Batlground and kiddracing headers are all the same,

they are selling the same header.

from the pictures i see

 

How is the ground clearance?

 

No ground clearance issues. The unit tucked in just as tight as oem, which makes sense as it has to connect to the cat.

 

any dyno's yet...aside from the questionable ebay one

 

So I did some research on the ebay graph this morning and noticed something new to me in the top right-hand corner: "Smoothing: 5"

The below link is to a set of dyno graphs that show how a tuner can adjust results based on program settings. Bishop's performance is a bike tuner:

http://www.bishopsperformance.com/dynoinfo.htm

If you look at the difference between the first and third graph you'll be able to see the difference smoothing makes in a dyno plot. One graph looks smooth and linear and the other looks jagged as hell. Smoothing took the reading, which was jagged, and flattened it out. Keep in mind that the adjustments have been made to both the before and after plots.

I also found an interesting post on a Harley forum by a guy called "BaggerDad" on how dyno graphs work. Everyone should take a few minutes to read this:

http://www.v-twinforum.com/forums/dyno-arc...ear-vs-5th.html

I don't think this says one thing or another about the dynos we've seen, it just helps us understand them more.

 

Smoothing is one thing, the actual difference between stock and header compared to the ebay one is what's the issue.

It claims to make more hp then stock across the board, while this one loses some in the low end, but makes it up in the mid-top end

 

Which was the reason for the last sentence in the post you quoted... I've quoted myself for added effect.

I just thought it was an interesting read and would give some information about dynos. It provided information on how dynos can be manipulated, how they are used too often to sell aftermarket products, and what we can all keep an eye out for. I am in no way implying that either of these particular graphs are true or false.

FWIW, I agree that the 2 dynos posted do not appear to be the same and would love to see independent results.

 

After 1 tank of gas

 

^ that looks pretty sweet!

 

nice pic of the ti coating being used