Hey guys,

I'm trying to setup a little comparative study between the various pulley/cog/impeller combos available for the Vortechs.

So basically if any one has their boost vs rpm logs from a pull or dyno run (starting at ~2500 rpms to redline--- NOT random hwy runs or short pieces) and would wanna send them to me (pm me for email), i'd really appreciate it. The more data points in the log the better.

I do my pulls in 3rd gear, which is pretty easy to get a full range pull on the street.

I'm looking for

3.33 pulley, any cog combo, any impeller
3.12 pulley, any cog combo, any impeller
2.87 pulley, any cog combo, SC impeller
even the 2.62 pulley, any combo

I would add the findings to the vortech sticky, and this way people could see on average what any mechanical change would have on their current steup, in terms of boost and when it comes on.

 

You have mine already. You should post that picture so others can see what you are trying to achieve.

 

So here's one look that I want to present with data from other sources. With numerous data points, you can see how the same setup can have varying boost depending on weather, etc.

Granted that boost doesnt = HP, and boost is affected by intake and exhaust restrictions, but lots of data points can paint an average picture. I just need more logs to make it a better representation.