Thanks for the post. As said above, the factory guages are all slow and I don't know if any 2 are the same as I have 2 E-Bodies with the rallye guages and both read different with the same basic oil psi. For anyone interested, I run an Electrical VDO oil press guage and it reacts quickly. If you didn't see the wires you wouldn't know it was electric by the speed at which it reacts.