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Better, Faster, Easier.

Bazzaz is the smartest performance tuning technology.
They say a good tuner is only as good as his tools. And we create powerful tools.
In doing so, we enhance the experience and interaction with your machine to create a more enjoyable tuning and riding experience.

EMS - Construction

  • Heat, vibration, and weather proof potting material used to protect the electronic control unit
  • OEM connections wherever possible as opposed to cheap and unreliable T-Taps used by many others
  • Rugged, locking main connector; no stripping or splicing wires
  • Sturdy and precise shift sensor
  • 100% Quality Inspections, unlike most manufacturers, at Bazzaz we test every single component of the systems we build for you. We test every harness, every control unit, every switch...It is a lot of extra work but we know you expect nothing but the ultimate in quality. In the highest levels of racing, failures in parts are not acceptable. We back this up with a one year warranty.
Principia - Construction
EMS - Traction Control
Principia - Electronics
Principia - Software
Principia - Data Processing
EMS - Quick Shift
EMS - Fuel Control
EMS - Self Fuel Mapping

To our customers and dealers,

The Bazzaz team would like to thank you for the many years of support and loyalty to our products.

As of 1/1/22 Bazzaz will no longer offer support for the Bazzaz engine management line (Z-Fi, Z-Fi TC, QS4, ZAFM).

Although YFI racing will not be offering technical support for Bazzaz products except for customers who purchased directly from YFI Racing, many QS4 kits, accessories, and spare parts will be available through them.

You can also contact YFI Racing at if you do not find what you are looking for on their site.

The Bazzaz website will remain to offer customers access to installation instructions, fuel map database, and technical support documents. The technical support documents utilize the same diagnosis steps that the Bazzaz technical support team has worked from since the beginning so they should be very helpful.

The Big Three: double-check these three common culprits:

  1. The Bazzaz ground lug is properly secured to a non-insulating chassis ground. Test this by temporarily grounding the Bazzaz ground lug directly to the battery negative terminal and checking to see if this resolves the issue.
  2. The vehicle has fuel and there are no obstructions (such as a fuel line kink) that could affect fuel delivery.
  3. The Bazzaz control unit powers up. Turn the key on and the control unit should illuminate blue. If it does not, re-check the 12V power source connection

Bazzaz tuning software and software manual

Principia dyno software and software manual

Fuel map database

Engine management wire color guide

Not starting or running properly

Quick shifter troubleshooting

Software troubleshooting

Traction control settings

Traction control troubleshooting

ZAFM troubleshooting

ZAFM O2 sensor installation

Z Bomb integration

Best regards,
Bazzaz team

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