Tuning the Hyundai Grandeur

"Ta for reading this Hyundai Grandeur tuning guide."

The Grandeur is a great project car to play with. If you do your planning then you can create an awesome Grandeur but don't be fooled there are lots of motorsport inspired mods out there that will simply not suit it read our unbiased guides first.

We look at Grandeur tuning and summarise the greatest modifications. Hyundai Grandeurs provide a fun base for your project and with the best enhancements you can positively increase your driving opportunities.

Handling/Suspension upgrades

Improving the handling for people often first priority in your Grandeur tuning project.

If you set the toe out to 0.8 to 1.3 degrees on the front, and add a bit of negative camber then cornering will greatly improve.

We suggest that you fit sports suspension and lower the car by 27mm - 39 mm. Larger drops require arch work - especially on models already equipped with performance suspension.

Turning our attention to the Grandeur's engine we need to get a bit more power out of the top end.

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.

This list of the stages and motorsport upgrades are usually carried out by our members, decide how far you want to push your car before you get started.

Getting the correct grade of performance upgrades for your planned usage of the car is essential. Stage 3 (competition) mods just won't work well on the road hard to control in slow traffic.

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Modifying to Stage 1:

 Remap, Sports exhaust, Suspension upgrade (drop 27mm - 39 mm.), Alloy wheels, Panel air filter, Lighter flywheel.

Modifying to Stage 2:

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

Modifying to Stage 3:

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

Peak power is nice in motorsport but for a daily driven car you need a wide torque band and perhaps extending the rev range.

In this article we shall give your a good starting base to the best modifications for your car, but we'd encourage you to spend some time on the site looking into the details of each type of performance modification.One of the most cost effective mechanical sports modifications you can do on your NASP engine is to fit a fast road cam .

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 awkward to drive in traffic. You'd need to follow a camshaft upgrade with other mods and finish with a reflashed ECU for the best performance gains.

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

Most power losses, flat spots and erratic idling after sports modifications are done can usually be traced to fuel delivery or timing issues. Uprating the injectors is another beneficial modification and will deliver sufficient fuel.

A fuel pump will only deliver a finite amount of fuel, so you may need to uprate this if your injectors are demanding more fuel.

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 RECOMMEND INDUCTION KITS, unless you have tuned your car extensively and are finding that the standard air intake has become the bottleneck.

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 performance 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.

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

Head work including a polish and port and 3 or 5 angle valve job will really help to release the potential of the engine. A good triple plate fast road sports clutch will help to keep that power going where it should. Never make false economies or assume your standard OEM clutch to cope. The best mods we would do for your Grandeur are a remap especially on a turbo, a fast road camshaft and sports exhaust, with a good air intake.

Remaps offer significant 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.

We've also come across some owners experimenting with twincharged applications and making some very high power gains.

Despite the large cost involved adding forced induction to a NASP engine will give large power gains. Superchargers are generally easier to add than turbos. It is harder to map a turbo as the boost increases exponentially with revs.

The nice directly proportional boost and rpm characteristics of the supercharger make them more straightforward to map. To cope with forced induction you will usually need to decrease the engine compression ratio .

Alloy wheel upgrades.

Because alloy wheels are lighter they improve performance and they will help to cool the brake disks. Further improvements can be made to your cars handling with the addition of directional tread pattern tire. Large Grandeur alloys can decrease performance. If you get big alloys you will be changing your final drive ratio.

Although some people have fitted larger wheels without issues we would stick to a 16 inch rim size as the maximum.

For more information on Tuning your car please join us in our friendly forum where you can discuss Grandeur options in more detail with our Grandeur owners. It would also be worth reading our unbiased Hyundai 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. Comments are used to improve the accuracy of these articles which are continually updated.

This article was written by Waynne Smith on TorqueCars, and I appreciate your feedback and suggestions. This entry was filed under Hyundai. You can leave a response below or join TorqueCars forum to discuss this article and car modification in detail with our members.

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