// for every car owner

Your car's history lives in too many places.

The service receipt in the glovebox. The mileage scribbled in your phone notes. The reminder you set and ignored. Wrench puts your car's full history in one place.

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The old way

AUTOXPRESS NAIROBI
Engine Oil 5W30..KSh 3,500
Labour...........KSh 1,500
TOTAL............KSh 5,000
14/03/25

PENALTY NOTICE
NTSA expired
— KSh 10,000

check brakes??
~130k kms maybe

KINGSWAY TYRES
Tyres x2........KSh 18,000
Fitting..........KSh 2,000
02/11/24

NTSA INSPECTION
CERTIFICATE
Expiry: 09/01/25

ask mwangi about the noise

Your car's history. Somewhere in here.

With Wrench

2019 BMW X3 · 132,400 km

●Oil change · 14 Mar 25 · KSh 5,000

●Tyres (x2) · 02 Nov 24 · KSh 20,000

●Insurance · Expires in 3 weeks

Rex

Your insurance is expires in 3 weeks. Also, that note about brakes at 130K? You're at 132,400 now. Worth checking both at the same visit.

Book Garage →

Your car's history. Right here.

For builders →

// for every car builder

You should not need five browser tabs to fix your own car.

The forum thread from 2019. The YouTube video that skips the part you need. Wrench gives you an AI crew chief who already knows your specific build.

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The old way

torque specs??
coilover top mount - 35nm? CHECK THIS
ask on discord

MISFIRE STILL NOT FIXED
3rd part ordered, still guessing

forums.z1motorsports.com/threads/vq35...

VQ35DE misfire under boost — HELP

turbospool_z: check ur MAF sensor
350zfanatic: no its plugs 100%
boostednissan: could be injectors tbh

47 replies

speedshopnairobi.co.ke/order-8847

Speed Shop Nairobi — Order

JWT intake......KSh 45,000
BC Coilovers...KSh 105,000
Shipping.........KSh 5,000

TOTAL..........KSh 155,000

dynotunenairobi.co.ke/contact

DYNO TUNE NAIROBI

Ask for Njoroge — boost issues

Book a slot

Your build knowledge. Scattered everywhere.

With Wrench

2003 Nissan 350Z · VQ35DE · Stage 2

●JWT intake · installed · confirmed

●BC Coilovers · installed · confirmed

●Boost tune · Stage 2 · logged

Rex

With your JWT intake and Stage 2 tune, misfires above 12psi are almost always MAF calibration. But you're at 87K and haven't logged new plugs since the tune — VQ35s are sensitive here. Start with plugs before spending more on parts.

Log plugs →

⚡ Answered in 4 seconds

Your build knowledge. One place. Instantly.

// what wrench does

Every modification, logged.

The parts, the cost, the date, the photo. Your car's full history, not your memory of it.

Every build stage, tracked.

Plan the work. Track the costs. Know exactly what is done and what is next.

Every service record, in one place.

Oil changes, brake flushes, tyre rotations. Never wonder when something was last done.

// MEET REX

It already knows your car.

Rex is your AI crew chief. It knows your car's specific build, and it knows how to help you get the work done.

Your BMW X3 hasn't had a coolant flush in 14 months.

Hover over Rex. Click to hear what he is thinking.

Rex knows when your last oil change was.

Rex noticed your Stage 2 has stalled.

Rex has opinions about your build order.

Early access. Limited availability.

// TRY IT NOW

Ask Rex anything about a project car.

No account needed, see what car-aware AI actually feels like.

Demo Car

2003 Nissan 350Z · 87,000 km · Daily driven. Track days on weekends.

Ask a question to start the conversation