has anyone fitted a power upgrade chip? i am thinking of fitting one and would like to know which is best, and what mpg improvements to expect.

Yes, I have actually installed a power chip on my 2005 Terracan 2.9L Diesel and the improvement is amazing. The mid to low end improve dramatically while the low end has a noticeable improvement.
I ordered this module from… (better PM me, I don’t know if it’s legal to disclaim this info in the forum) in the US and paid a very reasonable amount of money for it, about $320 with shipping and local taxes paid. Make sure to check out the PowerBoxCR that is digital, they claim it’s better since it’s digital. Mine is the analog version but works beautifully.
Fuel mileage…….. I just wanted a boost in power but I’ve been spending the same, maybe a little less in fuel, so it actually boosts the power plus.
Just remember to uninstall it befre taking it for service, at least in this country, you void the warranty if you install this kind of devices. Check yours.
Buy one, it’s definitely worth it!

thanks elsqua, there are a few on the market here, but like most things they are double the price about £300! thanks for the advice about servicing! :thumbsup: