BorgWarner S366SX-E Tested with Big Fuel! 714 Horsepower!

borgwarner dyno test results

A little while back, we tested the BorgWarner S369SXE with a wastegated .80 housing. To give the BorgWarner S366SX-E a fair chance against the 369, we tested it with the same fuel as the 369 on the 12V Junker Drag Truck. Read on to see how it performed in our tests.

Dyno Test: S366SX-E Turbo | 714 HP! | Power Driven Diesel

The setup this time is the BorgWarner S366SX-E with a .80 AR wastegated housing. We will be running two tests, one unloaded with just the weight of the dyno and one with the dyno loaded to 5,500lbs.

Test 1: Unloaded Dyno Test

borgwarner dyno test results

The graphs show it produced 714 horsepower and 1,530lbs of torque. These are great numbers coming out of the BorgWarner 366 with the .80 housing. We started the pull well below the efficiency range for this turbo and took about 9.8 seconds to reach peak power.

borgwarner s366 power graph
borgwarner s366 time graph

We then compared it to the BorgWarner 369SXE. The following images show how these two turbos perform compared to each other.

borgwarner s366 comparison graph

The 369 definitely makes more horsepower: 748 vs 714.

BorgWarner S366 Time Comparison

By time, the S366SXE makes peak torque about 1 second faster in our unloaded test. Lets see how it performs in test 2.

Test 2: 5,500lb Loaded Test

In the loaded test we lose a little power due to heat soak and make about 709. But, we do see torque go up to 1,620.

borgwarner test 2

Comparing it to the 369SXE, it looks like Borg’s 369 makes a little more power, but the 366SXE spools up a little faster. This is as we would expect and is why we love the SX-E 300 turbos, you can really get a turbo to perfectly match your power goals anywhere from 500-750HP!

borgwarner test 2 comparison
borgwarner test 2 time graph comparison

These are both great turbos with this housing setup. You can pick up either of these turbos up in our shop right now for a great low price.

If you have questions about which of these is right for your truck, feel free to contact us at 435-962-9555 or text us at 435-962-9506 With Any Questions. Email us at customerservice@powerdrivendiesel.com for more information. We’re here to help you get the right transmission, turbo, or other performance part for your truck.