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You can cut the valve out and use it on your new hose, that's what I did.

As for idle, I'm sure with the new IM there has to be a leak or something uncapped. Did you replace all silicone hoses, check the vacuum chambers weren't cracked etc?

RX8SE3P wrote:You can cut the valve out and use it on your new hose, that's what I did.

Just used the old piece, works fine now.

RX8SE3P wrote:As for idle, I'm sure with the new IM there has to be a leak or something uncapped. Did you replace all silicone hoses, check the vacuum chambers weren't cracked etc?

Yeah its all new and capped.

But I replaced the coolant sensor and that did help a lot.

Still not how it's supposed to be i guess: rev - 5000, catches at 900/1000 rpm raises to 1100rpm drops to 600-700. Steady.

But at least that better than drops to almost stalling to climbing back to 600-700.

can you take a pic of your engine bay?
Also, how about the VRIS chambers underneath the intake manifold? They like to break, that could be a vacuum leak.

Everything was inspected before install.