What is this pipe?

[SAS_Racer]

Just got my RX7 back home and had a look around it to find a few things. just want to check with ou people to see what you think



and also what is this box ill trace back the wires tomorrow if i dont get an answer but im too hooked up on getting the engine out atm



Thanks very much in advance guys

[Mir]

The blue pipes are boost pipes which controls your boost. The box you had in your hand looks to me a Turbo timer!

Hope this helps
Mir

[SAS_Racer]

no noo not the blue pipes there vacuum pipes the corroded one under the right hand vacuum pipe what is its purpose it seems to be for coolant but why is it not connected?

[davehg]

its for the air pump which you wont have connected now

[FD3S-UK-8000]

Ah, i have wondered that too. i have that on my car, but it has a hose and then *what looks like a big one way valve* which has HKS stamped on it. and it just dangles in the engine. the other ends not connected to anything.... Can i remove it and just blank off that same pipe at the top picture?
regards.

[SAS_Racer]

fd3s uk thats a good question actually but im going to take off the plenum since im taking the engine apart and it attaches there so im going to be making a blanking plate if you want i could always knock up 2