I think I remember something about having to modify the engine cover to get it to fit after installing the Thermoblock spacers. I've tried searching "spacer engine cover", "spacer cover modification", etc. but I still can't find the answer. What needs to be done to the engine cover to get it to fit?

 

I didnt have to change anything about the engine cover. it still fit fine for me

 

If any thing its the opening for the map sensor on the TB (if you put the tb spacer on)

 

a little dremel to the end over the TB spacer is all you need to do

Its actually better to leave the cover off- reduces intake temp even more!!