PSA EB Tuning

"Tuning the PSA EB engine."

We examine the options for your EB tuning and provide tips on the greatest upgrades. PSA EBs make a good tuning project and with the optimum sports tuning mods you can dramatically enhance your driving enjoyment.

The 3 cylinder EB engine offered clean burning engines with a good level of power whilst still retaining reliability.

History, Power & Specs of the EB Engine

The PureTech engine from PSa was available in a number of configurations and won the best engine in the 1.0 to 1.4 category in 2015:

  • EB0 — 1.0 L (988.9 cc) Euro 5 50 kW
  • EB2 — 1.2 L (1,199.9 cc) Euro 6 61 kW
  • EB2DT — 1.2 L (1,199.9 cc) turbo Euro 6 81 kW
  • EB2DTS — 1.2 L (1,199.9 cc) turbo Euro 6 96 kW
  • EB2ADTS — 1.2 L (1,199.9 cc) turbo Euro 6 100 kW
  • EB2ADTX — 1.2 L (1,199.9 cc) turbo Euro 6 115 kW

Best EB engine upgrades

The ultimate modifications on an engine are in our opinion the ones that give the biggest return for your cash.

We won't be swayed by popular EB modifications, they need to be cost effective.

Altering your EB camshaft will make a dramatic difference to the engine torque. Choosing a higher performance camshaft profile raises the torque accordingly.

Fast road camshafts tend to increase the performance over the rev band, you could sacrifice a little low down torque but the higher rpm power will be lifted.

Competition camshafts, increase the higher rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers.

For a daily driver should ideally to optimize your bhp range to your typical driving style.

I'd be amazed if you have found a Motorsport cam is a pleasure to live with when driving around busy urban areas. This is because a competition cam causes a very lumpy idle, and makes the car more prone to stall or jerk along in stop start traffic, sadly though many ignore this and end up ruining a perfectly good car and having to revert back to a fast road, or OEM cam profile.

Some EB engines respond better to less aggressive cam durations check your engine on a rolling road.

The ecu map and injectors and fuel pump also will make differences on the power gains you'll achieve.

Extending exhaust or intake durations can alter the power band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations.

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Best mods for your EB

  1. Fast road Camshafts are generally the biggest mechanical mod upgrade, but they must be setup by someone who knows what they are doing and they are not always easy to source but you might find a local firm to regrind a stock camshaft.
  2. Remaps - A Remapped EB ECU provides the biggest gains for the money, replacement ECUs, and Tuning boxes are all alternatives.
  3. Internal engine mods - crank, pistons, conrods & compression ratio including balancing and blueprinting
  4. Intake Mods and Performance Exhausts - Note that on their own these mods won't ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction.

EB Tuning Stages

Typical stage 1 mods often include: Panel air filters, Sports exhaust header/manifold, Remaps, Fast road camshaft, Intake manifolds, .

Typical stage 2 mods often include: high flow fuel injectors, fuel pump upgrades, Sports catalyst & performance exhaust, Fast road cam, Ported and polished head, .

Typical stage 3 mods often include: Adding or Upgrading forced induction (turbo/supercharger), Twin charging conversions, Internal engine upgrades (pistons/head/valves), Competition cam, Engine balancing & blueprinting, .

The EB power trains are fantastic to work on and we see that there are plenty of parts and performance parts around.

Remaps should help to release the full potential of all the tuning parts you've fitted to your EB.

(In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.)

It will usually give you around 30% more power on turbocharged vehicles and 15% on NA (naturally aspirated) engines, but you mileage will vary depending on the tuning parts you've done and the condition of your engine.

Pushing air and fuel into the EB engine is vital to any engine upgrade job.

Intake take the air from the filter and allow it to be pulled into the engine cylinders.

Structure and flow characteristics of the Intake can make a big difference to fuel engine efficiency on the EB.

I usually find manifolds are in desperate need of aftermarket parts, although some manufacturers provide fairly well optimized headers.

Larger EB valves, doing some port work and head flowing will also boost bhp, the fantastic side effect is it will give you an improved bhp increase on other parts.

EB Turbo upgrades

The more air to get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains.

NA (naturally aspirated) engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your EB

If the engine has a turbocharger upgrades are simpler to install and we find turbocharged engines are built using harder and stronger components.

There are common areas of failure for every engine, with some being extremely strong and some only able to handle stock power

We recommend you find these limits and install higher quality components to survive the power.

We've seen car owners spending a loads on turbo upgrades on the EB only to have the whole thing explode on it's first outing after it's completed.

Large upgraded turbos will usually suffer low end lag, and little turbos spool up really quickly but won't have the top end torque gains.

In the last 10 years the world of turbos is always moving on and we now see variable vane turbos, allowing the vane angle is altered according to speed to lower lag and increase top end bhp and torque.

Twin scroll turbos divert the exhaust gases into two channels and flow these at differently designed vanes in the turbo charger. They also increase the scavenging effect of the engine.

It is common that there's a limitation in the air flow sensor MAP/MAF/AFM on these engines when loads more air is being pulled into the engine.

We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor sapped bhp at a much lower level.

Adding a supercharger or additional turbo will make large performance gains, although more difficult to setup. We have a twincharger performance adding guide if you want to read more.


Don't forget to improve the fuel delivery when you are increasing the bhp and torque - it makes the car more thirsty. Most tuners we speak with say to be generous with your flow rate on the injectors.

The accepted safe increase is to add 20% capacity when fitting an injector, helps cope with injector deterioration and gives you some spare capacity should the engine need more fuel.

EB Exhaust

You may need to improve your exhaust if the existing exhaust is creating a restriction in flow.

On most factory exhausts you'll find your flow rate quite well even on modest power gains, but when you start pushing up the power levels you will need to get a better flowing exhaust.

Sports exhausts will certainly help air flow out of the engine but do not go too wide or you could very well end up with a reduced flow rate. So generally speaking, keep to 1.5 to 2.5 inches for best results.

Typically exhaust restrictions can be located the catalyst installed, so adding a faster flowing performance catalyst removes the restriction. We note that performance cats perform similarly to decats and have the added benefit of keeping your car street legal, as decats or catalyst removal is illegal in most territories for road going cars.

Weakspots and problem areas on the EB

The EB engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. Few problems should happen as long as they are regularly serviced and maintained.

Carbon build up in the head, particularly around the valves which will sap power or create flat spots, this is a larger issue on direct injection engines but should be looked out for on all engines. We have tips on removing carbon build up.

Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to this engines design, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue.

Regular oil changes are vital on the EB, especially when tuned and will help extend the life and reliability of the engine.

The idle control valve can fail causing erratic idling, but a replacement fixes this.

If you would like to know more, or just get some friendly advice on Tuning your PSA engine please join us in our friendly forum where you can discuss EB tuning options in more detail with our EB owners. It would also be worth reading our unbiased PSA tuning articles to get a full grasp of the benefits and drawbacks of each modification.

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