MZ3 S54 Shark Injector To Enable Sport Mode

  • Horsepower and torque gains
  • Faster and smoother throttle response
  • Top speed limiter removed
  • Sport Mode enabled by turning off DSC
  • Extremely easy to install/uninstall
  • Reversible and reusable

Performance software is a must-have upgrade on your MZ3 and you won't find an easier and better software solution than the Shark Injector. Developed by BMW tuning expert Jim Conforti, this device plugs into the car's diagnostic port and flashes new performance files into your car's engine computer (ECU). There's no removal of the ECU and shipping, no cables, no laptop required - only a battery charger! Installation takes just a few minutes and your engine will perform like never before! This version of MZ3 performance software will enable the hidden Sport Mode in the ECU when you turn off DSC.

The MZ3 performance software was developed on the dyno to create maximum power and torque using premium 91+ octane fuel and revising the torque limiters in the ECU. The software makes changes to the ECU's maps and algorithms for fuel injection, ignition timing, VANOS and camshaft movement, and transitional fueling. We modify the maps for part throttle and full throttle so you get better response and more torque at all RPM. Choose between a stock or raised 8,100 RPM rev limit. The top speed limiter is removed. By fine tuning these maps we've been able to improve the S54 engine beyond what BMW did by making more power and torque and a smoother-running engine. 

The Shark Injector plugs into the diagnostic port inside the Z3 cabin. With the battery charger supplying power, press the Upgrade button and within minutes the ECU is reflashed with the new performance tune. No other software product on the market comes close to how easy it is to install. You can use the Restore button to re-install the stock BMW software at any time. Detailed instructions are included. Other tuners require you to remove the ECU and ship it to them or use a laptop to read and write a new file. The Shark Injector is ready to install right out of the box! A planned future upgrade will allow you to use the USB port to load different performance files. 

Power and Torque Gains
Stock: 253.2 rear wheel Horsepower, 223.1 rear wheel Torque
Sharked: 266.1 rear wheel Horsepower, 229.8 rear wheel Torque
Peak Gain 12.9 HP and 6.7 Torque @ the wheels.
A Max gain of 14.0 lb/ft rear wheel torque @ 4340 rpm

T#: 386116 | Part#: MZ3-N4S54DSX
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Starting at $279.20
279.20
SALE: $279.20 (20% OFF)
WAS: $349.00 on 05-03-2026

This product was last offered at the strikethrough price on
05-03-2026

This product is backed by our
Lifetime Replacement Program! Read more here
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Est. Ship Date:
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Shark Injector MZ3 S54 Shark Injector To Enable Sport Mode MZ3-N4S54DSX
91 octane
Shark Injector - Corporate Logo
T#: 387547
|
Part#: N4S54DSC
Availability:
On Order
Est. Ship Date:
on Aug 11, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
Sale - Save 20%
$349.00

This product was last offered at the strikethrough price on
05-03-2026

$279.20
Qty: 1
Shark Injector MZ3 S54 Shark Injector To Enable Sport Mode MZ3-N4S54DSX
93 octane
Shark Injector - Corporate Logo
T#: 387591
|
Part#: N4S54DSO
Availability:
On Order
Est. Ship Date:
on Aug 11, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
Sale - Save 20%
$349.00

This product was last offered at the strikethrough price on
05-03-2026

$279.20
Qty: 1
MZ3 S54 Shark Injector To Enable Sport Mode
$279.20