Infiniti Q70 Tuning

"Thanks for reading our Infiniti Q70 tuning tips."

As many of our readers have asked about the Q70 and recommendations on how to modify one, so we've created this guide to go over what we feel are the primary areas which make for improvement and tuning success on this engine.

The Q70 is a good tuning project to take up your weekends. With the right mods your Q70 can be transformed into a fun car. Don't waste money, do your homework and follow our unbiased guides to each performance upgrade so you don't waste your money.

 

Tuning tips and articles

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

 

Handling/Suspension upgrades

Many Q70 owners uprate the handling of their cars with suspension upgrades as a priority, this will certainly increase your enjoyment of the car.

 

Good suspension tweaks that substantially improve handling for the Q70 include a couple of degrees negative camber and 1-1.5 degrees of toe (set out to improve cornering or in for better stability) on the front wheels.

We suggest that you fit modified suspension and lower the car by 21mm - 37 mm. Larger drops require arch work - especially on models already equipped with motorsport suspension.

For radically improved stopping add better quality pads and mate this with better brake discs.

Please note that some performance brake pads will be noisy and will need to be hot before they start to work.

On a road car the brakes are occasionally used so won't be as effective at slowing you up so choose friction pads which work well in daily use.

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

 

Q70 make good sleepers if you debadge them and fit the most powerful engine upgrades and handling mods you can !

Smaller engines do not provide much of a return in terms of power so start with a bigger engine. Engine swaps are a good option if you have a small engine size.

Tuning modifications.

These are the modified kits are usually installed by our members, decide how far you want to go before you start.

Engine choices were fantastic and all make good power gains with the right mods.

Getting the right sports modifications for your planned usage of the car is vital. Stage 3 motor sport mods just won't work well on the road and will make the car undrivable.

Typical stage 1 mods often include: Remap, Lighter flywheel, Suspension upgrade (drop 21mm - 37 mm.), Alloy wheels, Panel air filter, Sports exhaust.

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

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

Your targets when modding your car should be a nice flat torque band. You don't want all the power to be at the top end unless you are creating a motor sport car.

In this article we shall give a brief overview to the best upgrades for your car, but we'd encourage you to spend some time on the site looking into the details of each type of performance part.One of the most cost effective mechanical motorsport parts you can do to your NASP engine is to fit a fast road camshaft .

The exhaust and intake valve durations play a huge role in your cars power band, but be careful here, getting this wrong can upset the idle and make the car difficult to drive in traffic. You'd need to follow a camshaft upgrade with other mods and finish with a performance chip for the best performance gains.

Don't forget to look at the fuelling when you are increasing the power - it makes the car more thirsty.

If you find you experience flat spots and power surges after your modified mods you should check the fuelling and try a higher octane fuel as well. To get sufficient fuel you may need to increase the injectors on your engine.

If you are increasing your fuelling with bigger injectors you will also need to get a bigger fuel pump to supply it.

Intake and Exhaust Tuning.

Now we move on to the intake and exhaust and ensure proper flow through the engine.  Air induction kits only help to add performance if the air intake is struggling! Adding an induction kit to most standard engines will see NO LOW END POWER GAIN AT ALL. If you have heavily modified your engine and it's need for air INCREASES DRAMATICALLY then an induction kit is the answer and will help remove this restriction.

Maximum power gains come from a full induction kit with a cold air feed on heavily tuned engines, this can be sited within an air box but a panel filter should suffice for most applications. TorqueCars suggest you use a panel air filter as these are easy to clean and maintain and generally perform better than paper ones.

Sports exhausts equal out the flow of gases through the engine. But if your exhaust pipe is too large, ie: over 2.5 inches bore, you will lose a great deal of the flow rate and end up lacking power and torque.

Getting a professionally gas flowed head with larger valves can fully maximise your power gains. A good fast road sports clutch will help to keep that power going where it should. Never skimp or expect your standard clutch to cope. The best mods that we recommend for your Q70 are fast road camshaft, remap, induction and exhaust, suspension.

Remaps offer big power gains on all turbo charged cars. On NASP engines the benefits are doubtful. However a chipped ECU on a NASP engine will help unleash the potential if you have done a lot of mods. Adding forced induction will see massive power gains but this is usually too expensive to be cost effective. Superchargers are usually easier to add than a turbo. With a turbo the boost curve is related exponentially to the engine speed making it difficult to map fuelling with.

Superchargers will give a boost which is correlating to engine speed so is simpler. Adding forced induction will usually require a lower compression ratio or water injection.

Alloy wheel upgrades.

Due to the fact that alloys are lighter they improve performance and they can help to cool the brake disks. Further improvements can be made to your cars handling with the addition of track legal slick tire. The drawback to large alloy wheels on your Q70 is that you're altering your effective final drive ratio so this will have a detrimental effect on performance and acceleration.

Due to this fact endeavour to keep the overall rolling diameter of the wheel the standard factory sizes. In all cases not going larger than 18 inches. 19's look great on a Q70 but if you are honest, it will ruin the fine ride quality.

For more information on Tuning your car please join us in our friendly forum where you can discuss Q70 options in more detail with our Q70 owners. It would also be worth reading our unbiased Infiniti tuning articles to get a full grasp of the benefits and drawbacks of each modification.

Please help us improve these tips by sending us your feedback in the comments box below.

We love to hear what our visitors have got up to and which mods work best for them on each model of car. Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these articles which are continually updated.

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