E-bay Power Box for diesel engine

[slowrider]

Hello,I'm from Baltic States, so sorry for my english. I 'm an owner of nissan almera'00 2.2 Diesel engine. I'll try to explane, what i want to do. There are k&n filter, chipped ( or remapped) ECU and stright exaust without cats installed in my car. Next step I wish to install top mount intercooler from Impreza. BUT!!! Ecu read only crancshaft position sensor, water temperature sensor, MAF and trottle position sensor. Tehere is no sence to install intercooler without fuel quantity increasing. Now the question..
Is it possible to increase fuel injection quantity using power boxes ( e-bay price aprox. 90JJJ). Following specifications, most of them has two adjustable mode: eco and power. How i understend, these modes only decrease or increase fuel injection. Is it wright? Does anybody use such device? What can you advise me to do resolve this problem...

 

[edk]

Welcome to the AOC I have a 2.2 DCi.

I'm not too sure how the tuning box might work in your Di (direct injection) system.

For the DCi (common rail injection) the tuning boxes control the fuel pressure by plugging directly into the fuel rail and monitoring fuel and combustion to inject the optimum ammount.

I would imagine you can buy boxes for your engine still but I would stay away from Ebay as they usualy arent any good. You wan't something more clever like a digital tuning box. The box I have is made by Diesel Power Tuning and is simply amazing! More power, smoother delivery and more miles per tank of fuel

 

[slowrider]

Thank you for the answer. I've a big doubts about power boxes too. As well my car's ECU is remapped, and I have no ideas how it will work with power box))))
What do you think about bigger injectors? Theoritically, this is the most correct way to increase fuel quantity. What can you adwise? Problem is Almera not a popular car in our country . There are no people with this engines tuning experience. So it possible, I will ask a stupid questions.))))
What the mods do you use to get more power from Di or Dci engines at all?

 

[edk]

Unfortunatly the N16 diesel Almera is also not very popular for modifying. I'm tuning mine and learning as I go, but a lot of research comes from what other Diesel tuners do to engines like the TDI, HDI, TDCI etc. Injectors would be a good bet, but I wouldnt know of any you could use. For mine it might be possible to use the injectors from the Navara's YD25 engine.

So far for engine mods I have a custom exhuast, tuning box, and have larger intercooler and custom pipes on the way. You engine doesnt have an intercooler as standard (as you've mentioned) but I highly recommend you install one. Your ECU will inject more fuel to compensate for the higher air volume, especially as you have a remapped ECU. You may find that your injectors are able to put out enough fuel for your needs. It would be a good idea to tweak you remap after though. Another option is Water Injection. This works well on diesels and you could see 15-20bhp increase. This would negate the need for an Intercooler though but it's always good to have one there for backup or when the water/methanol tank runs dry out and about.

You could also install a larger VNT turbo. This would see huge gains with a remap. With common rail injection fueling might not be such a problem because of the high pressures involved. I'd imagine this means that on standard injectors a large amount of fuel can be dumped into the cylinders compared to the standard map. I guess you're only limited but how much pressure your injectors can take? With you're injection system though I wouldnt know for sure I'm afraid.

There's are a number of small mods you can do, some that are generic for all engines. EGR blank, lightweight pulleys, lightweight flywheel, induction kit, cold air intake, cold air feed, lighter wheels, weight saving by stripping, better oils for engine and gearbox, etc etc. Theey're all bound to help make you a bit quicker, it's justa question of how much you can afford and how far you want to take you're tuning

Try and find a Turbo Diesel tuning club/forum in your region. There's one for this country and I find it very useful.

 

[slowrider]

. You engine doesnt have an intercooler as standard (as you've mentioned) but I highly recommend you install one. Your ECU will inject more fuel to compensate for the higher air volume, especially as you have a remapped ECU. You may find that your injectors are able to put out enough fuel for your needs. It would be a good idea to tweak you remap after though. Another option is Water Injection. This works well on diesels and you could see 15-20bhp increase. This would negate the need for an Intercooler though but it's always good to have one there for backup or when the water/methanol tank runs dry out and about.

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For examle, intercooler is installed. How ECU will detect the bigger air volume, if there are not MAP sensor or air intake temperature sensor in the Di engine? Only MAF sensor is. And it doesn't matter for MAF have engine intercooler or not, anyway datas from this sensor will be the same. This is a reason, why I want to increase fuel injection.
If i mistake, correct me please.
This is not so important to get more power from this engine, but anyway more power under the throttle pedal is very good feeling))).