My RX7SP build up

[RICE RACING]

Originally Posted by NoDOHC

How level does the surface have to be to get accurate numbers from the VBOX?

My G-Tech gives dramatically different numbers if I am going uphill or downhill. It reads higher going up a hill. I know that the VBOX is to the G-Tech what a machine gun is to a dart gun, but I am curious what is required for a test setup.

The level makes no difference in a VBOX unlike a G-Tech which only works off an G reading. The G is derived via GPS doppler measure. On my VBOX3i I use also an accel and gyro unit which corrects for use in noisy (read satellite challenged area's). So I can have the ultimate/highest dynamic setting on my VBOX with no draw backs.

When you are coming to testing standards then I always use a known area that is flat within less than 0.5% over the distance, this is only so I have a relative comparison over the many hundreds of logs I have on file from cars I test. As any incline or decline has an effect on the vehicle performance... Any formula can be set up in the VBOX as it measures altitude variations so the power will always be correct but as stated for ideal vehicle performance always a flat track is best. Corrections can be applied for all normal atmospheric changes due to altitude or temperature as well, this is all common practice but is up to the end user to apply. As VBOX is used by engineers the company does not offer any of this stuff to you in "software" you develop it all yourself

The G-Tech can be a good tool if you respect these limits on basic devices like the Tesla item, > here is a factory proper lab test comparing it to various VBOX units.... its a good read and what got me into VBOX in the first place ! http://www.ausrotary.com/viewtopic.php?f=4&t=143457

Direct link to test http://www.performancebox.co.uk/down...CHvPB_Test.pdf

Here is the finished camera mount got the position good *I think* same as what I had it before I think, will test it out soon