Remap or power box

[Geoffdy]

any one got first hand experience of either on a cdi 200 just wondering which way to go .

 

[V6Matty]

A remap is always the better choice unless you look at a box that hooks into each point of the engine and drivetrain, anything less and that box is just fooling sensors and giving ECU's incorrect information

 

[LostKiwi]

Remap every time - especially a live map on a rolling road.

 

[alexanderfoti]

Remap all day every day

 

[Gazwould]

Best is a remap and a tuning box.

 

[alexanderfoti]

Best is a remap and a tuning box.

More is not better in this case

 

[Gazwould]

Pulls the timing and fuel to the best possible .

 

[alexanderfoti]

Pulls the timing and fuel to the best possible .

All the tuning box does, is food the cars onboard sensors that there is lower than normal boost for example, or lower than normal rail pressure, this causes the feedback mechanism to increase it beyond standard.

You can do more with a re-map than you can with a tuning box, as you can only go so far before you reach a limit of a sensor value.

A tuning box is always a compromise.

 

[Gazwould]

The tuning box maximises as derv power isn't fussy about fuel / air ratios unlike petroleum .

 

[V6Matty]

Not true, even Diesel engines have that sweet spot like Petrol where fuel, air and compression create the best bang.
Look at a rolling road print out from a standard factory map it’ll be conservative but a decent curve, then look at tuning box in the same road, the printout will have big spikes and dips, then have a map and you find a perfect curve for that engine/gearbox and it’s max potential power.

 

[Gazwould]

For the absolute maximum , remap , tuning box and obd2 tuner .

 

[V6Matty]

Again, not true, you'll not gain anything extra by doing all that except put your car into limp mode

 

[Gazwould]

Lol , you guys are calm , no flames !

I'm having a giraffe.

Tuning boxes belong in the bin..


https://www.p-v-e.co.uk/tuning-boxes/


https://www.remapper.co.uk/ecu-remap-vs-diesel-tuning-box/

 

[GAD Tuning LTD]

Not true, even Diesel engines have that sweet spot like Petrol where fuel, air and compression create the best bang.
Look at a rolling road print out from a standard factory map it’ll be conservative but a decent curve, then look at tuning box in the same road, the printout will have big spikes and dips, then have a map and you find a perfect curve for that engine/gearbox and it’s max potential power.

Absolutely correct! A non smoothed or corrected plot of a tuning box you will see the ECU fighting it! Constant peaks and troughs and of course possible limp mode if a limiter is exceeded most common would be rail pressure under 100% load exceeding the factory rail pressure limiter and car will just say nope.

Also i'm not sure how it has become a thing that diesels don't have a good AFR I have been seeing this a lot in other threads saying fuel ratios are not important in diesel! Its important in all combustion fuels.

Many thanks

 

[Rotorhead500]

Absolutely correct! A non smoothed or corrected plot of a tuning box you will see the ECU fighting it! Constant peaks and troughs and of course possible limp mode if a limiter is exceeded most common would be rail pressure under 100% load exceeding the factory rail pressure limiter and car will just say nope.

Also i'm not sure how it has become a thing that diesels don't have a good AFR I have been seeing this a lot in other threads saying fuel ratios are not important in diesel! Its important in all combustion fuels.

Many thanks

And also a large reason why so much time & money went in to developing piezo-injectors to get far more accurate control over quantities injected, and how's its injected!

 

[skyhiyatrist]

Just got a w203 2006 coupe 220cdi with only 36k on the clock, been think bout getting it remapped. My mechanic says yes. Best price locally is £350 full map on a rolling road, with printout an I can stay and watch.

Sent from my LYA-L09 using Tapatalk

 

[GAD Tuning LTD]

And also a large reason why so much time & money went in to developing piezo-injectors to get far more accurate control over quantities injected, and how's its injected!

Once again absolutely correct! The development that went into all modern direct injection systems for fuel atomization control for not only performance but also emissions targets this is also the reason have you seen an injector for most high powered petrol's now? They are huge just like diesel injectors dealing with high pressure.

Many thanks

 

[LostKiwi]

...have you seen an injector for most high powered petrol's now? They are huge just like diesel injectors dealing with high pressure.

Is that not a result of increasing prevalence of direct injection on petrol engines?

 

[GAD Tuning LTD]

Is that not a result of increasing prevalence of direct injection on petrol engines?

Yes exactly the technology is more efficient but down side is increased Nox production and possible coking up like the Audi FSi tech.

Many thanks