Hi all im new! I have a 2000 audi a4 tdi. It seems far to sluggish bottom end and it would be great if it had more pickup. I have heard about various ecu remaps and boxes available but I am getting more and more confused. Here is what i have been looking at so far: Van Aaken: http://www.vanaaken.com/europe/index.asp?select1=Audi&select2=A4-V6+2.5+TDi+++1998-1999 Tunit: http://www.tunit.co.uk/tunit-product-range.php#V-VP Some cheaper devices on ebay: http://cgi.ebay.co.uk/TDI-Diesel-Tuning-Box-PD-PRO-VW-AUDI-SEAT-SKODA-FORD_W0QQitemZ300029041673QQihZ020QQcategoryZ32094QQrdZ1QQcmdZViewItem http://cgi.ebay.co.uk/TDI-Diesel-Tuning-Box-PD-VW-AUDI-SEAT-SKODA-FORD_W0QQitemZ300029041899QQihZ020QQcategoryZ32094QQrdZ1QQcmdZViewItem After reading through other posts on here a lot of good things have been said about remaps. What i would like to know is: Which is the best thing to go for? Will it improve the cars bottom end performance? Obviously the cheaper the better but I want to go for something that will not damage my car etc etc.. Advice appreciated. Thanks in advance.