Rb25 Neo Manifold Question

[R34WGN]

Hi guys as the topic says want to know. What is the valve or whatever the thing is hanging off the back of the inlet manifold that is near the fire wall . And if i can F!!k it off or not . Please anyone as i want to put a gtr style manifold on my wagon ???????

[Bronx]

you can buy a gtr style manifold, all rb25 manifolds are interchangeable, just dont buy a rb26 manifold, that wont fit.

the rb25 gtr style manifolds have all the crucial valves and pissy pieces available to keep your car running.

[QWK32]

The valve hanging off the back of the stock manifold has two functions, its the idle control valve and cold start valve. Probably not a good idea to get rid of the idle control function of it.

If you get a neo specific aftermarket manifold it should have a place you can bolt it to, other wise you will either have to make up an adapter plate or get an R33 RB25 idle control valve. The older RB25's have separate idle and cold start valves.

You may get away without having the coldstart function, I had to block mine off once before and it had no I'll effect, mind you this wasn't in the middle of winter and I'm in queensland.