Peugeot 307 Tuning

"Getting the most from your 307"

A popular family car the 307 replaced the 306 and was an instant success. The standard car can be greatly improved though with the right mods and we will look at various handling and engine modifications to allow you to create your perfect car.

Peugeot 307s certainly make for a good tuning project and with the right performance modifications you can dramatically maximise your driving pleasure.You can do a lot to improve the performance of your 307 with our step by step tuning tips. Sit down first and research 307 tuning to avoid making the usual costly slip ups we see.

Tuning tips and articles

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

Handling modifications are usually your first port of call for the 307. Drop the car by as much as 35mm and fit stiffer dampers, bigger drops will need other modifications in most instances.

Top end power should be your overall aim on the 307 with a nice fat peak torque band.

uning modifications.

The following upgrades are usually fitted by our members, decide how far you want to go before you begin.

Getting the best performance upgrade kits for your planned usage of the car is vital. Stage 3 motor sport mods just won't work well on the road making the car difficult to drive.

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

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

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

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

The whole aim of our tips is to give a brief overview of modding mods and point you in the right direction, our forum is the place to go for detailed advice and tips on your customized car project, the best uprated upgrades and all aspects of modding cars.Fast road cams offer one of the biggest bhp gains for your money as far as a bolt on sports modifications goes on a NASP engine.

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

When pushing up the power you will need to ramp up to the fuelling. More power needs more fuel.

Using high octane petrol is another option if you find you are suffering from pinking or premature ignition on your Peugeot project after fitting other mods. 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. Contrary to popular belief there is often very little if any power gain obtained by fitting an induction kit, they only help and are recommended after you raise the engines power to the point where the standard air intake box cannot cope!

Derestricting the airflow into the engine is a primary goal 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 actually rob you of power on most cars.

Sports exhausts can usually air flow out of the engine but avoid an exhaust that is too large or you could will reduce the flow rate. Stick to 1.5 to 2.5 inches as a rule of thumb.

Airflow through the head can be dramatically increased with some professional gas flowing. These should match and be setup to take into account any other engine mods. A good triple plate fast road power clutch will help to keep that power going where it should. Never cut corners or assume a standard clutch to cope. The best mods we recommend for your 307 are remaps, sports camshafts and induction improvements.

Turbo engines are just asking to be flashed. You will see large power gains on most modern turbo engined cars including diesels making a remap one of the most cost effective and large modifications for your money.

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

Adding forced induction will see impressive power gains but this is usually too expensive to be cost effective. Turbos are often harder to add than a supercharger. It is harder to map a turbo as the boost comes on exponentially with revs.

The nice directly proportional boost and rpm characteristics of the supercharger make them more straightforward to map. Decreasing the engines compression ratio will allow you to add forced induction, water injection may also help prevent detonation.

Handling/Suspension upgrades

Improving the handling for many people first priority in your 307 tuning project.

Fully adjustable suspension allows you to fine tune the handling of you 307 greatly improving your drive.

We suggest that you fit sports suspension and lower the car by 30mm - 39 mm. Larger drops require arch work - especially on models already equipped with uprated suspension.

Alloy wheel upgrades.

Alloy wheels will help the brakes cool down and are usually lighter than the steel ones. The downside to large alloy wheels on your 307 is that you alter your effective final drive ratio and this will have a detrimental effect on acceleration and performance. Although some people have gone larger we would stick to a 18 inch rim size as the maximum.

For more information on Tuning your car please join us in our friendly forum where you can discuss 307 options in more detail with our 307 owners. It would also be worth reading our unbiased Peugeot 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.

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