3 questions about intakes... can i do away with it?
 

ok guys im doing a custom intake and i wanted to know what i can do with that pipe coming from the intake tube that has a red arrow going to it... i know it goes to the coolant deal that attatches to the TB... as you can see in yellow i have done the throttle body mod.. and in green shows the tube that went to the thermowax and where it should connect to the other hose but i havent found a connector for it yet.. going to lowes tonight to try to find a 90 deg brass pipe.. anyhow do i just put a mini filter on that tube (with the red line pointing to it) or cap it... it went the to the intake hose stock... i.e feeding fresh air to the device on the side of the manifold.. thanks in advance...

christopher

https://www.rx7club.com/forum/attach...postid=2747171

That tube needs to be connected to an air source after the AFM. So you will probably want to install a nipple on your intake tube. You need to feed the BAC with metered air to maintain idle.

The tube that went to the thermowax can be left open (and the coolant feed at the other side plugged) if you have eliminated the cold start cam and secondary throttle blades.

ok so i need to route a tube from the intake to the tube with the red arrow to it.. and i can leave the tube with the green circle around it open and cap off the green drawing on the far right? did i understand that right.. thanks man

bump can somebody check me?

Its hard to see from your diagram, but if that is the coolant tube, the line should run through the BAC if you are keeping the BAC.

what do you mean keeping the BAC? can you get rid of it?

The BAC valve supplys extra air to increase idle, when the engine is under load (like the air condition or power steering is on/being used).

It also helps with starting.

You can remove it, if you feel that you don't want the ECU to compinsate for extra load on the engine at idle or near idle situation.

ok icemark i understand now.. thanks for the info.. since i still have a/c and p/s i will rig up a line somehow for the BAC... thanks again