Hi everyone,

this is a subject close to my heart, i run a superb tdi 1.9 130 pd, with a psi power box on the factory tuning setting, and i use unicat 4. last summer i did a long trip from scotland to Leicester the trip computer showed 66mpg, this was in very hot weather and with the cruise control set to 70mph. when i filled up on the motorway my computer told me i had just over 900miles in the tank at 66mpg!!!!

my overall average is 48mpg however, how accurate are these trip computers?

my father runs an octavia tdi 90bhp with the psi powerbox, he managed 72mpg on an hours drive last night!!

To fill up with LPG costs me about 16 GBP at Morisons (44Litres) which gives me about 250Miles on the motorway and 180miles rush hour traffic.

So for 20 GBP is about 310 miles on the motorway and 225 rush hour.

Shame I only get 10 GBP discount on my car tax for the trouble :-(

Paid for the conversion in 10 months, making heavy profit on company millage at 35p per mile with motorway driving cost of 6p per mile (fuel only), and I havn't noticed any loss in performance.

I get about 650 miles out of my Superb 1.9PD100 (700+ if you take it easy!)