What would be the benefits and/or drawbacks of opening up the ports up on a stock S5 turbo manifold and turbo?

Thanks
Mike

 

I don't know if you'd really gain anything. I smoothed out my manifold back in the day, but I don't think it did anything special.

Porting the wastegate does make a big difference, though.

Dale

 

Hey dale, do you have any idea around how low I could keep boost if I ported my S4 wastegate as much as possible? (sorry to hijack your thread turboGXL )

 

its lowest boost level is decided by the spring in the wastegate actuator.

 

Well, I did open the ports some on my manifold.
I noticed more lag than before, but it seemed to have more high end too...

I was just trying to figure if this was imagined or not...

 

it's funny because extrude honing, will give you about as much as a cat-back. and yet people are so reluctant to go for it. It really depends on your mods, and obciously the higher ther HP the less effect it will have.

 

yea, after porting mine i did notice a little bit more power, but not a ton.

-Chris