cbluerock

Agency Powers for $2500 - http://www.ignitionready.com/Agency-...AMG_p_147.html


It says back ordered, but it appears that I can order them...

Merc63

There is a guy selling MHP headers on here for the same price..

They are the best headers you can buy for the M156 IMO.

cbluerock

Thanks, I am on the fence between Agency, MHP, and MBH.

I have read through a majority of the header posts and header sticky. I am looking for new and trying to make the best choice. For me it's Dyno results first, then sound and quality.

It's interesting that MHB uses a 2" header, where everyone else uses a 1 7/8". I bet they make more power on the top-end?

Even my previous car, 2010 Z06 had ARH 1 7/8" LTs and was a 7.0 Liter, 427 ci motor.

CoolBDPhenom03

I've put over 8k miles on my Agency Power headers. So far, so good.

Merc63

There is more to headers than just the diameter.. There is so many aspects to the design if you take some time to read about them.. Exhaust velocity, pressure waves, collectors, etc.

I too looked at the MBH ones, but I just felt to me that the MHP were a better design. They are a quality piece too.

You will 1000% want to get an X pipe if you plan on removing all the cats.... It will help tone the rasp down for around town.

http://s1048.photobucket.com/albums/...t=IMG_1002.mp4


Thats mhp headers with an X pipe... IMO without X pipe they sound way too obnoxious.

bhamg

I know nothing about the Agency headers but you couldn't go wrong with either MHP or MBH headers. The interesting thing is that I've looked at a lot of dyno curves and there seems to be little difference between the long-tube MHP and the tri-y MBH header designs with respect to more-or-less low end vs. high end power...the shapes of the curves appear to be virtually identical.

cbluerock

Thanks guys, much appreciated...