Hi all, relatively new to Scoobynet.

Query is, I done a Dyno day with my last STI. Now when it was on the Dyno, the bonnet was left up. Surely the bonnet should be closed so the fans are actually feeding the TMIC directly instead of blowing air around the engine bay?

 

Yes bonnet down is the best way to get air to the tmic, as otherwise you dont get a direct feed with the scoop and undertray

 

yip, should be down, dont agree with the top mount focused setups either

 

Thats what I thought, surprisingly all of the Subaru's that day were down in power.......