so my brothers friend is a automotive tech. and he had mention to me that he had heard from someone else that if you get a spacer for the engine cover, you actually get about 40 more horsepower. because when you space the engine cover from the engine itself, it gives the engine a chance to breathe...heard anything like this???

 

wow, try search function, or just do any search on the internet for spacer and 350z...

 

it will not give 40 on it's own.

 

Thread fail imminent.

 

Engine cover? Yeah if you space the plastic a little higher, gives you a lot of...

 

all you have to do is look for plenum spacer in this thread:

https://my350z.com/forum/2003-2009-nissan-350z/197329-the-top-100-common-questions.html

and welcome to the boards.

 

 

with a good intake and exhaust you will see 10hp with the plenum mod.

 

LOL.........

 

You wont get 40 hp from anything bolt on...unless you count FI