Remapping, Diagnostics & Full Garage Services in Latchingdon
Mon to Fri, 9am to 5pm 07973 358408
Remapping, Diagnostics & Full Garage Services
Cars being worked on inside the workshop

About us

A small workshop that does one thing properly

No call centre, no franchise, no file bought in from somewhere else. The person who writes your map is the person you speak to.

A car raised on stands in the workshopOn the ramp

Our story

Started in 1990, still on the same site

P&J Tuning began as one person working on friends' cars at weekends. Word spread, the unit got bigger and the tools got better, but the way we work has not changed. Every car gets looked at before it gets touched, and every file is written for that vehicle.

Today we look after everything from daily runabouts and high mileage diesels to modified cars and small van fleets, for customers across Maldon, Latchingdon, Chelmsford. A lot of them are on their second or third vehicle with us, which is the only figure we really care about.

0Trading since
0Years in the trade
0Brake testing facility
A technician checking an engineDiagnostics bench

Kit and method

What we run, and why it matters to you

Good tools do not make a good tuner, but bad tools stop one. Here is what sits on the bench and what it means for the car you drop off.

  • Dealer level diagnosticsManufacturer level coverage across most European and Japanese makes, so we can read what the car is really doing.
  • Bench and boot toolsOBD where it is supported, bench or boot read where it is not, with the right adapters rather than a workaround.
  • Road and rolling road dataLogs taken in gear under load, so the file is judged on real numbers instead of how it feels on the way back.

How we work

Four things we will not budge on

A garage, not just a laptop

Servicing, repairs and diagnostics every day. The mapping is one more thing we do, not the only thing.

HGV as well as cars

Thirty five years of commercial work, and a brake testing facility on site.

The original is kept

Your factory file is saved before anything is written, so it can go back to standard.

Prices up front

What we charge is on the site. No ringing round for a number.

You get told the truth

If a map is not what the vehicle needs, we will say so.

A Scania tractor unit in for work

Cars to HGV

One garage for the whole fleet

Most places that map cars will not touch a truck, and most truck places do not map. We do both, from the same unit, with a brake testing facility on site. For an operator that means one phone call instead of three.

  • Cars, vans, light commercials and HGV
  • Servicing and repairs, not just software
  • Brake testing on site, no second trip
The rear of a tuned Audi estate

Drop in or give us a ring

We are at Mayfair Industrial Estate, Maldon Road, CM3 6LF. Call ahead if you can so we know to expect you.