Aero aesthetic mods - side effects?

[djryan2000]

Being that this is my first car to build I am feeling a little ricey. I’m thinking of adding the Vegaworks canards, a splitter (undecided, maybe Montune), wing risers, and some diffuser fins.
I know none of these will produce any noticeable performance gains, however I am concerned about worsening performance or severely hurting MPG. How will my mpg be affected by this? Will any of these mods hurt performance - particularly the wing risers? I’ve heard they may create lift as the back window stays clean, but I’m not sure if it’s like the benefits of canards - negligible.

 

[RubenZZZ]

Im running mudflaps and wing risers. Any difference they make at slower speeds is negligible, but im sure they affect MPGs once i start hitting 75+MPH.


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[D-resonant]

It's much too difficult to stay out of boost in this little car. So any MPG testing becomes difficult. Objective aero drag posts are also pretty rare. It has been a few years, but Siestarider had the fortitude to objectively test for drag in his air-dam-and-ride-height-coast-down-experiments.

I prefer to run my car low-drag slick, but I do like the look of the front-lip diffuser flap though.

 

[djryan2000]

It's much too difficult to stay out of boost in this little car. So any MPG testing becomes difficult. Objective aero drag posts are also pretty rare. It has been a few years, but Siestarider had the fortitude to objectively test for drag in his air-dam-and-ride-height-coast-down-experiments.

I prefer to run my car low-drag slick, but I do like the look of the front-lip diffuser flap though.

Very true, I’m always dipping into boost for the sweet intake sounds lol. I’m still managing to hit 30mpg though. I’m willing to sacrifice a little, I just wanted to make sure I wouldn’t install these parts, drill into my bumper making it basically irreversible, and then get 23 mpg.