Mikey3000

Does it pose a problem to have a long run of vacuum hose for these things? Let's say you're using typical parts store rubber hose to go from the back of an intake manifold to the blow-off valve and because I want to route it nicely the length of it comes out to 5-6 feet. Barring any kinks in the hose, will the BOV operate properly? How about the MAP sensor? I want to move mine inside the car to clean the bay up a little bit, so if I'm adding a foot of hose, would there be added delay in the MAP getting readings?

azandford

look into a vacuum manifold

Mikey3000

please explain how that would help. i know what a vac. manifold is but i don't see how that answers my questions.

raene

I run long hoses for my BOV and WG. I have an MBC run into the cabin and then out to the WG. Works fine. The hardness of the line you're running matters more than the length, IMO.

I believe his idea was to have you run one line to the vacuum block wherever you wanted it, say in-car, and then multiple lines out of that to wherever. Idea being that it cuts out segments of line from the IM to the vacuum block, in effect shortening the line.

Mikey3000

thanks for the clarification. i agree with your statement about stiffer hose. i was hoping to get some ideas on other types of hose i could use.

raene

I am using a soft rubber hose as well It does work either way, soft or harder. Your next step up would probably be silicone, then pushlock fittings.

Biggest concern with flexibility and the rubber hoses is heat. The MAP in-car shouldn't see much heat in the hoses from the bay, optimally. The MegaSquirt has an option to run an onboard MAP with a line to the ECU from the manifold, for example.

Basically I have no experience running a MAP in-car, but I don't think it would be a problem. Should be easy enough to test either way