BMW 4 Series Tuning Data
Stage 1 estimates for 52 engine variants across 5 generations
Gains across the BMW 4 Series range
- +26 to +74 BHPacross 52 engines with recorded figures
- +74 BHPis the largest gain in the range — 440i 326hp (+135 Nm)
- 93%of the 9,842 engines we hold gain data for see a smaller increase than that
Comparisons are calculated from our own recorded Stage 1 figures.
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