I do have the resistor that came with the helix combo up/downpipe from gruppe-s, and it seemed to work fine for about 3 weeks.... but then when i added the boost controller, it came on after about 20 miles of very non-aggressive driving.. "granny style" resetted it and it would go back on after a while -- oh well, im guessin da resistor got fried, fell out, or somethin, if not, i think i'm gonna go ahead and try that one from pony express.. thanks for the tip guys