Hi guys:

I've just installed the Motordye plenum spacer today and I feel a big increase in sound. It's a more loud and deep sound.

Is this normal or I hav done something incorrectly.

Thank you very much, the thing is that I donīt notice an increase of power at all...

 

Everything should be fine. In my experience quality spacers and plenums balance -- more to the front cylinders less to rear -- and increase the air flow the cylinders. This causes a change in intake as well as exhaust sound. Usually for the better.

DaveO

 

Yep. They certaintly make the induction sound louder and deeper. And even if you can't feel a difference in HP, its certaintly there. You have at least 11 more HP to the wheels. Possibly more.

 

>You have at least 11 more HP to the wheels. Possibly more.

Hydrazine,

I installed a AEM Cold air intake, and Stillen headers/exhaust.
It now sounds great and has boosted performance ~30 RWHP!
Have you dynoed power gains for my similar enhanced config
with the MD 5/16 ISO Cu plenum spacer?

Thank you in advance.

 

Not specifically for your set up, but they have been installed on just about every concievable mod setup.
From all of the dyno testing I have seen, the results are generally the same. They always make the same type of "gains" no matter what you have installed.