Aero work, undertrays and misc looking for opinions
No, they are not $105 each to ship. That is shipping both pieces in one box by truck freight. The front tray can be rolled up and shipped UPS by itself cheaper, since both are being shipped it's cheaper to do them together via truck freight.
That makes sense, thanks dave.
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Joined: Dec 2007
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From: Houston
I think the largest gain is going to be from the two holes being plugged in the front end, they collect an enormous amount of air that gets trapped in the fascia and causes a huge drag. Imagine sticking a small garbage bag out the window of your car with an opening about the size of one and half hands, now multiply that times two openings. HUGE drag. The force if the air in those openings is so high it has pushed both inner fender wells back into the tires of my car. I figure now that they are blocked I won't have to replace them for the 3rd time.
Finally got around to installing the USDM EVO8 rear tray 2 weeks ago. Been sitting in the garage for 4 months.
I installed it after trimming slightly to clear the stock muffler. Unlike the pics of Daves car, I installed it inside the bumper cover which gives a cleaner look. I used self tapping sheet metal screws rather than rivets, but will be changing to blind nuts on the tray and ss hex key button bolts coming up thru the bumper cover. I did very minor trimming to get the panel to fit inside the bumper. I still have to install the small section on the passenger side.
I also installed my Beatrush front tray at the same time so both ends are looking better.
After the install, I tested the car at triple digit speeds to see if it felt better than the stock front tray and to see if I could tell if the rear was helping reduce lift. Subjectively the front felt more stable at 110-120. However the stock tray had been off for quite a while so my perception is skewed no doubt. The rear also seemed a little less twitchy. Id have to try it at upcoming HDPE events at Road Atlanta to see about the rear end stability in the corners.
David did a very nice job of fabbing it up and included a nice bracket for the small passenger side piece. I may end up modifying the rear tray by adding 3"-4" flanges extending up from the tray to better block air from getting into it.
For those people interested, I am drawing up plans for flat panels to be installed under the main body area. I hope to be able to bolt those on using existing holes and fabbed aluminum brackets. It will NOT cover the tunnel area to avoid heat issues on a street car. It may include small diverter spats like the Beatrush front panel uses , in front of the rear wheels , probably angled to the outside of the wheels.
I shall try to take pics of both ends this coming weekend
Milburn
I installed it after trimming slightly to clear the stock muffler. Unlike the pics of Daves car, I installed it inside the bumper cover which gives a cleaner look. I used self tapping sheet metal screws rather than rivets, but will be changing to blind nuts on the tray and ss hex key button bolts coming up thru the bumper cover. I did very minor trimming to get the panel to fit inside the bumper. I still have to install the small section on the passenger side.
I also installed my Beatrush front tray at the same time so both ends are looking better.
After the install, I tested the car at triple digit speeds to see if it felt better than the stock front tray and to see if I could tell if the rear was helping reduce lift. Subjectively the front felt more stable at 110-120. However the stock tray had been off for quite a while so my perception is skewed no doubt. The rear also seemed a little less twitchy. Id have to try it at upcoming HDPE events at Road Atlanta to see about the rear end stability in the corners.
David did a very nice job of fabbing it up and included a nice bracket for the small passenger side piece. I may end up modifying the rear tray by adding 3"-4" flanges extending up from the tray to better block air from getting into it.
For those people interested, I am drawing up plans for flat panels to be installed under the main body area. I hope to be able to bolt those on using existing holes and fabbed aluminum brackets. It will NOT cover the tunnel area to avoid heat issues on a street car. It may include small diverter spats like the Beatrush front panel uses , in front of the rear wheels , probably angled to the outside of the wheels.
I shall try to take pics of both ends this coming weekend
Milburn
Last edited by wrcwannabe; Feb 17, 2008 at 08:56 PM.
For those people interested, I am drawing up plans for flat panels to be installed under the main body area. I hope to be able to bolt those on using existing holes and fabbed aluminum brackets. It will NOT cover the tunnel area to avoid heat issues on a street car. It may include small diverter spats like the Beatrush front panel uses , in front of the rear wheels , probably angled to the outside of the wheels.
I shall try to take pics of both ends this coming weekend
Milburn
im interested whats the scoop?
