Who's done it what's your opinion of the map
fuel consumption
and performance ?
Cheers
James

Not done it wouldn't do it on a FL2 as the rear Differential is only just up to the job in standard tune, more torque can only bring an earlier demise Tangiers Orange - gone, missing her
Replaced by Ewok what a mistake - now a happy Disco Sport owner

I reckon the rear diff will be fine. It's pretty beefy, but made badly.
The pinion bearings are far too tight from the factory, which is why they fail early.

With a correctly rebuilt rear diff, it should be fine.
The PTU is the weak link, along with the gearbox/clutch, none of which are really up to the job, if increased torque is going to be found. Hyundai Ioniq 5 Ultimate. The family car.
2009 Rimini Red SE TD4. Gone.
2006 Tonga Green i6 HSE. Gone.
Audi A5 convertible, my daily driver.
1972 Hillman Avenger GT, the project.

Celtic tuning down in cornwall did mine over 2 years ago. I have seen an MPG increase of 5mpg on average and it runs allot better now, smoother power delivery, it doesn't smoke like some mapped diesels do either. They have a really good reputation in the Honda community and used them when I owned a Civic 2.2.

I've an Alive map on our SD4 courtesy car.

Does 50+ mpg on a run, puts out best part of 230bhp, its great fun. Been mapped for 2½ years, and not put a foot wrong, other than a split turbo hose

Same here, SD4 with stage 1 map, two years and no problems