velocity stacks

[Patrón]

Originally Posted by FNG

First of all i did search the forum and i did do my research. The links you posted were mostly garbage...

Your second link is a single post with a picture and a link. No information at all.

Your third link is completely heresay as there's absolutely no first hand information and only guesses. No real information here.

Your fourth link has absolutely no information at all besides a link.

So do your research before you flame or you'll just end up looking like an idiot.

The first link has a guestimate from FMU with an estimated horsepower increase of 5-20 horsepower. Though the horsepower estimate doesn't seem much, it proves that your first post in this thread is horseshit and you have absolutely no clue what you're talking about.

Owned!

[Law]

It has more to do with volumetric efficiency and frequency tuning.
Just because more air is available due to open stacks doesn't mean it is the most efficient method for the engine to take advantage of it.

For similar reasons, engines have exhaust manifolds and exhaust systems designed to take advantage of volumetric efficiency and frequency tuning. Like running open throttle bodies, running open headers (or none at all) results in a decrease in performance.