21 replies to this topic

[GiGo]

Hooked up my VI Monitor that I got the other day this morning and did a test (on private ground). Managed to get a 0 - 60 in 5.37, just wondering what other NA times are?

[Duncan VXR]

Not looked into it but is this one of the ones that runs from the OBD2 port and not GPS based? You need the performance box (Race logic stuff) to get a more true figure of stats imo. Even the other GPS ones around are a bit to slow to react DG

[Mike (Cliffie)]

These run out of the OBD2 port and are pretty accurate to be honest Dunc.

[Duncan VXR]

These run out of the OBD2 port and are pretty accurate to be honest Dunc.

Always here to be proven wrong Mike maybe my experiance of them do not take into account the speedo rising but car not moving

Maybe if your at a local meet have a shot with the performance box for reference? More than happy to let you use it to record the times

DG

[smiley]

What's the factory figure for 0-60 miles? A few of us tested sprinting using a performancebox a few weeks ago. (NA factory figure 0-100 = 5.9 sec) near stock na's, with just the 2.4 inlet or nothing at all got: 6.7, 6.46 and 6.18 (last one was good at sprinting) (non remapped ones need 3rd gear to reach 100) Then i got a 5.9 with my mods @171 bhp (see sig) Best one was a 5.5 (190 bhp) (no engine mods, just inlet/outled optimise and remap) Was my first attempt at sprinitng, so i think i can do a 5.5, and the 5.5 guy had a damp road, and is convinced he can do a 5.3 Our fastest one is a quartermile optimised tubby (477 bhp), who can do a 3.5 sec.

Edited by smiley, 09 November 2010 - 02:24 PM.

[Mike (Cliffie)]

These run out of the OBD2 port and are pretty accurate to be honest Dunc.

Always here to be proven wrong Mike maybe my experiance of them do not take into account the speedo rising but car not moving

Maybe if your at a local meet have a shot with the performance box for reference? More than happy to let you use it to record the times

DG

It takes it's speed pulse from the ECU so as accurate as a scangauge can be and more accurate than the needle and takes the start point from the in-built accelerometer. Only sure fire way is to fit the full on stuff we use at work for times in Autocar.

[Duncan VXR]

Do they not use the performance box Mike? Sure performance car use this but obviously there is the all singing / dancing race logic stuff which takes it to a new level DG

[GiGo]

Not looked into it but is this one of the ones that runs from the OBD2 port and not GPS based?

It runs from the OBD2 port and not GPS based.

These run out of the OBD2 port and are pretty accurate to be honest Dunc.

Pretty accurate, more so in my shed and my van.

Maybe if your at a local meet have a shot with the performance box for reference? More than happy to let you use it to record the times

I'll have to take you up on that. Would love to give that a go.
Thought I'd throw up a screen shot of the VI program, looks pretty accurate accept on 2 readings, might be because of a drain in the road (the private one) causing a shudder.



Times were: 0-30: 2.0, 0-40: 2.4, 0-50 2.4 (obviously wrong!), 0-60: 5.4, 0-70: 6.9, 0-80: 6.9 (obviously wrong!), 0-90: 11.3, 0-100 15.3 (I eased off a little, d'oh!)

The VI monitor seems to work well. Also has lots of other good features like 0-30-0, 0-60-0, 0-100-0, which also gauges your reaction time. It will do a dyno test, which I haven't had time to do yet (or a dry day).

   for a VI monitor, it does do a lot more which I won't list but I wish it had a few more features, like average fuel consumption and trip counter.

Edited by GiGo, 09 November 2010 - 06:12 PM.

[vocky]

I would imagine Fab's NA would have a quick 0-60 time with his 4.17 gearbox and 228bhp

[rcvaughan]

I would imagine Fab's NA would have a quick 0-60 time with his 4.17 gearbox and 228bhp

And yours would be even better with more power and closer ratios!

[Winstar]

surly it's accuracy depends on how the ecu is calibrated as all ecu actually knows is the rotational speed of the engine, every thiing else is calculated from gear ratios, tyre radius, etc. edit or does it take a speed signal from the ABS? even so still dependent on the correct tyre radius

Edited by Winstar, 10 November 2010 - 11:48 AM.

[Graeme Lambert]

Most magazines use Racelogic boxes, us included. Also, remember that when we road test cars we usually use a little less mechanical sympathy than 'owners' - for example we occasionally flat shift, which is not something i'd do in my own motor. VI box is quite good (I tested one when i ran the products section) with loads of features, but as far as i know they aren't used in the media. G

[Duncan VXR]

Most magazines use Racelogic boxes, us included.
Also, remember that when we road test cars we usually use a little less mechanical sympathy than 'owners' - for example we occasionally flat shift, which is not something i'd do in my own motor.

VI box is quite good (I tested one when i ran the products section) with loads of features, but as far as i know they aren't used in the media.

G

Who said we dont flat shift from time to time

DG

[Kieran B]

our of curiosity has any one plugged in one of thee boxes and tried this with a SC VX?

[smiley]

fastest SC we tested was a 0-100km in 4.2 Nobody on the factory number for 0-60 miles for an NA?

Edited by smiley, 10 November 2010 - 03:17 PM.

[Kieran B]

fastest SC we tested was a 0-100km in 4.2

Nobody on the factory number for 0-60 miles for an NA?

0-60 mph 5.6 s
Power Output 144 bhp
Torque 203 Nm 149 lb-ft


reference My link

[2.2_na]

Are these times not all relevant to how fat much the driver weighs?

[GiGo]

Are these times not all relevant to how fat much the driver weighs?

You trying to tell me something!

With the VI monitor you input the weight of the car.

[Ouchie]

Factory times were done on standard tyres. Which are ok but certainly not a set of cut slicks. Isn't there a video on the interweb of a somebody doing the 0-60 times and having to stop after a few attempts as the clutch is destroyed. Might be on the Lotus Elise story.

[techieboy]

I tried it once with RaceChrono and a 10Hz GPS receiver when my car was a Stage 2 NA (so could do 60 in 2nd) and got 5.49 although I wasn't massively aggressive and it was only one run (also on 888's). So, I'm sure if somebody who didn't give a toss about the car tried, they would probably have beaten that. Have a Performance Box in the car now but have never tried since going SC. Personally, knowing how sh!t the OBD protocol that we use on this car is, I wouldn't hold much hope of any device being accurate that tried to derive anything from the OBD data.