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Holden Custom Engine Tuning Products

Custom Dyno Engine Tuning

Below are a few of the products that Harman Motors uses and recommends. For more information on these products, and custom dyno engine tuning or other products that we may stock and fit in-house, please call us on +64 03 366 2375

VCM Suite

Using VCM Suite, we are able to tune and adjust your engine and transmission to account for modifications such as: Exhaust System, Induction Modifications, Camshaft Changes, Fuel Injector Changes, Transmission Modifications, Diff Ratio Changes and even Tyre Size Changes which means we are able to get the very best from your Holden along with stunning throttle response and improved fuel economy - feel excited? See more under 'Services'.

- We tune LS1/LS2/LS3/LSA (GenIII GenIV) - L76, L98 - Alloytech V6 Powered Vehicles

Harrop Products

Harman Motors is New Zealand's South Island Harrop Agent. We use a range of Harrop products, and offer our fitting and tuning services.

- Superchargers - Brake Packages - Intake Systems - Engine & Suspension Components

PBR Brakes

The PBR Performance range of brake upgrade options is designed to offer drivers flexibility when looking to improve brake performance. The range includes full brake upgrade kits, performance brake pads, stainless steel braided brake hoses and racing brake fluid.

- Performance Brake Kits - Brake Upgrade Kits - Brake Components

Kelford Cams

We use a large range of Kelford Cams products, using these products we are able to offer reliable engine rebuilds, as well as high performance applications. If you require more information on a specific Kelford Cams product, call us on 03 366 2375 .

- Camshafts - Valve Springs - Roller Rockers - Full range of Valve Train Components

Pacemaker Headers

Pacemaker Headers stands as one of the industry leaders in header design and manufacturing. Harman Motors can supply and install headers for most types of vehicles. We test many different vehicles on our dyno and find Pacemaker's are best value for money on Holden LS1/LS2/LS3/LSA engines. To find out what header best suits your application, please call or email us: click here for the contact page.

- Competition Headers - Tri Y Design - Tuned Design

X Force Exhausts

X Force Exhausts have proven to dramatically increased performance, and in some cases also improve fuel economy. We can install these exhaust systems on your Holden or Ford. Make sure to check out our dyno graphs that show some increases.! Of course each vehicle will be different, so give us a call today to discuss what system would suit you best.

- Big Bore Exhausts - Stainless/Carbon Mufflers - Exhaust Tips - Laser Cut Flanges

Cold Air Intakes

We have quality Cold air intakes for VTII - VF V8's using quality K&N reuseable filter elements.

We have a full range of upgrade packages for the Commodore LS1/LS2/LS3/LSA market from air box kits right through to 383ci complete stroker engines.

Ford fans are not forgotten either with products such as our all new adjustable camshaft vernier gears and billet oil pump gears for the boss V8.

- Cold Air Boxes - CNC Ported Cylinder Heads - Other Performance Parts

Pennzoil Oils

Harman Motors uses and recommends Pennzoil products, for use from general servicing and custom dyno engine tuning to performance applications. We can also use other oils that you may specify.