now that i have them, i cannot imagine enjoying my truck without them. not to mention the fact that i have been able to catch problems before they turned into huge ones. Most notably, months after installing my edge (kept it at 0) i watched my fuel pressure go down untill my LP went TU. had i not had guages, i would have for sure burned up the VP. guages also helped me to diagnose a bad map/boost sensor. i had no CEL's, and untill the install, i wasnt aware that my computer was not seeing ANY boost...only that it felt alot slower than it should.

sure, they may be expensive, but they will ultimatley save your alot more in the end. i cant even imagine not having at least a FP sensor!