Whats the condition of your radiator? when did it last have a coolant change? are the fans kicking in when it gets hot?
If the water temps are getting that hot i dread to think whats going on with your oil temps, might be worth looking at an oil cooler kit, should help keep the general temps down as well.
If they were bedded in originally then when they went back in they were rotated they would not be align properly. For the cost of a set of rings im amazed they didnt replace them given its not huge money.
1L over 1000 miles is about the point where a serious issue is there. If its been recently built and its using alot of oil i would suggest either the rings havn't bedded in properly, hasn't been built right or something internal has failed.
I don't mind having a read.
My car is pretty heavily modded from stock, although done by a specialist including full custom block up rebuild so its long term stuff rather than DIY over the weekend.
More info here,
I don't mind reading it, but i would have thought it would be better to go to a specialist who has alot more experience with multiple cars. One thing about subaru's is different cars react differently to the same mods
To play devils advocate, lets say a ECU is left unlocked and a mapper comes to tweak it and decides to copy the map and use it on other cars? either as a base map or just a flash map?
I can see arguments both ways tbh, its one of those types of discussion that rumbles on.
most mappers lock the ecu. Who owns the map is an ongoing discussion, does the mapper who's work it is, or is it yours who commissioned the work? So they tend to be locked and if you want to go elsewhere they have to start from scratch.