Then there is a third box possible that connects to the turbo boos pressure, and can adjust that during the range.įor me the main advantage is that when I take my new car in for a service, I easily remove the boxes.When the dealer does a software update there is no remap that gets lost.And I can adjust the setup for my driving desires, for example the majority of my driving is by myself on the motorway, but perhaps three times a year I tow a 2.5Tonne rig with powerboat on it, and I just want lots of lowdown torque.Don't care about high range power at all.īut yes sure, those aren't the £100 boxes you find on ebay.I had a £79 one and got me constantly in limp mode.I've done 34k miles with the proper one now and not a single limp mode.Saved about 17% in fuel costs which easily covered the purchase with profit in year one, so much more profit for the next two years.And lots of smiles Oh and at the end you can sell a box like that as well.

I'm running a set inline with the actual injectors which avoids on my particular model the computer 'relearning and negatively compensating'.Then once that was working, I put another box on the fuel pressure sensor of the common rail as now the injectors stay open longer it can more easily take the increased pressure which without doing the other step could cause limp mode depending on what state of tune your engine is too start.Again with four maps on the box depending on what kind of driving style you like. I think the piggy back system are being a bit over generalised.Sure eBay is filled with boxes that don't have much in them and are very generic, like those transistor that they sell to put inline with the MAF too fool the computer it was colder.īut then there are much more sofisticated systems as well with multiple maps and power settings.Like DTE Systems for example.

Dp chip tuning