Aston Martin V12 Vantage, DB9, DBS, Virage & Vanquish 310 Exhaust Manifolds / Headers Stainless Steel

The Original manifolds include 4 large and extremely restrictive catalyst bricks, as well as very unequal length
primary pipes. When the catalysts break down, due to the proximity of the OEM catalysts to the exhaust ports, some cars have been known to suck pieces of the catalyst matrix back into the engine, ruining the combustion chamber and damaging valves and valve seats. Result = an expensive engine repair.

In addition to millimeter perfect equal length primary runners, the Velocity Aston Martin V12 manifolds /
headers also feature a fully fabricated merge collector, not a formed/pressed collector which is cheaper, but robs vital power as it
does not merge all of the exhaust gas flows equally. See product?s photos to see the knife-edged internal structure, and the level of
workmanship and attention to detail that is put into every set of Aston Martin Exhaust Manifolds we produce.

These manifolds / headers were independently performance tested on a Dyno Dynamics rolling road, along with our 200 cell sports catalysts, performance exhaust system and ECU Tune. Known the world over for being the most accurate and consistent dynos, Dyno Dynamics are also known as ?The Heartbreaker? because they are notorious for their low-readings. Our customer?s car produced baseline peak performance figures of 409.328 HP, and 398.207
ft/lbs of torque. Following the installation of our manifolds, sports catalysts, exhaust system & ECU Tune, the peak figures were raise to
454.482BHP and 438.438ft.lbs. A gain of 45BHP (11.03%) and 40.5ft/lbs (10.17%)

Given that Dyno Dynamics are notorious for giving low< readings, it is important to recognize that these dyno results actually represent greater gains than they would initially suggest. The manufacturer?s stated output for the 2005 DB9 test subject Vantage is 450BHP & 440ft/lbs. A 11.03% & 10.17% increase over these
figure would represent gains of 49.63BHP and 44.75ft/lbs.

HP and torque have been improved across the RPM range, leading our test driver (who has plenty of single seater race time under his belt) to say ?Definitely need the Traction Control ON!? This DB9, with nearly as much HP as a DBS and an additional 64.75ft/lbs of torque, is now much quicker than a DBS under real world driving conditions.

Similar results can be expected on the V12V, DBS, Virage, Vanquish and later MY DB9