Step back in time with us as we pit the iconic 2007-2012 BMW 335i N54 against the new age 2016+ 340i and 440i B58. This is a classic David vs Goliath matchup as we put these engines head-to-head to see which one comes out on top. Will the N54's legendary tuning potential be enough to beat out the B58's modern technology? Tune in to find out!

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Tags: N54 injector, misfire, replacement, service, precisionfuel injectors, kelowna, cleaning, ultrasonic, piezo, gas, index 1