The Downpipe set without a catalytic converter (decat) for the Alfa Romeo Giulia 2.9 turbo Quadrifoglio and Stelvio 2.9 turbo Q4 replaces the original downpipes of the V6 biturbo engine and delivers maximum gas flow. Manufactured from high-quality stainless steel, suitable for models with a high-pressure EGR system. The set includes two downpipes (left and right).
Features
- Manufactured from high-quality stainless steel for maximum durability and corrosion resistance
- Designed without a catalytic converter for maximum gas flow in the V6 biturbo engine (510 PK)
- Fitted with 2 lambda ports per pipe for correct connection of the lambda sensors
- Set of 2 downpipes (left and right) for the full V6 biturbo configuration
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Suitable for models with a high-pressure EGR system
Technical specifications
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Material:
stainless steel
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catalytic converter:
None (decat)
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Lambda ports:
2 per pipe
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Pipe diameter:
76 mm
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Engine-side diameter:
71 mm
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exhaust-side diameter:
65 mm
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Suitable for:
Alfa Romeo Giulia 952 2.9 turbo Quadrifoglio (510 PK) and Stelvio 949 2.9 turbo Q4
Contents of the set
- Left-hand Downpipe without catalytic converter
- fitting kit
- Installation instructions
Frequently asked questions
Is an ECU remap required after fitting?
Yes, following installation, the engine software must be remapped to suppress fault codes and ensure optimal engine calibration.
Does the set include downpipes for both turbos?
Yes, the set includes two downpipes (left and right) for the full V6 biturbo configuration of the Quadrifoglio and Stelvio Q4.
Are the lambda sensors reusable?
Yes, each pipe has two lambda ports, so the original sensors can be refitted.
