Project Toyota Supra MKIV: Part 7 – Choosing the right intercooler


Here’s the old intercooler this Supra had, lying on the Michael Schumacher floor (still praying for you and your family!).  When I tested it against the factory side-mount, tube-and-fin intercooler years ago, the power went from 347whp at 16 PSI to 359whp at 15 PSI.  Then, when the stock twin turbochargers' boost was matched to the 16 PSI baseline, it was up to 374whp with no other tuning changes—not a bad gain indeed at that power level. 

We mentioned earlier this old care is 4-in longer than our new ETS core, but look at what needs to happen to the end tanks for a proper Supra fitment.  Notice the sharp angles the air would have to make to get to the top couple of rows.  It would be interesting to see just how much actually gets through.

We’re not knocking our previous intercooler.  It was rated to 600hp and, even at a daily-driven 650 wheel-hp, it proved quite effective with a peak dyno of over 750whp.  But it was installed on this car 10 years ago.  It’s simply an older design.


Here’s looking inside one of the end tanks, or what the boosted air sees going in and out of an ETS intercooler.  With the additional heat plates, the efficiency is sufficient enough to loosen up the internal fin design for maximum airflow and a minimal pressure drop.

The welds on an ETS intercooler are consistent and clean.

The optional ETS intercooler “kit“ includes mandrel-bent steel piping, 4-ply silicone couplers, hardware (including AC, power steering and lower intercooler brackets), and a coolant overflow relocation tank.  You can choose from two paint finishes, like this black wrinkle finish above…

…or this ultra shiny polished finish, which we chose to go along match with the rest of our shiny 3.0-liter motor.

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