Aero work, undertrays and misc looking for opinions
Undertray Pictures~!
First picture. This is the rear tray as seen from the back of the car. You can see it is just flat and straight. Looks like a "line" in the picture. I put the tray under the cover so no air can get trapped in the bumper cover, if it makes it there.

2nd picture. This is to show the break I put in the tray in the upper area near the rear sway bar. I didn't know if it would work to divert the air back under the undertray or not. Let me tell you, IT FREAKING WORKS!!! I drove here in light rain today and that angle was nicely streaked with water when I got to the shop.

3rd picture. Side view of the completed/installed rear tray. I have mine put on around the edges with 3/16" diameter aluminum rivets. There is really no reason to take the rear tray on and off, so rivets worked perfectly. Probably will be what I ship the rear kits with. You will need to buy a rivet gun capable of installing a 3/16" rivet or you can use a screw or something but that will be up to you. You will also notice the DEI heat shielding that is stuck onto the undertray to keep the exhaust from burning it.

4th picture. This is just a shot of how the tray uses the rear two bolts to hold it up and secure and the cut out around the hanger.

5th picture. Here's the completed front tray. Everything can be seen in this single picture. The tray attaches on my car with Dzus's. I will not ship/sell the kits like this. Too much added expense and I am not sure how many guys can do the intall. I will ship the kits with SS screws. I am not going to pre-drill the front where it attaches to the lip. It will be too hard to line up. As you can see the tray fits on top of the lip so no air can get in. You will simply drill a small hole through the lip, into the tray and put a screw in it. In the rear of the tray you can see the heads of the two tie bar bolts that hold up the rear. This paricular tray has the wickers installed in front of the tires. I am still on the fence as to the results of the wickers, so I will not be doing this on the trays. When I find out whether what I am seeing is good or bad I can supply these later. They install with a 3/16" diameter aluminum rivet too. Something you don't see is the DEI heat shield that is stuck on the tray on the top side to protect it from the downpipe heat.

Side notes. IF you are NOT running the lip like I am on the front I am guessing that the front undertray is going to be pushed hard against most downpipes. I can't gaurantee that the DEI shield is going to protect the undertray if it is pushed hard against the downpipe. In my case I have quite a bit of room and it isn't an issue.
On the rear tray. IF you are running someone else's exhaust or any style other than what is pictured here then the tray will have to be cut to fit around the muffler. I am not sure how that is going to work out. I will attempt to get one on a different style car when I can.

2nd picture. This is to show the break I put in the tray in the upper area near the rear sway bar. I didn't know if it would work to divert the air back under the undertray or not. Let me tell you, IT FREAKING WORKS!!! I drove here in light rain today and that angle was nicely streaked with water when I got to the shop.

3rd picture. Side view of the completed/installed rear tray. I have mine put on around the edges with 3/16" diameter aluminum rivets. There is really no reason to take the rear tray on and off, so rivets worked perfectly. Probably will be what I ship the rear kits with. You will need to buy a rivet gun capable of installing a 3/16" rivet or you can use a screw or something but that will be up to you. You will also notice the DEI heat shielding that is stuck onto the undertray to keep the exhaust from burning it.

4th picture. This is just a shot of how the tray uses the rear two bolts to hold it up and secure and the cut out around the hanger.

5th picture. Here's the completed front tray. Everything can be seen in this single picture. The tray attaches on my car with Dzus's. I will not ship/sell the kits like this. Too much added expense and I am not sure how many guys can do the intall. I will ship the kits with SS screws. I am not going to pre-drill the front where it attaches to the lip. It will be too hard to line up. As you can see the tray fits on top of the lip so no air can get in. You will simply drill a small hole through the lip, into the tray and put a screw in it. In the rear of the tray you can see the heads of the two tie bar bolts that hold up the rear. This paricular tray has the wickers installed in front of the tires. I am still on the fence as to the results of the wickers, so I will not be doing this on the trays. When I find out whether what I am seeing is good or bad I can supply these later. They install with a 3/16" diameter aluminum rivet too. Something you don't see is the DEI heat shield that is stuck on the tray on the top side to protect it from the downpipe heat.

Side notes. IF you are NOT running the lip like I am on the front I am guessing that the front undertray is going to be pushed hard against most downpipes. I can't gaurantee that the DEI shield is going to protect the undertray if it is pushed hard against the downpipe. In my case I have quite a bit of room and it isn't an issue.
On the rear tray. IF you are running someone else's exhaust or any style other than what is pictured here then the tray will have to be cut to fit around the muffler. I am not sure how that is going to work out. I will attempt to get one on a different style car when I can.
Last but not least. What you see pictured we are ready to produce. I have not tested to see if the car is faster, haven't measured down force. All I have done is built the parts, looked at how oil/water streaks across them and feel that they are better than the big open areas we had before. More testing to come at the track and I have someone who is installing sensors on his car to test for actual suspension compression with these installed and not installed.
The parts are going to be the same price for each one. Not sure how shipping is going to work yet either. For now all we are producing are THESE TWO EXACT PIECES. So the front tray for the EVO8 front end with this style lip and the rear tray for the JDM EVO9 rear.
Price, $175 each.
The front and rear will come with the DEI heatshield not installed, so you can cut it and put it where you want. The rear will come with 3/16" aluminum pop rivets to install it. The front is going to come with #12 SS phillips head screws to install it.
Thank you for the interest. They will be up on the site soon.
The parts are going to be the same price for each one. Not sure how shipping is going to work yet either. For now all we are producing are THESE TWO EXACT PIECES. So the front tray for the EVO8 front end with this style lip and the rear tray for the JDM EVO9 rear.
Price, $175 each.
The front and rear will come with the DEI heatshield not installed, so you can cut it and put it where you want. The rear will come with 3/16" aluminum pop rivets to install it. The front is going to come with #12 SS phillips head screws to install it.
Thank you for the interest. They will be up on the site soon.
Yes, I am going to make a rear tray for the US EVO8-9 bumpers, eventually.
Good news for now is I just finished up the front undertray for the EVO8 with the stock lip on it. We pulled Trent's car in here and finished it. So, now I can supply the undertray for the EVO8 with the Do luck STYLE lip I have, stock EVO8 lip and the rear undertray for the JDM EVO9 bumper.
Here is a picture of the tray on Trent's car with the stock lip. For those of you that have had your stock undertray on and off you will notice that on the stock tray it fits UNDER the little tabs that are on the stock front lip. I took a pair of snips and cut off ALL of Trent's little tabs. Then I slid the undertray all the way into the stock lip. You can see in the picture we just used 5 #12 SS screws to secure it. To be honest, with the rigidity of this tray and the two rear tie bar bolts holding it I think you could slide it into the lip and not do anything. It's not worth the risk to find out I am wrong though. Trent's car does have our Race FMIC on it and header GT35R kit, you can see how well it all fits under the FMIC. The center has two zip ties going around the stock center member to hold it up. The ends are zip tied to the inner fender wells just like we did on the other two cars. Fitment is even better with the stock lip as it fits up to the inner fenderwell pieces better.

Here is what I am talking about for the screws we used to secure it in the front.

Let the ordering begin
Good news for now is I just finished up the front undertray for the EVO8 with the stock lip on it. We pulled Trent's car in here and finished it. So, now I can supply the undertray for the EVO8 with the Do luck STYLE lip I have, stock EVO8 lip and the rear undertray for the JDM EVO9 bumper.
Here is a picture of the tray on Trent's car with the stock lip. For those of you that have had your stock undertray on and off you will notice that on the stock tray it fits UNDER the little tabs that are on the stock front lip. I took a pair of snips and cut off ALL of Trent's little tabs. Then I slid the undertray all the way into the stock lip. You can see in the picture we just used 5 #12 SS screws to secure it. To be honest, with the rigidity of this tray and the two rear tie bar bolts holding it I think you could slide it into the lip and not do anything. It's not worth the risk to find out I am wrong though. Trent's car does have our Race FMIC on it and header GT35R kit, you can see how well it all fits under the FMIC. The center has two zip ties going around the stock center member to hold it up. The ends are zip tied to the inner fender wells just like we did on the other two cars. Fitment is even better with the stock lip as it fits up to the inner fenderwell pieces better.

Here is what I am talking about for the screws we used to secure it in the front.

Let the ordering begin
Looks awesome as far as protection and cleanliness! I didnt read the whole thread, but is there any issues/concerns about heat dissipation? Like for use on a road race car?
-Ryan
-Ryan
I have to try it on the EVO9 fascia, I haven't had an EVO9 here yet to try it.
I can't imagine there being any type of heating problems with road racing. Remember, the car comes with an undertray from the factory. Also keep in mind how many guys are using the APR undertray/splitter for road racing.
I can't imagine there being any type of heating problems with road racing. Remember, the car comes with an undertray from the factory. Also keep in mind how many guys are using the APR undertray/splitter for road racing.
I have to try it on the EVO9 fascia, I haven't had an EVO9 here yet to try it.
I can't imagine there being any type of heating problems with road racing. Remember, the car comes with an undertray from the factory. Also keep in mind how many guys are using the APR undertray/splitter for road racing.
I can't imagine there being any type of heating problems with road racing. Remember, the car comes with an undertray from the factory. Also keep in mind how many guys are using the APR undertray/splitter for road racing.
Last edited by BlackTrack; Sep 26, 2007 at 02:57 PM.
just a neon, the part you will need is the one pictured for the EVO9 rear bumper. I am not doing a special piece for the EVO9 rear and any other muffler/design in the rear other than what is on my car. The one pictured will work but you are going to have to cut it to make more room for the muffler.
Trevor,
No problem on the car for a full tray. It is all going to have to be done custom to do it because of the wide body.
Trevor,
No problem on the car for a full tray. It is all going to have to be done custom to do it because of the wide body.
just a neon, the part you will need is the one pictured for the EVO9 rear bumper. I am not doing a special piece for the EVO9 rear and any other muffler/design in the rear other than what is on my car. The one pictured will work but you are going to have to cut it to make more room for the muffler.
Trevor,
No problem on the car for a full tray. It is all going to have to be done custom to do it because of the wide body.
Trevor,
No problem on the car for a full tray. It is all going to have to be done custom to do it because of the wide body.


