The Only Guide To Tuning Your Peugeot You Will Ever Need

Peugeot SXC Concept

Peugeot is a French car manufacturer with a long and rich history for producing many iconic models. They are popular not just in Europe but in many other parts of the world too. It’s been a while since we last saw Peugeot cars in the United States.

The Department of Transportation has stricter rules on safety and emissions than most parts of the world. And it’s for those reasons that Peugeot, and its sister brand Citroen quit the US market in the 1990s.

Rich W's Supercharged Beast

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I read in a recent news article about how PSA Peugeot Citroen are thinking of introducing the “DS” luxury brand to North America. Could this lead to Peugeot’s return to American shores? Who knows!

Do you live in a part of the world where Peugeot cars are still sold today? If so, one thought that might have crossed your mind is how you can improve the engine performance of your French lion. Lucky for you this post will tell you everything you need to know about unleashing extra horsepower from your Peugeot!

Petrol or diesel?

It’s no secret that more than half of Peugeot’s best-selling cars have diesel engines. When you live in a place where fuel is expensive, fuel efficiency will be at the forefront of your mind.

The good news is that both petrol and diesel engines can get tuned for extra power. Today’s Peugeot engines offer a good starting point for performance and efficiency. You only have to check out the website for more details on specs.

So, without further ado, here are some useful ways to harness the extra power potential your Peugeot has to offer!

Perform an engine flush

It doesn’t matter what petrol or diesel engine your Peugeot has. If its internals get clogged up with gunk, the oil that runs within it won’t lubricate your engine well.

Before you upgrade anything on your engine, the first step is to perform an engine flush. You just pour a can of engine flush into your motor and let it circulate at idle for a few minutes. Once you carry this out, you can then drain the oil, fit a new oil filter and add fresh, new oil.

When the oil is draining, don’t get surprised if you see “clumps” of oil and sludge draining from the sump! Some people take this a step further and remove the sump. They do this to ensure there is no sludge at the bottom of the tray, and that the oil pump is not blocked up.

There are some mixed views in the auto world about engine flushes. You know the benefits, but what are the downsides? If your motor has had a hard life, it will be likely that you have some leaking oil seals.

In older motors, it’s that “sludge” that can often plug any holes in the seals. So when the sludge is gone, your motor will start to leak oil! Of course, the good news is that you can take the opportunity to replace those seals. Otherwise, catastrophic engine damage might occur once you have increased your motor’s performance.

Ignition system

Once you have got the lubrication system sorted out, the next area to turn your attention to is the ignition system. Spark plugs, ignition leads and ignition systems can all get worn out over time.

If your Peugeot feels “sluggish”, chances are your car’s ignition system is to blame. Some people advocate fitting new plugs every 36,000 miles or three years. And new leads and ignition coil packs every 100,000 miles or ten years.

What's that doing in there?!?


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When you buy spark plugs, you need to ensure that they are “gapped” as per your motor’s specifications. Many off-the-shelf spark plugs are pre-gapped from the factory. But it’s your responsibility to check before you fit them.

Be sure to do a thorough review of the different spark plug brands on the market. The last thing you want to do is buy inferior ones that degrade engine performance! With ignition leads, you can buy aftermarket products with thicker cores and thicker insulation.

There’s also the added benefit that you can buy them in different colors. You may as well color-code your engine for added bling!

Forced induction

If you drive a diesel model, your car will already have forced induction – a turbocharger. But did you know that it’s possible to retrofit turbochargers to any engine?

When you go down the turbocharging route, be sure to fit a large intercooler or “charge cooler” at the same time. Doing so will ensure the denser air getting pumped into your intake is cold.

You might have to get creative with the intercooler’s fitting location. It might be best to entrust the work to a body shop if you want a factory-fitted look behind your front bumper.

Nitrous oxide

You might have heard of this stuff before. Some people call it “laughing gas.” But in the automotive world, it’s no laughing matter.

Having a NOS system fitted to your Peugeot can give you a much-needed boost of power when you need it. You usually have the gas bottle fitted in the trunk of your car, with pipework between it and your car’s intake system.

If you have watched movies like The Fast and The Furious before, you will know just how awesome NOS is!

Custom exhaust system

The stock exhaust system on your Peugeot is mediocre at best. It’s made of mild steel and is quite restrictive. A stainless steel custom exhaust will ensure that your engine can work to the best of its potential.

Consider fitting custom exhaust headers too, as they can help exhaust gases escape the engine better.

ECU remap

The ECU is your Peugeot’s electronic brains. It’s programmed to work with a “stock” engine setup, so you will need to have someone reprogram it for you.

Doing so will help your engine take advantage of the other modifications you’ve made. The process gets done using a laptop plugged into your car’s diagnostic port.

Good luck!