This is how to make your M135i sound like an M4

This M135i owner hacked into BMW's synthesised system to make his car sound like a 425bhp M4

Whether we like it or not, the practice of synthesising engine noises is becoming increasingly common in new performance cars. Sticking a turbocharger into the exhaust pathway and improvements to sound proofing have lead to a significant decrease in engine noise, much to the disappointment of many enthusiastic drivers. To claw back some of that aural involvement, manufacturers have resorted to this controversial system.

BMW's synthesised engine noises are played into the cabin through the car's speakers, so in theory, disconnecting your speakers should remove their influence altogether. But it was only a matter of time before someone went a step further and actually modified the synthesised sound.

Subscribe to evo magazine

Subscribe today to our exclusive new offer and SAVE 39% on the shop price, get evo for its original cover price of £3.00 an issue, plus get a FREE gift worth £20!

>Read - BMW M135i review and pictures

In this case, a tech-savvy M135i owner has managed to hack into his system and upload the soundtrack used in the new M4. It swaps the typically smooth straight-six soundtrack for a rougher, harder voice. You can hear it in the video above.

Advertisement
Advertisement - Article continues below

>Read - BMW M4 review, price and specs

If you want to listen to the M135i with its factory fitted synthesiser working, watch our track battle video below. What do you think? 

Advertisement
Advertisement

Most Popular

Visit/renault/9499/renault-5-gt-turbo-review-history-prices-and-specs
Renault

Renault 5 GT Turbo – review, history, prices and specs

Not as wild and bonkers as the mid-engined Turbo, the Renault 5 GT Turbo was still a rather fine hot hatch
1 Apr 2020
Visit/saloons/202421/supersaloon-face-off-old-vs-new
Saloons

BMW M5 F90 vs E28 M5, RS6, E500 and Lotus Carlton: supersaloons old vs new

From the first to the very latest, we take a dive into the history of the supersaloon with the 1985 BMW M5 E28 and other classics taking on today's mo…
4 Apr 2020
Visit/bentley/202227/ps15m-bentley-bacalar-revealed-in-six-new-designs
Bentley

£1.5m Bentley Bacalar revealed in six new designs

Bentley’s exclusive Mulliner brand is returning to low-volume manufacturing with the striking Bacalar convertible
3 Apr 2020
Visit/features/22907/hyundai-i30-fastback-n-versus-the-col-de-turini
Hyundai i30 N hatchback

Hyundai i30 Fastback N versus the Col de Turini

We take the Hyundai i30 Fastback N up the Col de Turini, a 31km stage of the Monte Carlo World Rally Championship
19 Jul 2019