Prices incl. VAT plus shipping costs
Delivery time 15 Workdays
- Order number: HPA-HVA-252
Maximizing engine performance begins with engine thermal management. Turbo-charged applications generate an extreme amount of surface heat on the turbocharger, which radiates directly into the aluminum head and reduces the ability of the engine control unit to advance ignition and fuel cards due to the detonation. In addition to stringent global emissions standards that result in the installation of restrictive catalytic converters, OEM engineers must take into account the worldwide restrictions on minimum clearances for frontal impact crash test results when packaging and designing the factory turbo downpipes.
Each HPA downpipe was developed taking into account the emission requirements, the distances between heat radiation and the contact surface, and the engine control unit software framework. The calibrators control the hardware requirements to ensure that the dimensions and catalyst requirements are calibrated within the performance range of the control unit. The goal is to reduce the heat on the mounting surface of the turbocharger to the aluminum head. When the heat reduction equilibrium is reached, the calibrators can establish a fuel and ignition map that ensures that the exhaust gases are clean and boost levels can be raised. Heat is HP's enemy and even your inventory will benefit from a smoother exhaust gas design.
The average OEM downpipe diameter of 63 mm in conjunction with a restrictive catalytic converter and different angles does not allow ideal flow specifications and leads to a higher back pressure on the turbocharger, which forces it to work harder and generate excessive heat.
This HPA 3 inch downpipe is designed for functionality and durability and is manufactured in Canada. The stainless steel T304L mandrel with a wall thickness of .063 is precisely welded using the TIG process, and the argon back is cleaned to achieve a clean appearance on the outside and a perfectly clean weld seam on the inside. Our CNC-shaped hangers and laser-cut flanges connect this assembly to the chassis and withstand the thermal conditions that the turbo will create. Our flexible couplings have an internal stainless steel lock that enables smooth flow of high-temperature exhaust gases.
The HPA Street Downpipes are delivered as standard with our 100 Zeller High Flow-Kats, which are used in all HPA Twin Turbo high-performance vehicles.
T304L stainless steel
Full stainless steel construction
100 cell high flow metal catalyst
Reducer for original equipment
Argon backwashed TIG welded
Lower CNC cut and shaped lower hanger bracket
Interlocking, flat flex joint for stability at high EGT
The factory catalytic converter has been removed directly from the turbocharger to increase exhaust flow and reduce back pressure.
Factory 02 sensor placement
3/8 CNC laser cut turbo flange
AccuSeal band clamp made of stainless steel for attaching to the center tube
Significant weight savings
2009-16 A4 / Allroad (B8 & B8.5)
2008-16 A5 (B8 & B8.5)
2009-16 Q5 (8R)
Not allowed on public roads!
Important notice: This is an automatic translation. Please note that only the original german description is valid for a legally purchase agreement.