Reversed Throttle Bodies Myth- BUSTED!

We know a lot of people SAY that installing your throttle bodies backwards increases the torque and horsepower of your car... but is this really true? We did some tests on our dyno and wanted to share our findings. Keep reading for the results!

Lots of companies install throttle bodies in racecars backwards. We at Guhl Motors have always questioned whether this did anything for the car, so we decided to test it.

We ran two tests on our dyno- one with the throttle bodies their normal, front-facing way, and one with them backwards. After a few hours of thoroughly tuning each combination, check out the graph below for the results! Open the image in a new tab for the best clarity.

The blue line depicts horsepower, and the green line is torque. The dotted lines are front-facing throttle bodies, and the solid line is the throttle bodies installed backwards.

In this test, there does not appear to be any benefit to turning the throttle bodies around. Let us know if there is anything else you would like to see tested!

One comment

  1. I would be interested to see the 37h vs the 14j boots with a restrictor plate in place. Then maybe a red TSO with some rubber hose connected to it.

Leave a Reply

Your email address will not be published. Required fields are marked *