Here's me in defence of the tuning boxes again, but no wonder when so much conjecture and nonsense gets said about them. Digital tuning boxes do not 'fool' the ECU. As I have said in other threads, the idea that they are resistors and a few other analog components in a box is a lot of nonsense - it might have been true of the old 'pump deuse' VAG engine mods but those mods are decades old and never ever applied to Alfas - common rail diesels need something more sophisticated.
Digital boxes work by substituting the inputs to and outputs from the ECU with other values - the ECU has no way of knowing that it is being 'fooled' and any reaction to the box (such as triggering overboost or fuel pressure fail-safes) is exactly the same as would happen with a remap (there is another thread going on at the moment on dodgy remaps that pretty much puts to bed the idea that they are a panacea for extra power).
Yep completely agree with you. I've had many tuning boxes over the years and the new generation are good at what they do and great value for money. This nonsence about the ECU 'learning' and the power returning to standard is just remappers poppy c0ck! I have plenty of RR print outs to prove otherwise from over the years, and I've done a couple of hundred thousand miles using boxes and they've been faultless.
The resister mod I elluded to in my earlier post was regarding how Mango's increase the boost pressure. It works but they're a bit cheeky charging a couple of hundred quid for it. They also sell a 'Pedal Box' which improves throttle response, again this works well but is way over priced compared to other suppliers.
The new generation of tuning boxes have a second loom wire that runs to the pressure sensor and the box then controls the boost too. I recently fitted one to a BMW 330d and it absolutely transformed the car. Acceleration was proper laugh out loud it was that quick!!
I have an Alfatune remap on my current 'sport' and it certainly goes well enough, and you can tell it's better executed and more progressive than the boxes I've had on this engine in the past. I'd definitely have another...
I guess at the end of the day there will always be an arguement for both... and like Aldi Tomato Sauce vs Heinz... I like both!
Think of a box as more of a generic remap for your 'type' of engine. It works well and is a cheap way to extra power.
Remap's done properly and tailored to 'your' engine in 'your' car will always be better because a good tuner can liberate and make the most of any mods you may already have and therefore tailor the tune accordingly. Unfortunately this will always mean they cost more money, but you're getting specialist time, advice, and an individual service... kinda Co-op dispensed drugs vs Doctors prescription