0-100kph times?

[newsuba]

Because all those devices tap into the signal from the car's electronic speedo.

So if the car speedo is not accurate, and most are not, the inaccuracy carries down to any further processing.

To get a truly accurate performance figure like 0-100km/h you need a GPS assisted measuring system.

[DPI]

 newsuba said:

Because all those devices tap into the signal from the car's electronic speedo.

So if the car speedo is not accurate, and most are not, the inaccuracy carries down to any further processing.

To get a truly accurate performance figure like 0-100km/h you need a GPS assisted measuring system.

And, NO, not a cheap GPS device either...

[aim]

 DPI said:

And, NO, not a cheap GPS device either...

I guess one that updates atleast 100 times a second

[newsuba]

Yes, more CORREVIT® than Uniden or Timex.

;D

[V8eta]

I've always found the passport gtimer has been 2tenths and 2mph slower than actual drag strip results.

[newsuba]

G-timers and the like use a basic accelerometer (a small electrical device that uses the changes in its electrical output to measure acceleration).

Cars under accelaration usually pitch and roll, confusing the accelerometer.

That's why car magazines don't use accelerometer devices for performance testing.

Instead they use sophisticated GPS devices like the Correvit and VBOX that take readings from at least four of the 24 GPS satellites in orbit above our heads.

G-timers are a fun toy but you shouldn't take them too seriously.

[newbie]

Read about the VBOX. NZ Autocar swears by it.

[GC8E2DD]

NZ Autocar VBOXs New Zealand new cars, in New Zealand, with local gas. The cars usually only have delivery kms. February last year they clocked the current model STi at 5.18 seconds (0-100km/hr, not 0-60 mph). A few years ago (and I have the issue somewhere), they VBOXed a 2003 GTB sedan at 5.4 flat. Incidentally, the newer 2.5l GTB was clocked by them at 5.67 seconds. I remember them clocking a bugeye Spec C under five seconds, but I would have to hunt to find that issue.

[newsuba]

I told you guys the single turbo BL/BP Legacy was fast !

;D

Don't remember the bugeye Spec C test but in 2001 they previewed the v7 STi by testing a v7 STi RA.

0-100km/h in 5.3sec on the CORREVIT they were using back then.

[GC8E2DD]

 newsuba said:

I told you guys the single turbo BL/BP Legacy was fast !

Don't have to tell me ;]

[DPI]

When you took mine for a drive Mike, it felt like you were trying for a 0-100kph time... ;D

[Ryan]

 DPI said:

When you took mine for a drive Mike, it felt like you were trying for a 0-100kph time... ;D

Haha good stuff

[newsuba]

 DPI said:

When you took mine for a drive Mike, it felt like you were trying for a 0-100kph time... ;D

That was the Spec C RA weaving its magic spell.

;D