Anyone Running APR Stage 3+?

[noone]

Who fitted a ko4-025 ? They are one side of an RS4 twin turbo? Are you sure its not a ko4-022 or -022 ?

I'm pretty sure, his thread is here

If your going to run a gt28rs your going to need the following:

440-630 injectors
front mount
Stage 1 clutch min
lsd
spark plugs
tune

The gearbox will handle a mild upgrade like a gt28rs but you'd require an lsd as minimum . The diffs are weak and will break.

I think there is a lot of difference between what is required and what makes sense. Is the gt28rs specified as the turbo for any of the Stage 3's?

I don't think the APR needs FMIC, injectors, fuel pump, I can't see where they have stipulated its required.

Those injectors are much bigger than I've seen specified elsewhere.
LSD, makes sense, but is it required? Is the stock diff very weak? Do you have experience with the Polo diff or is it the same as mk4 or another vehicle?
Spark plugs, is there an issue with the stock ones with the additional power, fuel, etc? I know some people have upgraded, but seems to be for their own peace of mind, rather than requirement.

All good info, I'm thinking about going down this path, but with all the extra's needed, think the Polo might not be a great platform.