Hi guys, im developing a new project is a DC4 chassis, ive seen a lot of cars with those holes, the question is.. my car actually does 102 MPH in 1/4 mile, how faster can it be with the "holes", have any of you test it?

Thanks

First Post.

 

dang 102 prolly needs it

 

https://honda-tech.com/forums/drag-racing-36/holes-cut-out-back-bumper-2491166/

 

I have a 2000 DC2 integra. I didnt do the hole thing, but i cut my rear bumper "jersey style" and picked up MPH..

 

I think before people are testing rear bumper flaps

I think you will see very very very minimal gain with that mph.

 

Im planning on trapping in the 120s....should i cut up some holes or flaps?

 

Hi guys, thanks for the answers...

im trying to gain some mph but it is my DD, is a GSR and it weight 2880 pounds me inside

So at the end i wont make the holes.

 

A turbo would help you with that

 

What's "jersey style"?

 

Jersey style is where you find a body with concrete shoes in the river, then duct tape it under your back bumper, right?

 

I put diffusers on my Integra...with the bumper beam removed you can see how much room there is for air to be trapped

 

well played

 

X2

I figured they just cut their bumper to look like pauly D's haircut