As far as I know they are the same... I used a 5ktq unit and haven't had any problems... Eddy 1x86 4ktq-h&r's, bilsteins, 3" exh. etc, etc.. 1x86 4kq- too slow, too soft 1x84 vw camper-even slower _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com