bmwn54tuners.com
How-To Build a 500HP 135i, 335i, 535i N54 BMW for Less Than $1,500
Want to Build a 500hp N54? Easy. The BMW N54 engine featured in the 135i, 335i, and 535i is one of the most tune-able engines ever. Some people call it the '2JZ' of German engines, but we think the N54 is on a whole new level. The N54 engine has forged internals, meaning it can handle