Forge Competition Dump Valve
Competition blow-off dump valve. Single piston suitable for all turbocharged cars WITHOUT an air flow meter. Made from billet aluminium with a 25mm inlet and 3mm vacuum trigger. Available in polished or black finish.
This atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
This product is compatible with the following vehicles
| Vehicle Make | Vehicle Model | Vehicle Variant | From | To | Engine | Notes |
| Lancia | Delta | 1980 | 1984 | 831A1.000 | 1.5L - FWD Petrol | |
| Lancia | Delta | 1980 | 1984 | 831B1.000 | 1.5L - FWD Petrol | |
| Lancia | Delta | GT | 1983 | 1986 | 831A4.000 | 1.6L - FWD Petrol |
| Lancia | Delta | 1983 | 1991 | 831A2.000 | 1.3L - FWD Petrol | |
| Lancia | Delta | 1983 | 1991 | 831B.000 | 1.3L - FWD Petrol | |
| Lancia | Delta | HF Turbo | 1984 | 1986 | 831A7.000 | 1.6L - FWD Petrol |
| Lancia | Delta | GT | 1986 | 1991 | 831B7.000 | 1.6L GTie - FWD Petrol |
| Lancia | Delta | HF Turbo | 1986 | 1991 | 831B3.000 | 1.6L ie - FWD Petrol |
| Lancia | Delta | HF Turbo | 1987 | 1988 | 831B5.000 | 2.0L - 4WD Petrol |
| Lancia | Delta | HF Integrale | 1988 | 1989 | 831C5.000 | 2.0L - 4WD Petrol |
| Lancia | Delta | HF Integrale | 1989 | 1994 | 831D5.000 | 2.0L - 4WD Petrol |
| Lancia | Delta | HF Integrale | 1993 | 1994 | 831E5.046 | 2.0L Evoluzione - 4WD Petrol |
| Lancia | Delta | HF Integrale | 1993 | 1994 | 831E5.000 | 2.0L Evoluzione - 4WD Petrol |
er the last fifteen years Forge Motorsport have grown in to one of the UK's premier manufacturers of products and accessories for race, competition and road vehicles. When you purchase from Forge Motorsport you are assured of quality products and a service to match. If you require a particular product that is not listed in this catalogue or on the web site, please call or email and we will gladly assist with any queries.
All Forge products are guaranteed for life with the Forge "No Hassle" service promise.
