Yerrr
 

Is it worth getting upt intake manifolds on a completely stock car?

I would say no, get an exhaust first. If you are worried about your noise level, get a factory Nismo exhaust that someone has replaced.

I would say no it’s not worth it. To gain 8-14 whp for all the labor and coin spent to install the Z1 ported intake manifold is not really worth it from what I have seen. I agree with Spooler start with your exhaust first.

It's actually pretty cheap/easy to install this part, personally I thought it was worth it - especially if you can get it on sale. Edit: Only applies to the Z1 mani, didn't think the M370 was worth the cost.

my buddy hand ports them. Friend of mine two different dyno made 360whp with PPe cbe and his manifold. I picked up 14whp in parts of the powerband untuned.