Could only find the following thread http://www.astraownersclub.com/vb/sh...hlight=economy which were all about standards, bar 1 post.
I'm just browsing to see what catches my eye as the Z18XE replacement & i'd like a GSI, but it's whether i could live with the fuel consumption.
I'm not after standard figures as i know they're approx the 30 marker +/- 2-3mpg.
How about when you start modding your GSI & you look to be getting it remapped? I've read about stage 1, 2, 3, 4 & such, but only have a brief gen on what this means.
What's the "expected" mpg returns once you go this route of remapping/modding?
Am currently hitting 36/37 tops in my Z18XE & just looking at a comparison.
I mainly do 50/60mph driving on 6 mile trips (work). I'll drive to town occasionally which will throw in a few 30mph zones. I go the motorway but only rarely. The Z18XE will hit about 39 on a m-way run. Might just edge the 40mpg marker.
Want to find out whether i should put an end to my interest in a GSI now or not lol.