Thursday, November 26, 2009

P-Tronic - How it works

I always wonder... how P-Tronic works. So, I did some research to find out and this is what it does...

The unit is connected between the calculator and injection system. All signals come from the car's ECU. The information they receive is analysed, electronically modified, then sent to the injector pump, to the rail or directly to the injectors. This means the P-Tronic does NOT increase the boost of the turbo directly. What it does is that, it increases the boost of the fuel pressure at the injectors.

Once there is higher boost on the injectors, the fuel will be richer. The car's ECU will sense that and will boost the turbo pressure to compensate and equalise the fuel mixture, hence, the car becomes more powerful. The only problem that our fellow friends are facing is that the Blow Off Valve will leak because it cannot handle the pressure of the power, when its being set at level 7. This would mean that, once that happens, the engine will fail due to the fuel being too rich, and the DEPOLLUTION sensor will sense that and give a error, and the car moves into LIMP mode.

The only way to solve this problem, is to change to a better Blow Off Valve. Peugeot don't make the BOV. The standard PSA/BMW blowoff valve, fitted in Peugeot 308 THP 140/150/175 (GT), Peugeot 207 1.6THP (GT/GTi/Rallye/RC) and Mini Cooper S R56 1.6T. It is made by Pierburg.

Pierburg blowoff valves have common internal parts. So the internal parts of this valve are interchangeable with VAG (audi/vw/seat/skoda) TFSI 2.0 blowoff valves.

However, the connector is not the same, which will need some modification if you change the BOV.


  1. Dear sir,
    I read your article with interest. Our company provides remapping services, and one of the most interesting car we are doing currently happens to be a Peugeot 308THP 140hp.

    I wonder if I could also link my website explanation about Tuning Box to this weblink?

  2. Alan, what bov did you reccomment?

  3. I have a Peugeot 3008 THP 2012 and I bought a P-tronic powerbox.

    I received it and follow all the instructions as shown in the manual. The power increase was almost nothing or nothing.

    I wrote many e-mail to P-Tronic asking for help and they did not even answer my e-mail.

    They are a company with no respect for the client and no after sales service. Very disappointing.

    If you decide to buy a P-Tronic, you have to know that you are doing it at your own risk. They have no support at all.

  4. Along with ECU Remaps's technology partners ECU Remaps have tuned 10’s of thousands of vehicles and completed thousands of miles of testing, ECU Remaps are that confident that ECU Remaps guarantees and warranties. ECU Remaps believe are second to none.Unfortunately it’s so easy to set up a remapping business these days, people buy a van, set up a website and download files from the internet. ECU Remaps is also the fastest way to blow up an engine. ECU Remaps ARE NOT THESE PEOPLE.

  5. has anyone managed a mod on the vag blow off valve for the peugeot 308 thp