Bored, and thinking about making one over the winter/off-season.

I searched and searched, but wasn't able to find any threads on people making their own rear diffuser.

Anyone have any links to a how-to, or to a build thread with a rear diffuser build within it?

Thanks guys.

PS - this will be on USDM 8/9 bumper.

 

Here's the custom diffuser I bought for my car (diffuser pictured is mine, the car is not)

 

Where did you get those rear window slats? I'd love a set!

 

He probably got them from Rexpeed. I linked the black, but they also have carbon fiber for more $$$.

http://www.rexpeed.net/2012/en/produ...php?serial=228

 

Who makes that, and where did you get it?

Exactly the style I was looking for.

 

there is A LOT to take into account if your trying to build an actually effective/functional diffuser. the one posted above looks pretty decent. one issue is that with how low the pare tire tub sits its tough to get a good enough ramp angle.

 

any chance to can share some more details on ur diffuser? need to build one for my car and your's looks perfect for my needs

 

i had a another thought...in the latest pictures you posted i dont see the splitter on the car that used to be before you bought it. are you running it? if you're giving yourself a lot of understeer.

 

I did not run it at the autocross, but I will be on trackdays.

 

Made mine with alumalite. Took 4 sheets to do the entire bottom of the car, and a lot of thinking to make it all easy to take off and get on the trailer.






I didn't have a spare tire well but I did have the fuel cell in that position. It was at 10 deg which was exactly the slope of the rear bumper. I think it was 42" long for the strakes.

 

That's sweet, can you post some more pics of the car while its sitting on the ground please.

 

It was 2.5" of ground clearance from front to back.

 

Looks like my difflow elise diffuser

 

Damn, that's badass.

Where are you guys buying your alumalite? And how much is a sheet?

 

Kickass undertray and diffuser KevinD!