DTUK Testing Maps
After each setting was tried across the same 5 min thrash of straights and slightly twisty stuff, I checked the ECU for errors. On all maps, the same power figures are reached, but the power delivery characteristics are altered (as per the supplied instructions from DTUK)
Map 3 +2 Selected
the first thing I noticed was audible turbo whistle. This is supposed to be a more even power increase across the range so I am assuming that the waste-gate (if it's still called that) is being leveraged to regulate the boost and power to give a more even build to the max numbers. It is a smooth map that is deceptive in terms of how quickly you are accelerating as it has little drama attached - it just gets on with the job without any fuss. No errors
Map 3 +3 Selected
I didn't notice any major difference between this and the +2 setting. It is slightly more torquey I guess but not a night and day difference. No errors.
Map 2 +0 Selected
You feel the torque rising fairly earlier and with more of a peak lower in the rev range but flattens off fairly quickly to something more gradual - a bit of a halfway house between Map 1 and Map 3. It feels more sporty than Map 3 for my tastes and I prefer it to Map 3. No errors.
Map 2 +3 Selected
I didn't notice any major difference between this and the +0 setting. Again, a little more torquey but only a subtle difference but noticeable. No errors.
Map 1 +2 Selected
Now this is my kind of map! A lot more responsive and more akin to Revo power delivery that I have had on a 1.8 S3 and PD150 Leon FR in the past. A little delay after pressing the pedal and then in it comes - pretty hard. On the salty roads around these 'ere parts it gave the traction control something to do in 1st and 2nd gear, but then 3rd was a wave of torque to the red line. Awesome and everything I had hoped, but more than I had expected. No errors.
Map 1 +3 Selected
Subtle difference - perhaps a little more shove over +2, but not much more. However, this mode did throw me a boost error code but no EML. I accidentally deleted it but will try and trip it in again when I have time just to list it.
Now, before panic sets in and a flurry of negative feedback is assumed, I have to state very clearly that for me, this would be expected behaviour with a tuning box (but not on a remap). My reasoning is that a tuning box causes the ECU to be told lies about the output from the sensors that it captures. It therefore tricks the ECU into pushing more fuel, more boost, amending timing etc (or whatever it does!) so you have to expect that on the upper limits, some cars may register error codes. This is the upper limit of this map and it feels pretty aggressive. I have cleared the codes, backed off slightly to the +2 setting and all is well. In my view this is not a negative at all.
EDIT: - I have tried a number of subsequent runs on this setting and no error codes have been logged at all. I've left the above text unedited as this is what I experienced. I also noted that when you drive the car on Map 1 +2 for a while as we have been, Map 1 +3 is very slightly flatter on my car than +2. I am leaving mine on Map 1 +2 as my preferred setting, but this may vary from car to car.
There are some untested settings but given that I tried a wide range I don't see them adding anything to the
review so didn't feel the need.
