Barometric Correction - do I need it

[luxmoggy]

Hello,
I have been reading lots about Barometric Correction. The question is do I need it constants correction or get the value on start enough?
I live at 200M (600ft). My drive to work goes under 100M (300ft) and finishes at 400M (1200ft). I regularly go to sea level and a few times a year I will go higher.

I am hoping to fit the engine and start it around Christmas.

Thanks

http://joebloggs.no-ip.org/

[elutionsdesign]

Value on start will work fine.

[luxmoggy]

Hello,
Out of interest at what height change does the Barometric correction start to be needed?
Thanks