[Pololo_M3]

Hi guys,
Anybody has any experience with Supertech valves?

Trying to decide if I get a set of these exhaust valves for a head refresh, while also getting Vanos and rod bearings done.

I've read really good reviews about these valves.

My car is a weekend car, with occasional spirited canyon driving... but I don't track the car.

From what I have gathered, it seems that for my application and purpose, I'll be reusing the stock springs (plenty of strength) but installing new guides/shims.

I searched but there were no threads about this topic.

TIA,