I did my own remap, based on information that I got from several A2OC members.
I used some free software called VAG EDC15P+ Suite (which is excellent and free) and WinOLS test version (which is free to use)
I spend quite some time understand the standard maps on the TDI that Audi provided, I also obtained from a fellow A2OC member a later version of Audi's standard map. It appears that Audi used two different software versions through the life of the A2's TDI 75BHP engine and whilst they are similar there are slight differences
Once I got my head around the maps I did a comparison between the standard maps and some remapped files that I obtained from fellow A2OC members. From this I was able to establish the maps that are changed when a remap is done.
I have taken an average of the values changed on the numerous remapped files that I have, and have made adjustments to my original map using these average values. I have gone on the conservative side with the changed map values, so will not have got the maximum remap benefits, but then again my total cost for my remap is the £10 I paid for the mpps cable needed to read from / write to the ECU
I am very happy with the results even though I don't know the 'actual' numbers being output by the 3 potter.
VAGSuite as a predictor in it, run against the original Audi map it stated 82bhp, with 224Lbft which is around 9% higher (BHP) than it should be (so accepting this 9% error)
Run against my modified map it predicts 117bhp with 287Lbft so applying the same 9% error (BHP) this is more likely to be 107bhp
The predictors torque numbers are some what higher on the Audi original and also on the remap, it appears to be out by a ratio of 1.55 times, so applying this to the predicted figures it is really 184Lbft which is a very nice increase, moreover the torque curve is much flatter and wider than the original leading to an easier driving experience.
The engine also revs more freely and pulls well to near 4000rpm, where as before it was dropping off after 3500rpm, but being honest there is so much torque now available there is no point or need to rev past 3000rpm
Fuel economy as not been a made any worse and may indeed be slightly better, I am getting a regular 63 to 65 MPG tank to tank, some longish motorway trips in this at around 75mph average and commuting to work 8 miles each way, I don't thrash it everywhere, but equally I'm driving like miss daisy either
All in all I am very happy with my remapping efforts, the A2 is much more pleasant to drive and overtaking is not effortless and it will certainly raise the odd eyebrow of the sportier cars when this 15 year old A2 doesn't disappear from there rear view mirror
I am 1800 miles so far on the remap and no problems so far
I'm not saying that this is as good as a custom map on a rolling road, because quite simply it isn't, but then again it didn't cost me £300+, I'm sure there is a place for both.
I would like peoples opinion on the EGR - at the moment I have left it operational, but I have the option to map it out. None of the remap files that I got had it mapped out, which is some what interesting because everything you look at regarding remapping seems to suggest that the EGR is removed
Should anyone on here want to follow in my footsteps then drop me a PM