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The 2.0 Diesel N47 Engine found in most of the E Series BMWs is very tuneable, but not as bullet proof as it's 3.0 cousin, as we found out a while back. Over the last few months we have been developing our upgrades for the N47 / N47N Engines found in the x16d / x18d Models. These have a Solenoid Type Injector that are very small, and struggles to do much over 200bhp without excessive smoke and Exhaust Gas Temperatures (EGTs) This Blog Post is specifically talking about the x16d / x18d N47 / …

Part 5 of our A5 BuildWe are now on to the Exhaust System. This is a common modification our customers do, both from a performance, aesthetic and acoustic perspective.A quick look at the stock exhaust, it is 65mm (~2.5") to 55mm (~2.15") and has 2 small boxes right at the back, but is still pretty quiet as the DPF is also a large silencer. It also has twin 3" Rolled Slash Cut Tips as standard. The standard grade of stainless is very poor and we see a lot of cars with rusty ex …