Vauxhall Omega Tuning

"Omega - the last letter in the Greek Alphabet"

The Omega was Vuaxhall large executive car designed to take on the Vectra. The Omega suffers depreciation like a war zone holiday villa which means there are some bargains to be had.

 Improving the handling should be your first priority in your Omega tuning project. We suggest that you fit uprated suspension and lower the car by 30-35mm. Larger drops require arch work - especially on models already equipped with sports suspension.

Our aim in Omega engine tuning should be to increase peak power and Torque at the top end.

Smaller engines do not provide much of a return in terms of power so start with a bigger engine. TorqueCars recommend the 2.5 V6 or the 3.0, sadly the diesel engines are too agricultural and offer little potential to the tuner. Engine swaps are a good option if you have a small engine size, look to the Vectra and Calibra for suitable engine donors.

Never overlook the beneifts of weight reduction, especially on a large car like the Omega. Less weight means better acceleration, better handling and greater fuel economy. Replace the seats with light weight seats, rip out the rear seats and take out some of the copious quantities of sound deadening material from the car.

Vauxhall Omega Tuning modifications.

One of the best mechanical mods in terms of cost per power gained is to fit a fast road cam. (A full race cam is difficult to live with and unsuitable if this is a daily driver. Don't forget to uprate the fuelling when you are increasing the power - more power makes the car more thirsty.

You can improve your Omegas response to the throttle with a Fuel pressure boost valve. To get sufficient fuel in some extreme situations you may need to uprate the injectors on your engine. A fuel pump will only deliver a finite amount of fuel, so you may need to uprate this if you notice it starts to run lean.

Vauxhall Omega Intake and Exhaust modifications are popular options for most tuning projects but common mistakes can ruin the car. Read up our article on intake and exhaust modifications. Induction kits work well on turbo engines and larger engines, for smaller Omega engines you should go with a sports panel air filter which gives a better top end and leaves the low down power alone. Sports exhausts will certainly help air flow through the engine but do not go too large. Stick to 1.5 to 2.5 inches for best results and this is best mated to the induction kit or panel air filter and a sports catalyst.

A good fast road power clutch will help to keep that power going where it should. Never skimp or expect a standard clutch to cope if you push power to over 30% of standard.

Lets look now at Vauxhall Omega Wheel modifications. Because alloy wheels are lighter they improve performance and they help to cool the brake disks. The lower unsprung rate can improve both handling and braking.

It is worth noting that although they can look cool on the Omega,  big alloy wheels will actually decrease your performance. The larger you go the slower your acceleration will be due to the change in your effective final drive ratio although you will get a faster top end speed. Although some people have gone larger we would stick to a 16 inch rim size as the maximum. We would also recommend lowering the Omega by 35mm and fitting an anti roll bar to sharpen up the handling.

Please join us in our forum to discuss the Omega options in more detail with our Omega owners. It would also be worth reading our Vauxhall tuning articles to get a full grasp of the pros and cons of each type of modification.