These are all ive tried so far but I create an uncommon locomotive and the speed is the same, there is no change to the tooltip suggesting the mod has changed anything.

Same with rocket silo.

It's enabled in the startup menu, I removed editor extensions after seeing the other thread. It was an addition to an existing save.

Is there a way to output mods and conflicts that might be arising? I'm using quite a few

I tried with no other mods besides elevated rails/quality/space enabled and still doesn't work; uncommon loco with rocket fuel goes exact same top speed as normal one, no indicators (little blue dots on tooltips) that the speed is affected.

What mod does the tooltip say the locomotive is from? base or this one?

When I uninstalled everything,just base.

With other mods present Cerys

Rocket silos are working for me - try putting a legendary silo next to a normal one, and compare how fast the rocket launches/is raised up. There is currently no tooltip addition for rocket silos etc., but I'll think about adding one.

I found the issue for the trains - fast replace doesn't work for mobile entities, so locomotives weren't correctly modified.
This should be fixed in 1.1.0.

Hey that seems to have fixed the trains, haven't had chance to test the silos but have a bunch of rare ones lined up ready to give it ago. The tooltip hasn't changed for the loco, but the speed when actually in it is up - using uncommon with regular rocket fuel.

Yea, the tooltips are something I'm still thinking about. Since it's not possible to dynamically update the item tooltips depending on quality level (items of different qualities always have identical tooltips, apart from the built-in quality modifiers), I'd have to put something like "acceleration +30%/level, speed +7.5%/level", which doesn't seem exceptionally useful.

For the placed entities, I could show the exact values (eg. showing storage tank capacity in the description, so you don't need to put in some fluid to see it), but I'm a bit wary of spamming tooltips and risking to push useful tooltip items offscreen. Locomotives should already show the new max speed and acceleration when placed down.

Yeah it works which is the main thing, I have a huge fulgora train base and can spot the rare trains from the map as they zoom along