Vauxhall / Opel Vectra 1.9 cdti 150 SRi with excessive black smoke problem. We test out and review Wynns Stop Smoke treatment for petrol or diesel engines.
DO AWAY WITH THESE BULLSHIT UNRELIABLE SWIRL FLAPS. No or little Boost? very low power? smells in Car, smoky Exhaust? all may be caused by these .

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Car has recently had a new DPF fitted, EGR valve replaced. DPF regen (coil) light constantly flashes and smoke comes from exhaust.