Need suggestions for aerodynamics
 

I find myself going between 70-90 mph on the country roads and about 120-140 on the Autobahn constantly. The car is really stable at those speeds, for which I'm greatful. However, at times, I sense the front of the car lifting slightly at about 125-130 mph.

So...

I'm looking for some good underchassis spoilers/air deflector, or if I have to, a simple body kit with intergrated air deflection system. Thanks, all!

The OEM diffuser should be enough. I dont ever feel that in my car. You need more downforce. Look into a front lip or a bumper with canards instead.

+1, even at 140+ the car shold not feel like it's lifting. I actually like the way the car drivers better at 120 then 80:unibrow:

I was thinking the same, however, I do not have the front chin spoiler nor rear diffusers the Track edition has. Also, OEM exhaust system was designed to act as an underchassis rear spoiler. Now that I've the Borla, I don't know the changes to the aerodynamics (probably not by much anyway). In any case, I may just go to Perf. Nissan and purchase the front chin spoiler and rear diffusers like I intended to before I left.

I honestly don't think that will solve your problem. Underbody diffusers and such reduce drag and not lift. Canards, spoilers, and lips produce downforce which reduces lift.

http://www.rsci.com/uploads/images/18/duct-tape.jpg
:048:

There you go Chris. That stuffs good to 200mph.:unibrow:

Lol! Yogi forgot the cardboard. I need that hundred miles per hour tape and cardboard.

http://img33.photobucket.com/albums/...Riceboy2-2.jpg

Yeah Mike, that black stuff was only rated a 2mph

LOL, not even. It fell of when it was parked, remember. :D

I think this will do all that, and more! Looks like an Orca...

http://gateway.selltec.com/elements/...c/747604.pjpeg

Hahahahaha...

And those scoops will do what now? :102:

It's a German company - you should hunt them down and destroy them.

http://www.elia-ag.de/

try this too, I am positive it gave this guy downforce. I raced him from 80 to 140, he had every NA mod available and I had an Injen CAI....I had him by 2 car lengths at 140:038:

he is one of my Utah buds....

http://i27.photobucket.com/albums/c1...e/S4300210.jpg

If your front end is getting light, this is most likely caused by air "packing up" under your hood, causing a high pressure area. The best way to fix this is with a vented hood, such as Seibon's CF VSII hood.

Good idea as well. Recently, I haven't experienced any lift while on the Autobahn. I guess it was just that particular day with strong crosswinds.