i like this one alot better than the holes in the bumper

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iveeno &raquo;</TD></TR><TR><TD CLASS="quote">Don't know if you can get a civic to go fast enough for it to make a difference. I voted stock. </TD></TR></TABLE>

haha

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM_SOHC &raquo;</TD></TR><TR><TD CLASS="quote">or some crazy custom ****...
</TD></TR></TABLE>

Rotas with writing......

 

i have diffusers, they do nothing... i like how they look though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by texasnick &raquo;</TD></TR><TR><TD CLASS="quote">

......maybe on a dedicated 1/4 car..........maybe</TD></TR></TABLE>

 

I had one and thought i was the biggest **** on the street. Finally came to my senses, and sold that ****...haha


keep it stock..

 

I'd go with no diffuser.

 

If anyone has a STR diffuser then let me know and Ill buy it from them.

 

Stock bumper all the way.

 

cutting holes in your bumper or getting those types of diffusers is good for 1/4 mile cars, but if you plan on lapping (circuit racing), something way more functional would be this:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .Sarge. &raquo;</TD></TR><TR><TD CLASS="quote">
You mean like this?

Way more expensive but lots more functional too.

</TD></TR></TABLE>

 

Stock bumper...

I hate seeing a nice clean car and then look at the rear of it and there is this dumbass diffuser on the rear bumper... BAM!!! Ruined!

 

stock

 

here is mine. i had it custom made by lighterfaster.com (crx12 on here). was not expensive at all. he has HT specials on them.

no pics of it on the hatch yet.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tracy McGrady &raquo;</TD></TR><TR><TD CLASS="quote">

Rotas with writing...... </TD></TR></TABLE>

not even built race car can escape teh E hate




Modified by dmpd_ef at 9:04 AM 2/11/2008

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiR18EG &raquo;</TD></TR><TR><TD CLASS="quote">My boy has his prelude bumper cut with holes..... Not kitchen knife style done by cockpit = cleaner than the GE. Anyway car is tracked on a weekly basis and he said he noticed more downforce in the rear end.</TD></TR></TABLE>

now this sounds about right...
if your putting holes in the rear bumper, you would actually be causing more drag. Reason being, that you have now increased the area over which the air can flow out the back. In the stock configuration a "pocket" of air will cause a turbulent vortex of the air, and the majority of the high velocity air will flow right over the turbulant vortex...
having the holes causes the vortex to not exist, and the air to rush through the holes...
the only thing i can compare it to really, is pickup trucks with the tailgate. there was a study in a wind tunnel and having the gate DOWN or off completly cause more drag than having it up. With the gate up there, again, is a pocket of air, and the high velocity air tends to flow right over it. check out http://www.gassavers.org for aerodynamics...
the under PANEL would be more effective if you want the air to more easily escape the rear of the car, and that can increase the velocity of the air under the car, causing more downforce...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by OVNI_CIVIC &raquo;</TD></TR><TR><TD CLASS="quote">

now this sounds about right...
if your putting holes in the rear bumper, you would actually be causing more drag. Reason being, that you have now increased the area over which the air can flow out the back. In the stock configuration a "pocket" of air will cause a turbulent vortex of the air, and the majority of the high velocity air will flow right over the turbulant vortex...
having the holes causes the vortex to not exist, and the air to rush through the holes...
the only thing i can compare it to really, is pickup trucks with the tailgate. there was a study in a wind tunnel and having the gate DOWN or off completly cause more drag than having it up. With the gate up there, again, is a pocket of air, and the high velocity air tends to flow right over it. check out http://www.gassavers.org for aerodynamics...
the under PANEL would be more effective if you want the air to more easily escape the rear of the car, and that can increase the velocity of the air under the car, causing more downforce... </TD></TR></TABLE>

I really doubt that it would cause more drag. Pretty much common sense and it has been proven on 1/4 mile times.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM_SOHC &raquo;</TD></TR><TR><TD CLASS="quote">what about a clean carbon fiber long one with the holes and a rear under diffuser carbon fiber..?? on a black whip that would probably look kinda sick...</TD></TR></TABLE>

Yeah and with a wing on the hood too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Alchemist &raquo;</TD></TR><TR><TD CLASS="quote">

I really doubt that it would cause more drag. Pretty much common sense and it has been proven on 1/4 mile times.</TD></TR></TABLE>

trap speeds dont lie

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Alchemist &raquo;</TD></TR><TR><TD CLASS="quote">

I really doubt that it would cause more drag. Pretty much common sense and it has been proven on 1/4 mile times.</TD></TR></TABLE>

Perhaps not, but I dont see it as common sense. Seems more like overfed false information. id like to see those proven times.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh2 &raquo;</TD></TR><TR><TD CLASS="quote">

trap speeds dont lie </TD></TR></TABLE>

trap speeds without and with please?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike93eh2 &raquo;</TD></TR><TR><TD CLASS="quote">here is mine. i had it custom made by lighterfaster.com (crx12 on here). was not expensive at all. he has HT specials on them.

no pics of it on the hatch yet.







</TD></TR></TABLE>

see, now that with a carbon fiber under diffuser as well I think may be a tight lil combo.. upposed to it not doing anything, i dont think the CF ones look that bad at all... for the pics an info incase anyone wants to purchase any..

 

mine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Regal &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah and with a wing on the hood too</TD></TR></TABLE>

 

Keep it stock, y0!

 

I think it looks nicer stock.. But you don't do that mod for looks.

 

bad pic, my STR diffuser with the STR in the middle cutted out



flame on haters