Powertrain & Chassis Upgrades

What's inside

Indicative chapter list — final table of contents confirmed at publication.

1. Power first: understanding what each engine actually has in reserve
2. N52 naturally-aspirated: intake, headers, tuning — honest verdicts
3. N20 / N26: turbo, downpipe, tune — Stage 1 and beyond
4. N54 twin-turbo: the 600hp roadmap, one step at a time
5. N55 single-turbo: tuning ceilings and the bolt-on sweet spot
6. Fuelling: HPFP, port injection, water/methanol, E85
7. Cooling: charge-air, oil, transmission — track-proof setups
8. Transmission upgrades: clutches, flywheels, DCT tuning
9. Differential: locking, welding, LSD retrofits
10. Suspension: coilovers, adjustable geometry, bushings
11. Anti-roll bars and how to set a car up for road vs track
12. Brakes: pad compounds, discs, calipers — and the rear BBK project
13. Wheels & tyres for upgraded power and chassis
14. Mapping and dyno — interpreting results, avoiding marketing fantasy
15. Case studies: three real builds, costs, lessons, and lap-time deltas

Pricing

ISBN 978-1-918813-08-1. Published under Definitive Z4 Publishing. Launch date announced via the mailing list.