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

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.

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

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.

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

The 369 definitely makes more horsepower: 748 vs 714.

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.

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!

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@pwrdrvndsl1stg.wpenginepowered.com for more information. We’re here to help you get the right transmission, turbo, or other performance part for your truck.