12V Auto Performance

26/03/2026

2022+ DQ boxes now supported!

That means if you have a MK8 which has been missing out on TCU tuning for a while now we can now get that sorted for you

12/03/2026

E92 335i N54 279HP>424HP

This E92 335i originally came to us in December and we have been progressively getting it to the level it is now

Original Dyno at the hubs 279HP

Mod List
17T Turbos
Intercooler
Turbo Inlets
Downpipes
Precision Ignition Kit
Intakes
HKS BOV

After tuning this setup we reached 424HP and 615NM on a roller dyno, so likely reading slightly less than the original hub dyno comparison

There were a few things holding it back which we have advised the customer

- Fuel System
- Needs Larger Intercooler

With either fuelling upgrades / E85 and a larger cooler we would like to see 500hp out of this setup in the future!

Work in progress

12/03/2026

C43 AMG in for a Stage 2 ECU & TCU Tune, with some crackles as per customer's request,

12/03/2026

MK7 GTI in for a Stage 2 ECU Tune, the gains we get from these MK7 GTI & R models are phenomenal

27/02/2026

Dmax 4J in for
- Stage 2 ECU Tune
- PPD 3inch Stainless Exhaust

27/02/2026

Audi Q7 in for
- Adblue Fix
- EGR Fix

27/02/2026

Audi A3 Facelift in for

Stage 1 ECU Tune
DSG Tune
DSG Service
Front Splitter Fitting
Rear Diffuser Fitting

27/02/2026

This Scirocco R originally came in for a tune , but we noticed that it had a rattle at idle,

Quick diagnosis to be the cam chain, common issue on these motors

We arranged for the customer to bring the car back where we completed

- Cam chain and tensioner replacement
- Stage 2 ECU Tune
- DSG Tune
- Mode 3 inch Downpipe
- Apple CarPlay Head Unit & Reverse Camera

22/01/2026

14/12/2025

A45 AMG in for a Stage 3 Turbo Upgrade

The vehicle came in with a blown original turbo, so the customer was keen to get his car back on the road with a lot more boost!

- Stage 3 Hybrid Turbo Installation
- High Flow Downpipe Installation
- Air Intake Install
- Custom Stage 3 Tuning

Now running a peak of 34PSI with very healthy logs, this thing is a weapon!

02/12/2025

12V Auto Performance is a Authorised XHP Pro Tuner

What that means for BMW owners,

We can tune your BMW ZF Transmission via XHP if you prefer,

XHP Stage 1 - 2 - 3 Tunes can be purchased and flashed to your car in-store

Shift Points , Launch Control , Torque Limiters , Throttle Blips & more can be customised to your liking

27/11/2025

Yes we can perform DME Unlocks for 2020+ BMW Vehicles

This 2020 G20 3 Series came in for a Stage 1 ECU Tune

We performed a bench unlock which then allowed the ECU to be Read/Written via OBD

Different ECU Versions require different methods, but rest assured we have a solution for most vehicles!