Hi, I know the Gap bluetooth iid tool at circa £400 is the bees knees for diagnostics for our cars but how useful are the £10 flea bay ones, very limited functionality or not? Likely to irratrevably alter or damage module settings? I already use a Launch 123 which is pretty good but not very handy and portable, I thought a dongle left plugged in situ might be handy?? 2008 L322 Vogue 3.6 TDV8 in Java Black with parchment and Navy interior. 125000mls.

I used to be indecisive and have a split personality... but we are ok now...I think?