Freelance Performance Technician · Congleton

Teaching cars
and owners
to behave.

Straight-talking diagnostics, servicing and performance work from someone who actually explains what's wrong and what it'll cost. Modified, mapped, tracked or just tired — I'll take it on.

Priced before the spanners come out
Modified & performance specialist
Digital job sheets & photos

What I do

Performance work and everything that keeps a car honest.

Modified, mapped, tracked or just tired — I'll take it on. If it's outside what I can do properly, I'll tell you rather than have a guess at your expense.

Mapping — through a tuner I trust

I don't write maps myself. I work with a proper tuner and handle everything around it: the hardware, the fuelling, the fault-finding and getting it on the rollers.

Diagnostics & fault finding

Live data, scope work and proper testing — not a code reader and a parts cannon. You get the reading, the cause, and the fix.

Servicing

Interim, full and major services with the oil and filters your engine actually specs — not whatever's cheapest in the drum.

Brakes & suspension

Discs, pads, lines and fluid. Coilovers, springs, bushes, arms and geometry-aware setup for road or track.

Clutches & cambelts

Clutch and flywheel jobs, cambelt and chain replacement, water pumps and tensioners. Big jobs done once, done right.

Performance upgrades

Turbos, intercoolers, downpipes, exhausts, injectors, fuel systems, meth setups, intakes and big brake kits. Planned properly so the parts actually work together.

General repairs

Everything from a rattle you can't place to head gaskets. Modern and older stuff, petrol and diesel.

MOT prep & repairs

Pre-MOT check to catch the obvious fails first, and the repair work to clear anything that's already come back on a sheet.

Track & project prep

Pre-track checks, fluid and pad upgrades, build planning and honest advice on what's worth spending on next.

Who you're dealing with

One technician. Your car. No middleman.

I'm Lewis — a freelance automotive technician working out of my own workshop in Congleton. Over 10 years in the trade, most of it on modified and performance stuff, and I still post tech advice and build breakdowns to a few hundred people on Instagram because I'd rather owners understood their cars than got fleeced by them.

Booking with me means you speak to the person doing the work. No service advisor relaying a bad game of telephone, no "the computer says". You get photos, findings and a price before I pick up a spanner.

10+ yrsIn the trade
1:1You deal with me directly
ModifiedIs most of what I do

Follow @lewisthetec

The work

Cars I've built, worked on, and look after.

Not stock photos. Every one of these has been through my workshop.

Lewis's pink Mazda MX-5 doing a burnout in front of the crowd at Ultimate Street Car 2025, Santa Pod
My MX-5 on the burnout comp — Ultimate Street Car 2025, Santa Pod 📷 Max Pykett
Five Volkswagens lined up outside a workshop unit with bonnets open, all fitted with Audi RS3 2.5 TFSI engine conversions
Five in at once — every one an RS3 conversion, 550hp up to 1200hp-capable
Turbocharged Mazda MX-5 track car strapped down on a rolling road dyno
Turbo MX-5 track car on the rollers — one of a lot of them I look after
1500hp Nissan R35 GT-R engine with a custom Garrett turbo setup, fabricated in-house and sat on a stand
1500hp R35 GT-R build — custom Garrett setup, fabricated by me
Top Secret Nissan R35 GT-R on a two-post ramp having KW HLS4 hydraulic lift coilovers fitted
Top Secret R35 GT-R in for a KW HLS4 hydraulic lift kit
Lewis's pink Mazda MX-5 shooting flames at the flame-off competition at Santa Pod Raceway
My MX-5 at the flame-off, Santa Pod Raceway 📷 @dominics.optics
Three Bayside Blue Nissan Skyline R34 GT-Rs parked together outside the workshop
Bayside Blue R34 trio
FIA-spec Mitsubishi Evo rally car stripped to the shell with a large intercooler fitted
FIA-spec Evo rally build we put together — 600hp, 1100kg
Purple McLaren 720S parked outside the workshop
720S through the workshop — not my build, just a good day
Blue Audi R8 V10 Plus photographed from the rear in an underground car park
R8 V10 Plus — one we used to look after

More of it, more often, on @lewisthetec.

Book in

Request a booking.

Takes about a minute. Pop your reg in and I'll pull the vehicle details automatically. This is a request, not a confirmed slot — I'll come back to you to confirm the date and give you a price.

1 · Your vehicle
UK

I use the DVSA record to pull make, model and MOT history — saves you typing and tells me what I'm dealing with.

Please enter your registration.

2 · What's it in for

Pick at least one, or choose "Not sure".

A quick description helps me quote properly.

3 · Parts

Part numbers and where you bought them if you have them — I'll sanity-check the fitment before you're committed.

I warrant my labour, but not a part I didn't supply. If one fails, the refit is chargeable.

4 · Anything I should know
5 · When suits
6 · Your details

Please tell me your name.

A UK mobile or landline, please.

That email doesn't look right.

No payment now. I'll confirm the slot and the price before anything happens.

Questions

The stuff people ask.

How much will it cost?

You get a price before I start, and nothing happens until you've agreed it. If I open something up and it turns out to be worse than it looked, I stop and ring you — I won't run up a bill you haven't agreed to. Diagnostics are charged at an hourly rate and that time comes off the repair if you go ahead with me.

Will you work on a modified or mapped car?

That's most of what I do. Tick the "modified or mapped" box on the form so I can plan the time properly. Aftermarket parts, custom setups and project cars are all fine.

Do you do mapping?

Not myself — I don't write maps. I work with a tuner I rate and handle everything around it: the hardware, the fuelling, the fault-finding and getting it on the rollers. You get one point of contact and I'm not guessing at something outside my lane.

Do you do MOTs?

I don't do the MOT test itself, but I do pre-MOT checks to catch the obvious fails, and I do the repair work to clear anything on a fail sheet you've already got.

Is booking online a confirmed appointment?

Not quite — it's a request. I check it, look at the vehicle's history, then come back to you with a price and a slot. Usually within a few hours.

Where are you based?

14 Silk Street, Congleton, CW12 4DH. I mainly cover Congleton, Alsager, Sandbach and Cheshire East, but people travel to me for the performance work.

What if I don't know what's wrong with it?

Pick "Not sure — have a look" on the form and describe what it's doing. That's a diagnostic booking: I test it properly, tell you what I find, and quote the fix.

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