be considerable improvement if I used the flat adhesive magnet to mount it on the dash in front of the steering wheel?

I worry that the flashing blue light every 3 seconds would be pretty distracting if mounted in my field of view though.

[suby01]

That’s half your problem. Dragy should be mounted literally facing the sky. So on your dashboard or on your windshield.

[MFschwifty]

Is the dragy's signal directional?

Because you mentioned it literally pointing to the sky, does it matter whether the top of the dragy (the side with the light) is facing up through the windshield or if mounted on the windshield, pointing down towards the dash?

[suby01]

Lol. No. The dragy needs the view of the sky. It can be in any direction.

[MFschwifty]

Ok, cool. Just wanted to clarify.

I'll see how well it mounts to the back of the idrive screen in an attempt to block the blinking light so it doesn't drive me crazy while driving.

[suby01]

Just put a super small slice of tape over the light to cover it up to fix your issues. Its not that big of a deal.

[g11hoonigan]

I stick mine on the sunroof frame up front. Never had any issue.

[dinan5m3]

g01 m40i runs 0-60 in sub 4secs ? clearly i'm doing all wrong.

[MFschwifty]

g01 m40i runs 0-60 in sub 4secs ? clearly i'm doing all wrong.

If it makes any difference for you, that run was with JB4 map 3 and Xhp stage 2, everything else stock.

[MFschwifty]

Moved the dragy to thecenter of the Pano glass for best signal and found a nice level road on my way for breakfast this morning so I logged a run.

Had a bit of wheel spin through 1st gear but 3.71 0-60 and a 7.89 1/8 mile ain't bad. The weather is definitley on my side today for making the most power.

Maybe after some more tweaking to map 3 I'll get down to 3.5 sec but it seems I'm hitting my fuel ceiling with 94 octane with the current boost target and my timing is starting to need correction so not sure how much more I could do without a splash of E85.

I have to locate the nearest flex fuel station where I could fill up.

[MFschwifty]

After reviewing my latest JB4 log I'm curious about the accuracy of the 0-60 time it provides in the pop up after selecting a log to view.

Once reason for the difference I could think of is that dragy is using GPS to record the data and JB4 is probably just using an equation involving vehicle speed and rpms to figure this out.

Would you agree that the Dragy GPS data is the more accurate of the two?

[dinan5m3]

Originally Posted by MFschwifty

If it makes any difference for you, that run was with JB4 map 3 and Xhp stage 2, everything else stock.

This is why i got the 2.5 sec EV, the sub-4 sec is way TOO croweded.

[suby01]

Originally Posted by dinan5m3

This is why i got the 2.5 sec EV, the sub-4 sec is way TOO croweded.

Can’t hear you over my….exhaust……..

[dinan5m3]

Originally Posted by suby01

Can’t hear you over my….exhaust……..

Yep, i'll see your b58 way, way back in rear view, slow cars.

as for sound, yeah, don't think i'll hear yours anyway, way too fast

[g11hoonigan]

Originally Posted by MFschwifty

After reviewing my latest JB4 log I'm curious about the accuracy of the 0-60 time it provides in the pop up after selecting a log to view.

Once reason for the difference I could think of is that dragy is using GPS to record the data and JB4 is probably just using an equation involving vehicle speed and rpms to figure this out.

Would you agree that the Dragy GPS data is the more accurate of the two?

Correct, Dragy is more reliable. Jb4 0-60 time doesn't tell the actual ground speed, thus cannot be trusted.

[GDEvans]

Originally Posted by MFschwifty

The roadway wasn't exactly level when doing this pull so that may have largely affected the slope.

I have the dragy mounted on the center console below the idrive controller.

Would there be considerable improvement if I used the flat adhesive magnet to mount it on the dash in front of the steering wheel?

I worry that the flashing blue light every 3 seconds would be pretty distracting if mounted in my field of view though.

The Dragy is just an external GPS receiver, which uses Bluetooth to connect to your phone - I have used similar devices for track days. The GPS antenna in the Dragy is quite small, and needs a good view of the sky. The lower you mount it, the further into the Faraday cage of the car body it gets, hence weakening the signal further.

The car GPS antenna is in the shark fin on the roof - outside the car body and with a clear view of the sky. The more hidden the Dragy, the weaker and less accurate the GPS signal. GPS signals get weaker in cities and forests, due to tree cover or reflections off buildings weakening of the signal.

Remember that the GPS signal from the satellite is incredibly weak. Anything you can do to help it will improve accuracy. Hence why it is recommended that a dash mounted phone holder is used when utilising the phone's sat nav features.

The same applies for the Dragy. A piece of double sided tape on top of the dashboard should suffice - indeed that is where Dragy recommends you place it.

[MFschwifty]

Originally Posted by dinan5m3

This is why i got the 2.5 sec EV, the sub-4 sec is way TOO croweded.

Yeah, I just enjoy the sound of an engine too much to switch the an EV. Growing up driving small block V8s I never thought I'd enjoy a straight 6 as much as them but here I am loving every second of it. Maybe in time I'll mature a little and make the switch to full EV but not quite yet.

Appreciate all the input and advice from everyone.

I chose to relocate the dragy to the pano glass and the signal has greatly improved. I find it convenient there as it's out of my way and provides a solid signal.