APR · New
APR 15-20 Audi A3 Quattro/S3/15-19 Volkswagen Golf R/GTI EA888.3 (8V/MK7) 2.0T Port Injection System
MPN MS100229 · Store SKU aprMS100229
Supplier stock checked 11/7/2026, 5:46:42 PM UTC. Adding a part does not reserve it.
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Product details
The MPI System is the hardware half of APR's Stage 3+ ecosystem, required alongside matching APR ECU/TCU software to unlock true Stage 3+ output. If you're already running APR Stage 3 software and looking to add the fueling capacity to go further, or building a custom Stage 3+ setup piece by piece, this is the component that makes it possible. Compatible across the EA888 Gen 3 (Audi 8V/8Y A3, S3, TT, TTS, Q3; VW Mk7/Mk7.5 Golf R, GTI, Arteon, Jetta) and EA888 Gen 4 (2022+ Mk8 Golf R, Audi S3) platforms. Real Stage 3+ power lives or dies on fuel delivery, and the APR Multi-Port Injection (MPI) System is the difference between a turbo that flows and an engine that starves. Built around four Bosch Motorsport EV14 980cc/min injectors, this system supplements the factory direct-injection fuel system with high-flow port injection, delivering the fuel volume needed to safely support Stage 3+ boost, E85, and M100 calibrations that the stock fuel system simply can't keep up with. Every component is engineered to bolt in clean: an APR-matched Bosch Jetronic-to-OEM harness, OEM-style fuel rail and rail sensor, APR fuel distribution block, and all mounting hardware are included, so the system installs onto the factory intake manifold without any custom fabrication. Bosch Motorsport 980cc MPI injectors, fuel rail, harness & distribution block. Fits Audi A3/S3/TT/TTS/Q3, VW Golf R/GTI/Arteon/Jetta (EA888 Gen 3), and 2022-24 Mk8 Golf R & Audi S3 (EA888 Gen 4). APR Multi-Port Injection (MPI) System (EA888 Gen 3 & Gen 4)
Manufacturer fitment & guides
Check MS100229 against the manufacturer’s application information below.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
