The FD3S expert inside
your AI assistant.

Give Claude, ChatGPT, and any other AI assistant a real knowledgebase for the Mazda RX-7 FD3S. Factory service procedures, tuning references, and community build wisdom — not a generic guess.

How it works

Connect once, then ask anything — we do all of the research.

1

Connect

Add rx7db as an MCP server in Claude Code or any MCP client using your own Anthropic API key.

2

Ask

Describe your symptom, tuning question, build goal, or part you need — in plain language, with your car's mods if you like.

3

Get grounded answers

An internal research agent works the factory manual, tuning references, and current sources, and cites the diagrams that matter.

Multiple tools, one knowledgebase

A collection of authoritative sources of information on the RX7 FD, plus real-time access to the latest community discussions.

troubleshoot

Diagnose a symptom or malfunction and walk through the fix.

cooling

Overheating, temperature swings, and coolant loss — diagnosed before the engine pays for it.

wiring

Trace circuits, pinouts, and wire colors — with the actual diagram images.

vacuum

Trace the vacuum "rat's nest", test solenoids and actuators, diagnose the sequential turbos — with routing diagrams.

job_planner

Parts, tools, torques, and procedure for a job you're about to do.

tune

AFR targets, timing, ECU settings, and tuning symptoms.

turbo_sizing

Airflow and WHP math for turbo and boost combinations.

build_planner

Plan a modification sequence toward a target power level.

wheel_fitment

Check wheel offsets, tire sizes, and suspension, fender, and brake clearance.

find_parts

Locate OEM or aftermarket parts, with live stock lookups.

ask

Anything else — factory specs, maintenance, how systems work.

Real diagrams, not descriptions

When a wiring answer needs a diagram, you get the actual factory scan.

"My fuel pump isn't priming — where's the FPR relay in the harness?"

The wiring tool traces the circuit through the factory diagram and returns the relevant page, so you're looking at the real harness instead of a text description of it.

Factory wiring diagram excerpt, 94Z Wiring Diagram section