I've got my intake manifold off and I'm looking at the mess and wondering if any of it can be thrown out or simplified.

I've gotten rid of the cycling valve and done the venturi delete. Anything else I can do?

 

get some of that fire sleeve stuff to protect whatever loom or tube's you have .
cut up a coffee tin and make a turbo heat shield and cover some of the dump pipe that radiates heat there.

 

It might rattle though.

 

That is why they hide it under the intake manifold becuase it is not viually appealing.

 

fix it so it doesn't rattle

 

Have the injectors flow matched (or replace) as well as the FPR, good time to replace other vacuum lines that are in bad shape. Clean and check the ISV for leaks, I epoxied mine. Also consider a throttle body rebuild kit. It may also be a convenient time to replace the plugs. My "under intake" project ended up being over $1k but I'm slightly paranoid with my car.

 

New injectors, 3 bar fpr, most vacuum lines replaced.
Thanks for the ISV and throttle body ideas!
There really isn't any reason to replace the plugs as long as they're colored correctly, is there?
(I guess I'll replace them if I ever have the intake off for a turbo upgrade!)