FierceSpeed

Hello All!

We're in search for a few people willing to review some Agency Power headers (cat-less and catted) as well as an electronically controlled sound control exhaust. In exchange for a review we can offer a discount. Please note the discount will not be drastic, but if you're in the market for any of these items you might as well get these! PLEASE PM US IF YOU'RE INTERESTED!


Agency Power Electronic Valve Controlled Exhaust BMW E60 M5 05+

Agency Power set out to produce the best exhaust system to appeal to the entire market. The solution is simple, create a high performance, quality built product with variable exhaust sound and performance. That is w HERE this electronic valve controlled system thrives. The Agency Power valve controlled exhaust gives the user the ability to control the performance and sound of the exhaust with the push of a button.

Valves mounted near the muffler allow exhaust gases to either pass straight through for performance and a louder sound or be diverted into the muffler for a quieter sound. Constructed with 304 stainless steel and tig welded ensures a quality fit and durability that is an Agency Power standard with the added advantage of reducing the weight by 37lbs.

Capable of producing ~40 whp with supporting mods, the Agency Power electronic valve controlled exhaust is a must for both the street and the track.

Included:

Muffler with Valve System
Mid Pipes
Electronic Control Box
2 Remotes
Vacuum Lines
Clamps and Gaskets
http://vrechise.com/getimage.php?i=a...70-muffler.jpg
http://vrechise.com/getimage.php?i=a...0-midpipes.jpg
http://vrechise.com/getimage.php?i=A...ntrol_unit.jpg
http://vrechise.com/getimage.php?i=apm5exhaust12.jpg

Agency Power High Flow Cat Headers BMW E60 M5 E63 M6 05+

One of the best ways to increase performance is with high flow cat headers. The stock M5 and M6 headers are small diameter and restrictive which robs your car of horsepower. Agency Power has released a performance header that utilizes high flow cats and larger diameter pipes. This combination allows the exhaust to travel into the rest of the system much faster and carry more heat away from the engine.

Constructed of 304 stainless steel and mandrel bends, the Agency Power header is among the best performing on the market. When coupled with supporting mods, the Agency Power High Flow Cat headers are capable of producing upwards of 50whp. Another great advantage to the Agency Power high flow cat headers is the weight reduction they offer, a difference of 10lbs.

No check engine light will occur and no ECU modifications are needed.

Gaskets are not included and are available for an additional fee.
http://vrechise.com/getimage.php?i=a...75-headers.jpg
http://vrechise.com/getimage.php?i=a...installed1.jpg
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Agency Power High Flow Catless Headers BMW E60 M5 E63 M6 05+

One of the best ways to increase performance is with catless headers. The stock M5 and M6 headers are small diameter and restrictive which robs your car of horsepower. Agency Power has released a performance header that utilizes high flow catless design and larger diameter pipes. This combination allows the exhaust to travel into the rest of the system much faster and carry more heat away from the engine.

Constructed of 304 stainless steel and mandrel bends, the Agency Power header is among the best performing on the market. When coupled with supporting mods, the Agency Power High Flow Catless headers are capable of producing upwards of 50whp. Another great advantage to the Agency Power high flow cat headers is the weight reduction they offer, a difference of 10lbs.

No check engine light will occur and no ECU modifications are needed.

Gaskets are not included and are available for an additional fee.

http://vrechise.com/getimage.php?i=ap-E63M6-175.jpg
http://vrechise.com/getimage.php?i=ap-E63M6-1751.jpg
http://vrechise.com/getimage.php?i=a...installed1.jpg

EuroCarFan

A member on M5Board already tried out the exhaust and went to get dynos before and after. His results showed about a 12whp gain with the valves opened but up to a 70whp loss with it closed. That's not a typo. All AP had to offer as far as explanation was that the closed valve gives the customer an option to quiet down their exhaust but couldn't justify why it was such a huge decrease in power.

Here's the thread: http://www.m5board.com/vbulletin/e60...r-exhaust.html

tonymac

EuroCarFan

And here are three vids of an RPI M5 racing against a Dinan/Agency Power M5.

The RPI M5 has RPI headers, GT exhaust (sections 1-3), pulley, ram air scoops, BMC filters, stock tune. The Dinan/Agency Power car has Dinan throttle bodies, Dinan intakes with high flow MAFs, Dinan diff, Dinan stage 3 tune, pulley, ram air scoops, AP headers, Dinan section 3 exhaust (stock sections 1 and 2). The RPI car had 3 passengers while the Dinan/AP car only had 2. RPI car is the camera car.

EuroCarFan

Another vid:

NobleForums

That's a bunch of video reviews, EuroCarFan. I think you just earned yourself a discount on a set.

EuroCarFan

I could use some metal sculptures to decorate my house.

laidback

Great video's, Dang thats alot of Power mods on that other E60 M5... Did he have cats on the Agency power headers? (we all know that running catless on the V10's make significant power) Did he have Dinan tune his car for the headers? with that many aftermarket parts i wonder if everything works together to make power...From experience everything has to work in unison, does not matter if you put alot of parts together IF their not compatible with each other then problem such as loss of power will arise...

EuroCarFan

I forgot if he had the catted or decatted headers but I know he had the Dinan stage 3 tune. I also agree that mix and matching products is not a good idea.

EuroCarFan

I checked and it was catted headers on Jed's M5 but if you look at AP's claims, they're still saying 50whp "with supporting mods" for both catted and catless headers.