Stainless Steel Headers for M156 - 63 AMG Engines mercedes-benz-s-class--222---2018-2020--s-63-amg-biturbo-esr3217492 ECU+ Upgrade | Up to

ECU+ Upgrade | Up to 731 HP / 786 LB-FT | Gains: +88 HP & +65 LB-FT

Attention:

This allows us the ability to maximize the amount of friction materials contained within the transmission and in turn

3 Series CABRIOLET (E93) 330 d/Xd 3

CLASS E (W 211) 240 V6 4-matic [2 Filters Required] (HP: 177 | Year: 03 > 05)

Stainless Steel Headers for M156 - 63 AMG Engines mercedes-benz-s-class--222---2018-2020--s-63-amg-biturbo-esr3217492 ECU+ Upgrade | Up toRENNtech Stainless Steeel Exhaust Headers for M156 63 AMG Engines. Gaines: +11HP & 20TQ RENNTECH stainless steel and ceramic coated exhaust headers offer true bolt on installation, mounting directly to the OE down pipes and all RENNTECH headers are hand built from mandrel bent, seamless tubing and CNC machined stainless flanges. Advanced computer aided design (CAD) and flow analysis software allows RENNTECH headers to deliver substantial gains across