Colby Truex

Self-taught developer and hands-on car guy in Dallas, headed for mechanical engineering.

I build and repair my own cars: a 2008 Mk5 GTI and a 2016 Camry sleeper.

I build and self-host my own software, including a chat client that starts answering in about 40 ms.

I play competitive tennis for my school team and in UTR tournaments.

Automotive

Two cars I diagnose, repair and modify myself. The GTI is the project. The Camry is the sleeper.

Line drawing of a 2008 Volkswagen GTI from the side

2008 Volkswagen GTI

Mk5, 2.0 L turbo FSI, six-speed manual, high mileage.

Engine

engine
2.0 L turbocharged FSI inline-four
intake
Aftermarket intake
ignition
Upgraded ignition coils, a common failure point on this engine
ecu
Stock, with an Integrated Engineering Stage 1 tune planned

Turbo plan

approach
Turbo, fueling and intercooling chosen as one package instead of a nitrous shortcut
target
About 320 hp and 350 lb-ft
status
Planned

Shifter

gearbox
Six-speed manual
shifter
DieselGeek Shifter Deluxe Pack
why
A tighter, more precise shift
status
Installed

Tires and traction

tires
Michelin Pilot Sport 5
explored
AWD and RWD conversion ideas
decision
Traction first. Power the front tires can actually use beats a bigger peak number.

Weight reduction

status
Done
why
Less mass helps everything at once: acceleration, braking and turn-in.

Stock vs target

Drag the slider to compare the two at any rpm.

Power and torque curves, stock versus the turbo-build target, from 1,500 to 6,800 rpm
5,600 rpm
Output at the selected engine speed
Measurestocktargetgain
power hp200320+120
torque lb-ft188300+112

Stock is Volkswagen’s published 200 hp and 207 lb-ft. Target is modeled from the 320 hp and 350 lb-ft goal for the turbo build, not a dyno sheet.

Build log

Bought the GTI

2008 GTI with the six-speed manual and high miles.

DieselGeek Shifter Deluxe Pack

A tighter, more precise shift for the six-speed.

Michelin Pilot Sport 5 tires

Grip first. Tires are the cheapest traction upgrade there is, and everything else builds on them.

Intake and ignition coils

An aftermarket intake, plus upgraded ignition coils. Coil packs are a common failure point on the 2.0T FSI.

Weight reduction

Took weight out of the car. Less mass helps acceleration, braking and turn-in all at once.

AWD, RWD, or traction?

Looked hard at AWD and RWD conversions and weighed nitrous. Chose traction and a coherent turbo setup instead: parts that work together, and power the front tires can put down.

Stage 1 tune, then the turbo package

An Integrated Engineering Stage 1 tune, then turbo, fueling and intercooling planned as one package, aimed at roughly 320 hp and 350 lb-ft.

2016 Toyota Camry LE

The sleeper. The 2.5 L 2AR-FE looks and runs stock, and inside is a 10-speaker custom audio system I set up myself. Power goals, through ECU tuning, stay reliability-first.

stock power178hp
stock torque170lb-ft
audio10speakers
priorityreliability

Repair work

  • EVAP diagnosis

    Tracing evaporative emissions faults from the code to the part that is actually leaking.

  • A/C work

    Diagnosing and repairing air conditioning, which matters in a Dallas summer.

  • Walnut blasting

    Cleaning carbon off direct-injection intake valves.

  • Scan-tool diagnostics

    Reading live data and codes before buying a single part.

Simulation

I recreated Volkswagen’s EA888 turbo four in Automation, the engine-design sim, and I spend plenty of time in Forza.

Software

Things I’ve built and run myself, on hardware I manage.

Tachyon

A lightweight multi-lane chat client: a local Qwen model on my RTX 4090 and DeepSeek V4.1 in the cloud. It routes each message to the right lane, keeps long-term memory in SQLite, and has a SwiftUI iOS app.

  • local qwen
  • deepseek v4.1

Measured September 21, 2026 on the RTX 4090: 40.1 to 43.6 ms from request to first streamed token, four warm runs, full server path. Routing decisions take under 10 ms.

42ms to first tokentarget under 100 ms

Tachyon Code

A terminal coding agent. It runs on your own machine, reads, edits and searches files, and runs commands, asking before every edit or command. Tachyon is only its model gateway: an OpenAI-compatible API that holds the keys, picks the lane and enforces each user’s daily budget.

  • plan mode
  • subagents
  • hooks
  • rewind

Your PC

  • agent loop
  • read, edit, grep, run
  • asks before changes

files and commands stay here

Tachyon server

  • /v1/chat/completions
  • API keys and lanes
  • budgets and usage

only model calls happen here

Tachyon Code runs tools on the user’s own PC and sends only model calls to the Tachyon server over HTTPS with a personal API key.

Aegis

A Jarvis-style personal assistant that lives in Telegram, built on Hermes. It remembers context between conversations, runs automations, and has a routing-debug mode that shows how each request was handled.

  1. inTelegram message
  2. routeRouter picks a path
  3. recallMemory adds context
  4. actAutomation or model runs
  5. debugTrace of the path taken
  6. outReply in Telegram

Self-hosting

I run my own hosting under truexsystems.com: a VPS running Node, and my RTX 4090 machine serving Tachyon and its local model through Cloudflare Tunnel, behind Cloudflare Access. Smaller builds live there too, like a Christmas gift-list site I coded.

VPS
Node
Cloudflare Tunnel
project sites
RTX 4090 box
llama-server
local Qwen
Tachyon

Tennis

Competitive play on my school team and in UTR-rated tournaments.

5utr rating
lineup spot#6singles
best lineup spot#4singles

Experience and education

Nov 2025 to Sep 2026, 10 months

Studio Movie Grill

Runner, Turn Close

As a runner, I got food and drinks to guests in the theater during showings. On turn-close shifts I reset auditoriums between shows and closed out at the end of the night.

current

High school

Aiming for mechanical engineering

UT Austin is the target. Most of what I know about software and cars so far is self-taught, from shop manuals, forums, datasheets and a lot of trial and error.

Contact

Questions about a build, a project, or an opening? Reach me here.

email
colby.j.truex@gmail.com
github
github.com/truexcoin
based in
Dallas, Texas