This do88 BigPack replaces everything between the turbo outlet and the throttle body on the 245 hp EA888 Gen4 with an all aluminum performance intercooler and a 2.5 inch mandrel bent charge pipe. Core volume climbs to 15811 cm3 from 9056 cm3, 75 percent more, with active cooling area of 2774 cm2 against 2587 cm2. do88 measured 332 CFM at 0.15 bar (2.18 psi) pressure drop against 244 CFM for the OE parts and a post intercooler air temperature of 23°C instead of 35°C under matched conditions. On a stock software VW Golf GTI Clubsport Edition 45 the package returned 12 hp and 14 Nm at peak. The charge pipe carries one 1/8-27 NPT connection for water/methanol injection with a blanking plug fitted, and the black silicone hoses use four layers of polyester and aramid reinforcement.
Specifications
| Type | All aluminum charge air intercooler and charge pipe kit (do88 BigPack) |
| Material | Aluminum core with CAD designed, flow optimized cast end tanks |
| Core Volume | 15811 cm³ (OE 9056 cm³), 75% larger |
| Active Cooling Area | 2774 cm² (OE 2587 cm²), 7% larger |
| Air Flow | 332 CFM at 0.15 bar / 2.18 psi pressure drop (OE 244 CFM), 36% higher |
| Intake Air Temperature | 23°C vs 35°C OE under matched conditions, 12°C lower |
| Power Gain | 12 hp and 14 Nm at peak, measured on a VW Golf GTI Clubsport Edition 45 with stock software |
| Charge Pipes | 2.5 in mandrel bent seamless aluminum |
| Water/Methanol Injection | One 1/8-27 NPT connection on the charge pipe, blanking plug supplied |
| Engine Output | For the 245 hp EA888 Gen4. A separate do88 kit covers 300 hp and above |
| Hose Color | Black |
| Hose Material | Silicone with 4 layers of polyester/aramid reinforcement |
| Included | Intercooler, charge pipe kit, silicone hoses, clamps and installation hardware |
| Quantity | 1 (complete kit) |
| OEM Replacement | 5Q0145803AE, 5Q0145803AB, 5Q0145803AC, 5WA145828E, 5WA145828F, 5WA145840D, 5WA145840E, 5WA145832, 5WA145832C, 5WA145834, 5WA145770D, 5WA145770C, 5WA145838 |
| Part Number | BIG-340-2-S |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020 | Volkswagen | Golf | GTI 2.0 TSI (Mk8, 245 hp) |
| 2021 | Volkswagen | Golf | GTI 2.0 TSI (Mk8, 245 hp) |
| 2022 | Volkswagen | Golf | GTI 2.0 TSI (Mk8, 245 hp) |
| 2023 | Volkswagen | Golf | GTI 2.0 TSI (Mk8, 245 hp) |
| 2024 | Volkswagen | Golf | GTI 2.0 TSI (Mk8, 245 hp) |
| 2025 | Volkswagen | Golf | GTI 2.0 TSI (Mk8, 245 hp) |
| 2026 | Volkswagen | Golf | GTI 2.0 TSI (Mk8, 245 hp) |
| 2020 | Audi | A3 | 2.0 TSI (8Y, 245 hp) |
| 2021 | Audi | A3 | 2.0 TSI (8Y, 245 hp) |
| 2022 | Audi | A3 | 2.0 TSI (8Y, 245 hp) |
| 2023 | Audi | A3 | 2.0 TSI (8Y, 245 hp) |
| 2024 | Audi | A3 | 2.0 TSI (8Y, 245 hp) |
| 2025 | Audi | A3 | 2.0 TSI (8Y, 245 hp) |
| 2026 | Audi | A3 | 2.0 TSI (8Y, 245 hp) |
| 2020 | Audi | S3 | 2.0 TSI (8Y, 245 hp) |
| 2021 | Audi | S3 | 2.0 TSI (8Y, 245 hp) |
| 2022 | Audi | S3 | 2.0 TSI (8Y, 245 hp) |
| 2023 | Audi | S3 | 2.0 TSI (8Y, 245 hp) |
| 2024 | Audi | S3 | 2.0 TSI (8Y, 245 hp) |
| 2025 | Audi | S3 | 2.0 TSI (8Y, 245 hp) |
| 2026 | Audi | S3 | 2.0 TSI (8Y, 245 hp) |
| 2020 | SEAT | Leon | 2.0 TSI (Mk4, 245 hp) |
| 2021 | SEAT | Leon | 2.0 TSI (Mk4, 245 hp) |
| 2022 | SEAT | Leon | 2.0 TSI (Mk4, 245 hp) |
| 2023 | SEAT | Leon | 2.0 TSI (Mk4, 245 hp) |
| 2024 | SEAT | Leon | 2.0 TSI (Mk4, 245 hp) |
| 2025 | SEAT | Leon | 2.0 TSI (Mk4, 245 hp) |
| 2026 | SEAT | Leon | 2.0 TSI (Mk4, 245 hp) |
| 2019 | Skoda | Octavia | 2.0 TSI (NX, 245 hp) |
| 2020 | Skoda | Octavia | 2.0 TSI (NX, 245 hp) |
| 2021 | Skoda | Octavia | 2.0 TSI (NX, 245 hp) |
| 2022 | Skoda | Octavia | 2.0 TSI (NX, 245 hp) |
| 2023 | Skoda | Octavia | 2.0 TSI (NX, 245 hp) |
| 2024 | Skoda | Octavia | 2.0 TSI (NX, 245 hp) |
| 2025 | Skoda | Octavia | 2.0 TSI (NX, 245 hp) |
| 2026 | Skoda | Octavia | 2.0 TSI (NX, 245 hp) |
| 2020 | Cupra | Formentor | 2.0 TSI (5FF, 245 hp) |
| 2021 | Cupra | Formentor | 2.0 TSI (5FF, 245 hp) |
| 2022 | Cupra | Formentor | 2.0 TSI (5FF, 245 hp) |
| 2023 | Cupra | Formentor | 2.0 TSI (5FF, 245 hp) |
| 2024 | Cupra | Formentor | 2.0 TSI (5FF, 245 hp) |
| 2025 | Cupra | Formentor | 2.0 TSI (5FF, 245 hp) |
| 2026 | Cupra | Formentor | 2.0 TSI (5FF, 245 hp) |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
