Not much for function since they're way too thick but I guess for cosmetics not bad. I would try to make them have less of a flat/cornered look on the lower portion and the rear portion of it but not bad for something you made at home.

I definitely give you creativity points.

 

you know now that i think about it" home made diffuser" wasnt the best title for this.

 

Man I like it , looks near oem, keep it up.

 

That looks pretty good

 

Good point. A diffuser implies you covered a large portion of the underside for aerodynamic effect.

I think either "I gave my rear bumper a FauxHawk" or "Homemade upside-down Vortex Generator for the bottom of the rear bumper of my Lancer" would be better.

 

Yup. Also, a diffuser is pretty useless if you have really turbulent air going into it. So you might as well run an entire underbody on your car too.

 

Honestly, for a home made project, first attempt. Very good

Only thing I would say is if you have more cut outs, you could sand them down, give them smoother edging similar to a Vortex Genorator, would give it a nice finished look.

 

I honestly think it looked better white though.

 

how about now does it look alittle better now with them being 1/2 with a slight round over. and there spaced out pretty evenly the center is 11.5 then the other spaceis are 8.5


(new ones next to the old ones)

 

Not bad at all.

 

Its a unique and cheap mod even if its just for looks

 

the only things I could think of for improoving this would be to source black plastic so that if the base color was a better match (yes you would still paint over it, but still)

And also adding a small pin to the sides of the main bolt hole which would ensure that the plastic triangle stays in a verticle position. Wouldnt need to bolt to the bumper.

 

wow not bad