Dinan S1 M4 Review by The Smoking Tire

The BMW M4 is a perfectly lovely machine. In stock form, its 3.0-liter, six-cylinder, twin-turboed engine makes 425 horsepower and 406 foot-pounds of torque.
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Concerned that your BMW M4 is not aggressive or noticeable enough? Next time, order it from the factory slathered in Sakhir Orange, a color that resembles liquid fire, and then send it to Dinan—a BMW sanctioned aftermarket tuner based in CA—for the $8,755 exterior upgrade package, which includes the meanest set of black matte, 20” […]
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OPELIKA, AL. (March 29th, 2021) - Dinan is pleased to be able to announce a new product offering being added into the catalog; the Dinan Stage 1 (& Plus) Performance Engine Software for the BMW B58(O1) engine. Experience the Dinan difference today and never look back!
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Dinan B58(O1) performance engine software may cause euphoria induced mental lapses manifesting itself into behavior synonymous with a younger self. With Stage 1 boasting jaw dropping maximum gains up to +116 WHP and +136 lb-ft on E85 and normal pump gas (93) generating gains of +55 WHP and +66 lb-ft of torque with no other modifications, it's easy to see why.
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