they are a good piece of kit holds at 1 bar perfectly just spikes a little bit when it goes over 6k rpm dont think thats down to the boost controller tho
is the one i have cant fault it http://www.tm-developments.com/index.php?m...products_id=475 and this is the new version its a boost controller , turbo timer and boost gauage all in one http://www.tm-developments.com/index.php?m...roducts_id=1087