What ranges of pressure loss can be expected? And what is acceptable?
For good solid performance, the pressure loss across the intercooler core should be kept to less than .5 to 1.0 PSI. Count on tanks and plumbing adding another .5 PSI to 1.0 PSI. If any pressure in excess of 4 PSI is measured, then the intercooler is not suited for the job and certainly harming the performance.
