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The Twin Tuner II allows you to easily adjust your fuel injection and ignition to match the requirements of performance parts including high compression pistons/heads, camshafts, free flowing exhausts, and low restriction air filters.
You can add or subtract fuel (up to +30% or down to -20%) and retard spark timing up to 10 degrees.
The user interface consists of up/down pushbuttons and a bright daylight readable LED display to select and change the fuel trim and spark retard in the RPM and throttle position ranges required by most applications.
The Twin Tuner II also has an advanced mode, where you can use the optional USB Interface and PC Link Tuner software to make precise fuel and spark retard adjustments.
The PC Link Tuner software uses the same RPM rows and throttle position columns as the Dynojet Power Commander.
If you have created Dynojet Power Commander files for your applications, you can use the same values in our tables.
You can make independent adjustments to the front and rear cylinders.