A look at the DIY Aero on Scotty's STI Race Car

Last winter, Scotty went through and re-worked pretty much every aero element on his 2011 STI race car. He built a new front splitter from scratch using Professional Awesome splitter diffusers, added hood and fender ducting, and made custom ducting both in front and behind the radiator.
Then in the back, he made completely new chassis wing mounts that improved the placement of the 9 Lives wing, and made a rear diffuser from scratch.
We take a look at all the changes that Scotty made to his race car, and talk about the results that he has seen with all of these changes and adjustments in the events that he has run this year.
Thanks for watching and Stay Tuned!
For more details, follow Skhate23 on Instagram

[@billyrosewood5474]

Thanks for this video. It is great to see how aero changes can improve cars being used in grassroots Motorsport. Great job!

[@FlatironsTuning]

Thanks very much!
Thanks for watching and Stay Tuned!

[@flspirz7169]

Awsome guys! I love all the thought that went into his arrow.

[@FlatironsTuning]

Thanks very much! Stay Tuned!

[@Crazy4wheels]

Thanks for sharing! Very helpful information.

[@FlatironsTuning]

Thanks very much and glad that the video helped.
Stay Tuned!

[@1atinlove]

Its like your in my head. Im trying to mock up, some ducting of my own. I wanted to funnel cooler air to my intercooler, radiator, and oil cooler.

[@FlatironsTuning]

Excellent! Remember to think of how to get the air where you need it, and then how to get it out from under the hood as well.
Thanks for watching and Stay Tuned!

[@ninelivesracing]

Love you guys you nailed it.

[@FlatironsTuning]

Thanks very much!
Stay Tuned!

[@chucka187]

I used foam core and covered it with fiberglass. So far so good.

[@soniromanov]

Way better than plywood...

[@TheLastS209]

Thanks for the video. Have you thought about adding a flat foor?

[@louisGauto]

Nice!

[@FlatironsTuning]

Thanks for watching and Stay Tuned!

[@Pap3rPlanesss]

Which Race Louver fender vents is he using! been looking for one on my WRX as well

[@0JThomps0]

I love this stuff. You could probably use height sensors like what is used by airlift suspension and log those vs speed to see the effectiveness of the aero. Another idea may be way out in left field. Can you use active aero based on brake hydraulics and or steering hydraulics?

[@FlatironsTuning]

Thanks for the comment. Height sensors would be a very good way to measure some of the effectiveness of the aero. Provided you haven't changed spring rates.
Active aero gets really complicated really quickly, and there are a lot of valid safety concerns that come up related to it. That is the reason that most motorsport classes don't allow it.
Thanks for watching and Stay Tuned!

[@0JThomps0]

@@FlatironsTuning I appreciate your response. Keep the good content coming.

[@jonmortensen9990]

What thickness alumanate did you use on the diffuser? Looks like you pie cut a piece of angle aluminum to attach the strakes. Is that right? Getting ready to make one, this is a very helpful video, thank you for sharing your process.

[@jonmortensen9990]

Think I answered this one myself. Looks like it's all 6mm.

[@FlatironsTuning]

Thanks for your question, and thanks for watching. In this case, because Scotty was insetting the alumalite into the plywood, he was using a 1/4" thickness.
Good luck with your splitter and Stay Tuned!

[@anotheryoutuber_]

who needs wind tunnels diy shipping container and industrial fans

[@FlatironsTuning]

Right?
Thanks for watching and Stay Tuned!

[@unlimitedslip906]

Ignoring efficiency improvement, wouldn't moving the wing back for leverage cause lift on the front axle?

[@FlatironsTuning]

It certainly could. That is where you need to balance the rear downforce with the front.
The two key pieces of aero that you need are a front splitter and a rear wing, but you have to also make sure that you can get them to work together to get you the balance that you need.
Hope that helps and Stay Tuned!

[@justinpluim3075]

what material did you use for the air dam on the front splitter?

[@FlatironsTuning]

That is HDPE plastic - High Density Polyethylene plastic. It is available in sheets, and should be available in decent sized sheets. We get it in 4' x 8' sheets and use it for all sorts of things. It is great for mud flaps for the rally car :-)
Hope that helps and Stay Tuned!

[@justinpluim3075]

@@FlatironsTuning ok thanks. what thickness did you use?

[@FlatironsTuning]

@@justinpluim3075 We used a 1/8" thick piece there.

[@brianthiel1488]

Some shade tree stuff going on here

[@pabauza]

What wheels are those? Thanks

[@FlatironsTuning]

Thanks for your question. Those are Enkei RC-T4's on the car.
Thanks for watching and Stay Tuned!