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.
Trusted by the Best in BMW Performance
Shop parts directly from our affiliate partners — every link supports Build Guild.
Built for Serious Machines
From bolt-ons to full engine builds — we cover every platform that matters.
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.
Three Steps to a Sorted Build
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.
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.
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.
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.
Start planning — no cost.
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
Guild AI — your first-pass build advisor.
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.
Advanced AI that builds with you.
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.
No credit card required for Club membership. Pro and VIP can be cancelled anytime — you retain access until the end of your billing period.
Frequently Asked Questions
Common questions before you start building.