How much horsepower do I gain by increasing compression? by tdogg74

1 minute read

How much horsepower do I gain by increasing compression?

Courtesy of tdogg74 @ http://forums.vwvortex.com

October 25, 2007

Here is your answer....



How to read chart:

Basically, the higher C/R you start off with yields you less gain for a specific target than starting with a lower C/R.

For instance:

Going from 9:1 to 13:1, you would gain 1.2% hp.

But going from 12:1 to 13:1, you only gain .2% hp.

I guess I should note..

This is for straight-up power difference excluding modification to ignition maps.