Peugeot 308 Tuning

"Getting the most from your 308"

The 308 was released to a great fanfare in 2007 and has been a strong seller for Peugeot. The car suits families but with the right mods it can become a real hot hatch as well as a practical daily driver.

There are plenty of performance parts around for the 308 so we'll take a look at some of the best mods and get rid of a few myths so you don't waste your money on the wrong mods.

Peugeot 308s are popular cars and with a few sensible performance parts you can substantially increase your driving experience.You can do a lot to improve the performance of your 308 with our step by step tuning tips. We see many people wasting money on their 308 doing the wrong mods and then having to start over. Follow our guides to avoid ruining your car

Tuning tips and articles

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

Many 308 owners uprate the handling of their cars as a priority, this will certainly increase your enjoyment of the car. Drop the car by as much as 35mm and fit stiffer dampers, bigger drops will need other modifications in most instances.

Turning our attention to the 308s engine we need to get a bit more power out of the top end.

With our tuning guide your 308 can be a track day fun car and still be a reliable daily run around.

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.

308 engine tuning mods.

The following modifications are usually performed by our members, decide how far you want to push your car before you start.

Getting the right mods for your planned usage of the car is vital. Stage 3 motorsport mods just don't work well on the road making the car difficult to drive.

Stage 1 mods:lighter flywheel,sports exhaust,Panel air filter,Remap,alloy wheels,suspension upgrade (drop 30-40mm).

Stage 2 mods:fuel injector & fuel pump upgrades,power clutch,Fast road cam,Ported and polished head,.

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

You need to keep as much low end torque as you can and aim for a wide power band across the rev range rather than a narrow top end power spike.

The point of this article is to give a brief overview of car tuning upgrades and point you in the right direction, our forum is best place to go if you need more detailed advice and tips on your project and all aspects of modding cars.The intake and exhaust flow play a large part 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 cam upgrade with other mods and finish with a remap for the best performance gains.When pushing up the power you will need to pay attention to the fuelling. More power needs more fuel. Frequently power losses, flat spots and erratic idling after mods are done can usually be traced to fuel delivery or timing issues.Uprated injectors will enable you to supply sufficient fuel to the engine. 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 modifications.

Now we move on to the intake and exhaust and ensure proper flow through the engine. Contrary to popular belief there is usually very little power gain to be had by fitting an induction kit, they only work well and are recommended after you increase the engines power to the point where the standard air intake box cannot cope!

For most 308 engines TorqueCars would suggest you just go with a washable panel air filter. On heavily tuned engines and turbo vehicles an induction kit will help release the power providing you address the problem of needing cold air.

Sports exhausts will certainly help air flow from the engine but do not go too large or you may end up will reduce the flow rate. Stick to 1.5 to 2.0 inches as a rule of thumb.

gas flowing 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 A good fast road uprated clutch will help to keep that power going where it should. Never make false economies or expect your standard OEM clutch to cope.

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.

Despite the large cost involved adding forced induction to a NASP engine will give large power gains. Superchargers are generally easier to add than a turbo. With a turbo the boost curve is related exponentially to the engine speed making it hard to map. 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 compression ratio of the engine.

Alloy wheel upgrades.

The benefits of alloy wheels include a lower unsprung weight and more efficient brake cooling. Large 308 alloy wheels can decrease performance. If you get big alloy wheels you will be changing your final drive ratio. 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 308 options in more detail with our 308 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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