Here is the first test of using my homemade air intake cold air box.
The test was versus the box and stock air intake, and measuring the Intake Air Temp (IAT) via a ECM diag tool that recorded and stored the results.

Outside air temp was 72 degrees for both tests and was from engine dead cold to driving the car at about 65 MPH and just hitting normal operating water temps.



As you can see with the cold air box the IATs were about 30 degrees cooler.

Without the box, leaving the air filter in stock position but with a hole cut in the shroud that seperates the filter from cooler airflow the IAT was about the same as with airbox on, but engine seemed to surged once in ahwile.

Next tests will be at high speed.

John