STM Holden VT-VZ GENIII LS1 mail order ECU tune

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New for 2015, STM is now offering a mail in MAF or MAFless tune service for your VT-VZ 5.7L GenIII powered Holden/HSV vehicle.

This mail order Maf or Mafless tune will suit the Holden/HSV V8 series of cars including Commodore and Calais models.

Unlike some others available on the market, this tune has been developed using data collected from numerous dyno and street tunes that we have performed to provide a significant power increase for these engines.

When used in conjunction with a good exhaust system, typical power output that can be expected are between 240-270kw at the wheels with significantly increased torque across the rev range. This equals over 300-330kw at the engine up from the standard 250kw provided from factory.

Add an OTR and we normally see 300kw+ at the wheels or 360kw at the engine.

The results are achieved through the recalibration of both ignition timing and fuel mapping. Fuel economy should not be affected greatly through the use of this recalibration and in some circumstances an improvement in fuel economy may be seen.

NZs leading performance car workshop

Price includes GST