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swap b25 b30
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  1. E46 XI
    Around November of last year I had a hole puncture through the #3 piston in my '02 325xi after overheating :( Though I've since acquired, rebuilt, and swapped in the 3.0L from a 330i I found on CL. Took a massive learning curve to realize what was different from i to xi, but I managed to get...
  2. E46 General
    Hello! I recently did a swap from b25 to b30. But since the first start the car have been running rough... in idle you can feel the multiple misfire and the fuel trims are super lean and rich, bank1 28% and bank2 -28%... and the long term fuel trim does not register anything :loco: This will...
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