![]() We were so excited to install our tunes and a few bolt-ons, only to go out for the first drive with an engine that was running poorly. Jake and I talk about spark plugs and ignition coils a lot as we both experienced the same thing on our N54 engines. The newfound power requires a stronger spark to ignite the increased air/fuel mixture, and old, worn, or faulty spark plugs and coils cannot generate enough of a spark to fully burn the air and fuel. Two of the most common problems that pop up when tuning your BMW engine are spark plugs and ignition coils. Before Tuning Your N20: Spark Plugs and Ignition CoilsĪdding power to any engine typically brings forth issues that go un-noticed when the car is in stock form. A tune and a few basic mods, all for under $1,500, can boost the N20’s power and torque into the 350 range. Dyno results place the actual numbers in the ballpark of 275hp and 290tq. In stock form, the N20 was quoted right around 240hp and 258tq, however, independent testing in the real world shows the engine is stouter than BMW suggests. Although the N20 is not the strongest motor there is still plenty of power to be unleashed with a tune and basic bolt-ons. BMW’s N20 engine featured in the 228i, 328i, 428i, 528i, as well as other 28i variants, did not built up the greatest aftermarket and tuning reputation, as the engine has been touted as fragile. ![]()
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