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Old 09-26-2016, 12:02 AM   #24
phxsubaru
Scooby Newbie
 
Member#: 441528
Join Date: Feb 2016
Location: Phoenix, AZ
Vehicle:
2015 STI

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Quote:
Originally Posted by Profoxcg View Post
someone asked on another thread if I am running the undertray on the car. Leads me to think, he or she may not think that is a good idea.

Are you? does it make a difference in temps?

I thought it would be beneficial to run the car with one because it :

1- keeps the engine bay clean and debris out
2- acts as diffuser (less turbulence under the car)
I do believe the under tray is beneficial in Stock form. It appears to be shaped to help direct airflow. However I do not use it .I'm running an APR splitter that goes all the way back to the wheel well openings. I modified my stock under tray to still fit in, but the reality was it only went back about 1 foot past where the splitter ended. I saw no difference in Temps once I removed what was left of the undertray. In my case it just seemed like a matter of time before what was left would fold under the car and rip off at speed. If I did not have this splitter I would still be using the stock undertray.
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