We specialise in dyno tuning after market ecu’s and some factory ecu’s, tuning since 1998.

Dyno tuning is our speciality, we pride ourselves in having a well equipped state of the art dyno facility.

If you are looking for a dyno tuner in Sydney, JEM is the right place for you if we are familiar with your engine and ecu combination.

We have 2 dyno’s, a 2wd Mainline ProHUB dyno for up to 2000HP, and a Mainline AWD1500 dyno with twin retarder rear also rated to 2000HP. Combined our dyno’s are equipped with OBD2 input, tacho input, built in weather station (no fudge dyno), o2 sensors, high boost map sensor, 5 Gas Analyser with the IM240 EPA drive cycle test simulator, fuel pressure sensor, fuel flow sensor, flex sensor, knock detection, a smoke machine to check for boost / air leaks, and more.

With our equipment, dyno tuning at JEM is very precise. Both dyno’s are housed in a dyno cell, each with fume extraction and an air circulation system to ensure your car always breaths fresh air. We have a wide variety of tooling to not only tune, but perform fault findings and diagnosis. We’ll safely extract the most from your setup and go one step further to fine tune all rpm and load points not just full throttle. We’ll make sure your car drives and cruises as smooth as possible and delivers max safe power. You won’t need another tune after we’ve finished the dyno tune.

To book in a tune, call us on 9618 6001



-Which ECU’s do we tune?

We can dyno tune, supply, install, and or trouble shoot the following systems:

Aftermarket ecu’s: Haltech, MoTec, AEM, EMS, Nistune, Apexi Power FC, Adaptronic, Microtech, Autronic, ViPec, Link, Cobb.

Factory ecu’s: Ford Falcon BA onwards  / Territory, Subaru WRX 2001 onwards, Mitsubishi Evo 6-10, Mazda 3/6/MPS, Holden LS1 onwards.

-What type of cars are we experienced with?

Nissan, Toyota, Subaru, Mitsubishi, Honda, Holden, Ford, Chev, Daihatsu,

-What type of tunes can we do?

Tunes for:

  • Pump fuel, E85, Dual Map, Full Flex Fuel
  • Street, Circuit, Drift, Time Attack, Daily, Drags, Burnouts
  • Emissions Tunes
  • Race Fuel
  • NA, Turbo, Blown
  • Variable Cam Mapping
  • Drive by Wire Mapping
  • Data Logging Setup
  • Track Side Tuning, Road Tuning
  • Timing, Fuel Reg, Boost Controller Tuning
  • Power run, and more…

-Is there anything I (the owner) can do to help?

Before we load the car onto the dyno for a tune we will perform a pre dyno check using a check list, some of the things checked are:

Tire pressure and condition, fuel level, oil level and condition, spark plugs (if accessible), air filter (if accessible).

If the car fails in any of these areas we will be more than willing to rectify the problem. If you like you can check these things your self before you bring us the car.

Make sure these things are up to date to avoid additional charges.

-Is there anything I should do before the tune?

There are many factors related to the tune, which can effect your power output. Prior to the tune its best the have the car fully serviced, i.e the oil/filter, fuel filter, air filter all replaced, and spark plugs too. A smoke test prior can also identify any boost or vacuum line leaks which can cause tuning issues. Make sure the drivetrain fluids are up to date, worn or low box/diff oils can reduce power output too.

-What is a smoke test?

At JEM we have a special machine called a smoke tester. We remove the air filter and block off the intake pipe to seal all the intake piping, we then connect the smoke machine which pressurises smoke into the system. The smoke will visibly leak where ever there is a leak in the plumbing making it quick and easy to find a leak before the car hits the dyno. A smoke test is $110inc plus repairs. Let the team know when you book the car in if you want a smoke test.

-Can I watch it while you tune it?

Generally NO. For insurance and work cover reasons we are not allowed to let non staff members into the dyno room. If you have a big dollar setup then sometimes we can organise for you to come in, but you need to organise this with us in advanced. Rest assured we actually perform better on the dyno when there are less distractions, and you can trust us with your pride and joy.