My intercooler has been working great. Intake is always barely warm to the touch. I will be installing the FrankenCIS soon to dial the tuning and be able to log the sensors to see what charge temp is. Currently the car warms up poorly, I assume because of the removal of the back pressure valve.
Next step is to relocate the oil cooler with a thermostatic sandwich plate. Was also thinking about relocating the miserable oil filter to a remote site. Either way, oil cooler will be much bigger, and on a thermostat so the oil always stays the right temp. It will also one less thing to be in the front charge cooler, oil cooler, condenser, radiator stack. I just have to find a place to put it. I was thinking two, one at the exit of each of the rear lower air ducts (brake coolers perhaps) or perhaps one on each side of the air ducts cooling the engine compartment.
Finally I could do a huge one at the exit of the engine bay below the glass, but I would need to measure the exit temp to make sure it is a cooler and not a heater.
Whatever the case, i am 99% sure behind the intercooler radiator is the wrong place to put it, especially with the distance the oil has to travel.
1988 Lotus Esprit Turbo
2002 Lotus Esprit V8 25th Anniversary #008