Functional Aero Parts and their effects ?

[ddeflyer]

Originally Posted by Wonderbar

For us non track living "normies", any reduced drag like underbody panels can help with normal freeway stability and increased mpg at sustained cruising on highway trips. Of course there are too many variables to say 'how worth it' they are.

I didn't notice any substantial change in fuel economy when I added the underbody panels; certainly not enough to justify the $400 cost of the panels. As I said though, it did reduce road noise a very perceptible amount which for some might be justification enough (I don't regret it; I like peaceful freeway cruising).

[Boxer486]

I think there was a Toyota chart at one time that showed the Cd dropping from 0.29 to 0.28 with the panels and to 0.27 with the spoiler. Might have been from early specs about the various JDM models.

[solidONE]

Originally Posted by CSG Mike

If it drives like it's on rails...

Yes... Yes, I know I don't push hard enough.

[CSG Mike]

Originally Posted by ddeflyer

About the JDM underbody kit you asked about in the first thread: I have it on my car, got it before I ever took the car to the track so I can't talk about the affect on track performance but I can talk about road performance.

It makes the car quieter on the freeway. That is why I got it, and I suspect for all but the most decked out and finished track car, you would only get that underbody aero for the n in NVH. That said, if you are going for reduced noise you will get much much much more bang for your buck by sectioning a sheet of dynamat and throwing that around your car's interior (especially the rear wheel arches).

That's all it does, for all practical purposes.

[kavanagh]

I just want to cover the hole left by the muffler delete I'm about to do.

I like the look of the Borla since it seems to tuck under the car nicely, but has anyone made it work with anything other than the Borla catback? Specifically a Berk dual tip?

Did Berk ever come to market with a diffuser for their deletes? I can't find one on their site.

I like the idea of the type 2 Driveway Labs, but still want an even more stock appearance.

I'm not trying to create downforce as much as prevent even more lift after deleting the stock muffler.

[ddeflyer]

I was about to post some pictures of the underbody panels but instead just wrote a (very quick) review. If you care what the bottom of the car looks like I put a few pictures up in this thread: http://www.ft86club.com/forums/showthread.php?t=63385

[Silver Ignition]

I'm still wondering who at Toyota/Subaru said,
"No take off those really nice flat underbody panels before you send it to America and fit smaller half-assed ones on instead. Because fuck them that's why"

[Model Citizen]

we're just going to destroy nice underbody panels here

[solidONE]

Originally Posted by Model Citizen

we're just going to destroy nice underbody panels here

So we can destroy the finish on the floorpan?

[Boxer486]

Originally Posted by Silver Ignition

I'm still wondering who at Toyota/Subaru said,
"No take off those really nice flat underbody panels before you send it to America and fit smaller half-assed ones on instead. Because fuck them that's why"

Same person that said take the trunk and hood insulation off and replace the dual HVAC with a cheap ass ugly Scion unit.

All about the $$$.

[Silver Ignition]

Originally Posted by Boxer486

and replace the dual HVAC with a cheap ass ugly Scion unit.

Speak for yourself on that one

[Model Citizen]

Originally Posted by solidONE

So we can destroy the finish on the floorpan?

This is why murica doesn't get nice things.

[Boxer486]

Originally Posted by Silver Ignition

Speak for yourself on that one

Huh? You and I have the dual HVAC....

[glamcem]

Originally Posted by CSG David

Underbody will reduce drag slightly simply because the airflow is streamlined. Keep in mind, you will get less pockets of air being formed underneath the car which can cause additional noise while you're driving. This is a 25k-28k USD car so the characteristics you get are pretty astonishing for its price point. Also, the car is incredibly stable at speed or high speeds. Not sure where you're getting stability idea from.

How fast are we talking about?