Mitsubishi 3000 GT Tuning

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The 3000 GT is a good tuning project to do. Plan ahead and research 3000 GT tuning to spare yourself making the usual expensive mistakes we typically get told about.

We look at 3000 GT tuning and report on the greatest mods that work. Mitsubishi 3000 GTs make a good tuning project and with the best parts you can positively improve your driving pleasure.

Tuning tips and articles

Engine tuning Transmission tuning Care care Intake & exhaust mods Improve handling Forums

Our aim in 3000 GT engine tuning should be to increase peak power and Torque at the top end.

With the right choice of mods you can convert your 3000 GT into a hot hatch, potentially beating larger cars on the track.

The best power gains come from larger engine sizes. The more you start with the bigger the return on investment so engine swaps are good value mods for small engined cars.

Power mods.

These mods sports upgrades are usually carried out by our members, decide how far you want to push your car before you get going.

Getting the correct grade of motorsport parts for your planned usage of the car is essential. Stage 3 (competition) mods just won't work well on the road difficult in stop start traffic.

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Guide to the Best Tuning Mods & Upgrades

  1. Mods that Remove a Restriction

    If the intake or exhaust are restricted in any way this will have an impact on your cars performance, so use an induction kit/filter upgrade and better flowing exhaust whenever your tuning creates a flow restriction.

  2. Mods that Improve Handling

    Braking, Suspension and general alignment of the suspension components is vital for any tuning project even before you start increasing power.

  3. Fit Stronger Parts

    Tuned cars will show up weaknesses, typically in the turbochargers, clutch and internal engine components. Whilst most engines can cope with mild tuning mods, TorqueCars recommend that you upgrade the internal components before these weak spots manifest themselves.

  4. ECU Tunes & Remapping

    While some cars can be easily remapped, others may require piggyback ECU's or aftermarket ECU's but this is the most vital step of your tuning project as it fully releases the power from all of your mods and upgrades. Expect 10-20% on NASP engines and 30-40% on turbocharged units.

  5. More Power Needs More Fuel & Air

    Every tuning project will aim to increase the air supply, but fuel supply is just as vital and will need to match the air the engine can utilise. Fuel to Air ratio is vital so upgrade the fuel pump & injectors. Also you can look to perform head mods (flowing and porting), bigger valves, fast road cams and forced induction upgrades to improve fuel.

Stages of Tune

Stage 1 mods: Remap, Sports exhaust, Alloy wheels, Lighter flywheel, Panel air filter, Suspension upgrade (drop 30-40mm).

Stage 2 mods: fuel pump upgrades, Power/Sport clutch, Fast road cam, high flow fuel injector, Ported and polished head.

Stage 3 mods: Engine balancing, Adding or upgrading forced induction (turbo/supercharger), Internal engine upgrades (pistons/head/valves), Competition cam, Sports gearbox.

Peak power is nice in motorsport but for a drivable and fun car you need a long power band and perhaps extending the rev range.

The whole point of our guides is to give a brief overview of modifying modifications and point you in the right direction, our forum is where you can ask for more detailed advice and tips on your tuning project, the best uprated kits and all aspects of modding cars.A fast road camshaft will be one of the best NASP power mods you can do from a single upgrade to your engine.

It improves the intake and exhaust flow and increases the power if done right. Ideally you'd add other mods and finish up with a performance chip. TorqueCars would caution you not to go with a motor sports profile cam as this upsets the engines idling and general town driving characteristics.

You will need to ensure that the engine is not starved of fuel so will need to ramp up the fuelling.

Using high octane petrol is another option if you find you are suffering from detonation or premature ignition on your Mitsubishi project after fitting other performance mods. Higher capacity injectors will enable you to supply sufficient fuel to the engine.

Uprate the fuel pump to cope with the extra fuel requirements of your tuned 3000 GTs uprated injectors.

Intake and Exhaust Tuning.

Now we move on to the intake and exhaust and ensure proper flow through the engine. Please note that WE DO NOT FEEL YOU GET POWER GAINS FROM INDUCTION KITS, unless you have tuned your car a lot and are finding that the standard air intake has become limited.

Derestricting the air feed into the engine is the primary part of performance tuning so get a better flowing air filter if you find that the car is running lean. Induction kits can sound great but due to the warm air in the engine bay they will not add noticeable power and usually rob you of power on most cars.

Do not go with the largest exhaust you can find this will slow up the exhaust flow rate - the best exhausts for power gains are usually between 1.5 to 2.5 inches. It is the shape and material more than the bore size.

flowed (porting and polishing) the head will allow you to maximise your air/fuel charge. Leave this to a professional though with a proper flow bench and machine tools When you heavily modify your 3000 GT you will see that the standard clutch starts to slip so get an uprated clutch. The best mods we would do for your 3000 GT are Remapping or piggy back ecu, fast road cam and air intake and exhaust.

NASP engines do not achieve big power gains if you remap them, unless you have done extensive modifications. With turbocharged engines this is another story. A remapped turbo will give significant power gains and fully release the potential power of the engine. The most phenomenal power gains for NASP engines usually involve the addition of forced induction. Turbos are generally harder to add than a supercharger. Turbos increase power in increasing proportion to th engine speed and this can make mapping difficult.

Superchargers, however will give a boost which is proportional to engine speed so is easier to map. To cope with forced induction you will usually need to decrease the engines compression ratio .

Handling/Suspension upgrades

Handling modifications are usually your first port of call for the 3000 GT.

Putting a small amount of negative camber on the fronts and a few degrees of toe out, will greatly benefit your 3000 GT in handling and cornering.

We would go to a maximum drop of 22mm - 39 mm on most models. You risk handling compromises if you go lower than this.

Alloy wheel upgrades.

The benefits of alloys include a lower unsprung weight and more efficient brake cooling. Further improvements can be made to your cars handling with the addition of track legal slick tyre. The drawback to large rims on your 3000 GT is that you alter your final drive ratio so this will have a negative effect on acceleration.

Although some people have installed larger rims we would restrict ourselves to a 18 inch rim size as the maximum.

There is a more updated version of this Mitsubishi 3000 GT Tuning article on TorqueCars.com.

For more information on Tuning your car please join us in our friendly forum where you can discuss 3000 GT options in more detail with our 3000 GT owners. It would also be worth reading our unbiased Mitsubishi tuning articles to get a full grasp of the benefits and drawbacks of each modification.

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