hello I have a S40 t4 2003 and I bougth the apexi turbotimer and i would like to intall it, an you elp me with the instalation because I do not know how?

 

I'll bite.
Looks like you dropped $120 on some product that takes place of the thought process.
After hard driving, you should have a few miles of easy driving before you shut down the engine. This is usually sufficient. An additional minute or two in the parking lot idling before shut down will do.
Synthetic oil also helps protect the turbo.
The thing should have instructions with it and a toll free phone number if you have trouble.
Ed