Build Guild
Build Guild
Compatibility-first performance planning
BMW Performance Build Platform

Plan It Right. Build It Once.

Plan your BMW build from power goal to complete parts list. Know what's compatible, the right install order, and what it'll actually cost — before you spend a dollar.

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Parts Cataloged
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Free Core Tools
Official Partners

Trusted by the Best in BMW Performance

Shop parts directly from our affiliate partners — every link supports Build Guild.

The Builds

Built for Serious Machines

From bolt-ons to full engine builds — we cover every platform that matters.

Custom Builds
Custom Builds
Engine Internals
Engine Internals
Tooling
Tooling
Interior
Interior
The Community
The Community
Transmission
Transmission
Platform

Everything You Need to Build Right

From your first mod to four-digit builds — structured guidance at every stage.

Build Planner

Select your engine + power goal. Get a sorted parts list with install order, compatibility notes, and cost estimates.

Guild AI

AI assistant with deep BMW platform knowledge. From requirements checking to full custom build lists.

Build Intel

Engine-specific workflows, version differences, lesser-known compatibility rules, and power ceiling data.

Compatibility First

Every recommendation is cross-checked against known issues. No guesswork, no wasted parts, no blown motors.

Guild Hall

Post your build, get feedback, vote on others. Filter by engine, WHP, fuel type, and validated builds.

Cost Estimator

Ballpark your build before committing. See estimated cost ranges by power tier and engine platform.

Shop & Compare

Browse parts from multiple vendors in one place. PRO members see prices side-by-side — no more tab-hopping across sites.

How It Works

Three Steps to a Sorted Build

01

Pick Your Engine & Goal

Select your engine platform and target WHP. The system loads the right compatibility rules, supported power tiers, and known issues for your setup.

02

Review Your Build Plan

Get a sequenced parts list with install order, compatibility notes, cost estimates, and flags for common mistakes builders make at each tier.

03

Build with Confidence

Order exactly what you need. No wasted parts, no blown motors from skipped supporting mods. Use Guild AI for deeper guidance if needed.

Membership

Build for Free. Upgrade for AI.

The full planning toolkit is free. Pro and VIP unlock Guild AI — from requirements checking all the way to custom build lists and step-by-step guidance.* Pricing subject to change as new features are added.

Club Member

Start planning — no cost.

Freejust sign up

Create an account and get immediate access to the full Build Planner, Quick Cost Estimator, power tier guides, engine compatibility charts, and the community forum.

  • Full Build Planner (all engines)
  • Quick Cost Estimator
  • Power tier & engine guides
  • Parts compatibility reference
  • Community forum access
  • Build Intel workflows & datalog library
  • DIY install guides
  • Build plan PDF export
  • Part reviews & failure reports
  • 3 garage vehicle slots
Join Free
Most Popular
Pro

Guild AI — your first-pass build advisor.

$5/ month

Unlock the basic Guild AI assistant. Ask it about platform requirements, supporting mod compatibility, and common failure points for your engine. Great for validating a build direction before committing.

  • Everything in Club Member
  • Guild AI — basic build assistant
  • 150 AI queries / month
  • Shop price comparison across all vendors
  • Requirements by power goal
  • Compatibility issue detection
  • Common failure point alerts
  • PRO badge on community posts
  • Interactive datalog graph viewer
  • Build challenges & community voting
  • Early access to news (48h before free)
  • Member directory & friend system
  • 5 garage vehicle slots

Basic AI tells you what your build needs and flags compatibility issues — it won't generate a specific parts list. Think of it as a knowledgeable friend who knows the platform well.

Go Pro
Full AI Suite
VIP

Advanced AI that builds with you.

$10/ month

The VIP AI generates full build forms and ordered parts lists tailored to your goal, diagnoses hard-to-trace issues, and acts as an ongoing advisor — step by step, as your build evolves. VIP members also get access to the exclusive Build Guild Discord. Outcomes depend on the accuracy of what you provide.

  • Everything in Pro
  • Advanced Guild AI advisor
  • 200 AI queries / month
  • Smart model routing (advanced AI for build plans & datalogs)
  • Full custom build lists & forms
  • Difficult issue diagnostics
  • Step-by-step build guidance
  • VIP badge + amber post highlighting
  • AI-assisted datalog analysis
  • AI build plan print/export
  • 10 garage vehicle slots
  • Exclusive VIP Discord access

VIP AI is an advisor, not a guarantee. Build outcomes depend on the detail and accuracy of your input. The more you share, the more specific and useful the guidance.

Go VIP

No credit card required for Club membership. Pro and VIP can be cancelled anytime — you retain access until the end of your billing period.

FAQ

Frequently Asked Questions

Common questions before you start building.

Build Guild
Compatibility-first performance planning for BMW enthusiasts. Structured build guidance from stock baseline to four-digit builds.
Platform
Supported Engines
  • N54 — Twin-turbo I6
  • N55 / N20 — Twin-scroll I6 / Turbo I4
  • B58 / B48 / B46 — Twin-scroll I6 / Turbo I4
  • S55 — Twin-turbo M I6
  • S58 — Twin-turbo M I6
  • N63 / S63 — Twin-turbo V8
Contact
Partnership inquiries welcome.
Disclaimer: Build Guild Club provides general planning guidance only. Higher-power builds require many supporting parts not individually listed in this tool. Always verify compatibility with a qualified tuner before purchasing parts or making modifications. Build Guild LLC is not responsible for damage, mechanical failure, or injury resulting from modifications made in reliance on this tool.
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