load bearing dyno read lower but give a more true readout..
imo
it is also a better tool for tuning a street car sinceu can load cells and get the air/fuel better on part throttle.
allot of shops will give u a break if u do not want a wideband used. sk8 is a great guy at showzone. i have been to his dyno days and it is usually a fast process getting on/off dyno.
fwiw.. a dyno is just a tool to give u an idea where u are at.. the real heartbreaker is your et/traps