nothing is reliable.
only stuff you build to be reliable is reliable.
If you slap on a gay kit, it won't be.
If you slap on a 'name brand' kit, it won't be.
but, if you take the time, do it right, and TUNE it, it will be reliable.
PSI means shit. theres a post in this forum that is pinned... read that.
a t-.00001 boosting 23123123 psi makes about 2 horsepower.
a t-333 boosting 1 psi makes about 4324234 horsepower.