Mk6 Golf Acceleration & Performance Data

[VW Central]

Yeah, just another thing if we are posting 1/4 mile times can we please get the tyre pressure too

[REXman]

Hey y'all.. So how did FAB and DaveR go?? Any times yet lads?

[dave_r]

In a word, disappointing.

Exactly half tank of fuel, driver only (no passenger)

Run	Gtech	PerformanceBox
1	5.25	5.6
2	5.02	5.2
3	5.36	5.7
4	5.09	5.4

Runs 2/4 being the return trip. Outside temp was around 18deg according to the MFD, didn't bother with any VCDS logging.

I was told to expect ~4.9 for an APR Stage 1 tune with the PerformanceBox from the APR dealer who did the tune. As you can see, the car isn't near those figures. Only stock figures I can find are the claimed 5.7, don't have any of the aussie mags near me to confirm their results.

And with LC, its pretty hard to get it wrong...

[AdamD]

Run	Gtech	PerformanceBox
1	5.25	5.6
2	5.02	5.2
3	5.36	5.7
4	5.09	5.4

Sorry to hear you're not seeing the numbers you'd like Dave. Still pretty decent - 5.2 is not hanging around, by any means, and it is three tenths better than what VW claims for the stocker. What was the ambient temperature for your runs?

Interesting to see the difference between the Gtech and the PerformanceBox too (although not surprising). The former does actually delay the starting timer to give you the maximum benefit of perfect staging (great excuse for slow response, hehe), and its GPS chip is only 10Hz so there's a significant issue with accuracy there too. I've got one of the latest Gtechs, and I'm sure that my best run was at least a couple of tenths optimistic.

One of the best ways to check how long the Gtech has taken to respond is to look at the detailed plot screen for the run, and see the speed and time for the first plot. If it says you're doing 10km/h inside of a tenth of a second, you know why the run under-read quite so much.

[Corey_R]

Is this Fab_R's older non-GPS GTech unit?

[AdamD]

Is this Fab_R's older non-GPS GTech unit?

Ah, if that's the case, then that does explain at least some of the discrepancy then.

I've read somewhere that even the new Gtechs rely largely on the accelerometers to start the run timer - so, the same mechanism as the older Gtechs. Once you're on the run you can count on the new version being more accurate (accurate at least to 1/10th thanks to the 10Hz GPS). Checking the speed and time for the first plot point should give you the info you need to determine the approximate delay for the run start (if any).

[Fab_R]

Sorry to hear you're not seeing the numbers you'd like Dave. Still pretty decent - 5.2 is not hanging around, by any means, and it is three tenths better than what VW claims for the stocker. What was the ambient temperature for your runs?

Interesting to see the difference between the Gtech and the PerformanceBox too (although not surprising). The former does actually delay the starting timer to give you the maximum benefit of perfect staging (great excuse for slow response, hehe), and its GPS chip is only 10Hz so there's a significant issue with accuracy there too. I've got one of the latest Gtechs, and I'm sure that my best run was at least a couple of tenths optimistic.

One of the best ways to check how long the Gtech has taken to respond is to look at the detailed plot screen for the run, and see the speed and time for the first plot. If it says you're doing 10km/h inside of a tenth of a second, you know why the run under-read quite so much.

The thing that is wierd to me is the difference in the runs (Gtech -v- Vbox) - 2/10tenths to 4/10 tenths. Its not a consistant difference???!!!

[Bakks]

Has anyone done any quarter mile drag runs with a chipped R?

[Mr_Bob]

The thing that is wierd to me is the difference in the runs (Gtech -v- Vbox) - 2/10tenths to 4/10 tenths. Its not a consistant difference???!!!

Due to 10Hz resolution
It could be that the lower reading is -0.1s and the higher reading is +0.1s (then vice versa in the next result)

[Fab_R]

Due to 10Hz resolution
It could be that the lower reading is -0.1s and the higher reading is +0.1s (then vice versa in the next result)

Hey Bob i dont follow?