I have an intake manifold for an N55 that I built out and adapted for the M54 but took it off as I was diagnosing why it won't start, in case I had the injector angle wrong or something else. I have the injectors up high instead of right at the valve input, and a 45 degree angle instead of the stock 30 degrees. It's irrelevant at the moment though since I tried to make it as stock like as possible to help diagnose things.

The head porting just opens up airflow and shouldn't affect starting, correct? That's something I can't reverse (and I spent 2 weeks doing it)

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Donald Foss
2003 E53 3.0i, 5L40e (for now)
- self-rebuilt engine, valves, SL oil pump
- ported heads, both sides
- N55 intake manifold, 70 lb injectors
- GTX 2860R-clone 60mm top-mounted turbo
- progressive slip diff
- under chassis cats
- extra sensors wired to Arduino
- 15" touch screen dash-mounted