Rear bumper diffusers

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09-19-2013
PetefromtheStreets

Rear bumper diffusers

So here I am to discuss and go over some diffusers and their purpose and how they can help you get some quicker ET's.

These are the kind I'll be briefly discussing....
http://img.tapatalk.com/d/13/09/19/y6eryseb.jpg

They are from www.Lighterfaster.com and I picked them up for $135 shipped not bad for carbon fiber if you ask me.

The advantages of having these on your race/street car are:

1) Quicker ET's due to less drag (wether it be in drag racing, auto X or road racing)

2) Helps open your parachute wgen deployed. (All that air that's escaping through your bumper is now being caught by your chute)

3) Adds a racecar inspired look

4) Better gas mileage (however slight, its still better.

5) Being these are carbon fiber/kevlar they are the lightest on the market.

Basically as your traveling down the track or Highway your passing through air, And the air is traveling up into your rear bumper and acts as a parachute/brake. So you can either build sheet metal plates that cover the underside of the car and keep air from going into that area or install these diffusers.

Here they are all done. I have the 2 piece kit because of how my bumper is laid out.
http://img.tapatalk.com/d/13/09/19/e9ubazy7.jpg

They offer the full length 1 piece in carbon fiber
http://img.tapatalk.com/d/13/09/19/nymu7ehe.jpg

And they offer the 2 piece in carbon fiber and carbon kevlar.

http://img.tapatalk.com/d/13/09/19/na5y8yre.jpg
http://img.tapatalk.com/d/13/09/19/8azatuse.jpg

I hope you enjoy.

s4 IG-PETEFROMTHESTREETS
09-19-2013
Frostydc5

great write up! one thing i have always wondered for the cheap people like me, could you theoretically just cut the bumper with an outline without purchasing these? not saying im going to do it im just wondering....

looks great tho
09-19-2013
PetefromtheStreets

Re: Rear bumper diffusers

Quote:

Originally Posted by Frostydc5

great write up! one thing i have always wondered for the cheap people like me, could you theoretically just cut the bumper with an outline without purchasing these? not saying im going to do it im just wondering....

looks great tho

Thanks and yes you could but you'd have to make your cuts as symmetrical as ever. These at least cover up a slip or mistake. No such thing without unless you use a hole saw to be honest.

s4 IG-petefromthestreets
09-19-2013
Frostydc5

yeah makes sense and using a hole saw would be the best bet if you want to be cheap but would probably look like shit compared to this lol. i plan on just cutting the lower half of a second bumper off for track purposes lol
09-19-2013
PetefromtheStreets

Re: Rear bumper diffusers

Quote:

Originally Posted by Frostydc5

yeah makes sense and using a hole saw would be the best bet if you want to be cheap but would probably look like shit compared to this lol. i plan on just cutting the lower half of a second bumper off for track purposes lol

Now if you were truly cheap you'd stock with 1 bumper. You sir are a baller. I got cf ones because they look #sickasfuck!! And its decent fire a show car too ;)

s4 IG-petefromthestreets
09-19-2013
Frostydc5

Quote:

Originally Posted by Adm_rsx

Now if you were truly cheap you'd stock with 1 bumper. You sir are a baller. I got cf ones because they look #sickasfuck!! And its decent fire a show car too ;)

s4 IG-petefromthestreets

not at all lol. i need to find a cheap bumper and im going to cut it to where the bottom of the license plates sit, maybe a little higher and be done lol. by cheap i mean like junk yard cheap lol
09-19-2013
PetefromtheStreets

Re: Rear bumper diffusers

Quote:

Originally Posted by Frostydc5

not at all lol. i need to find a cheap bumper and im going to cut it to where the bottom of the license plates sit, maybe a little higher and be done lol. by cheap i mean like junk yard cheap lol

Spend the 135 on carbon fiber or 150 on the carbon kevlar and be functional and look good boom best of both worlds and no haggle of a bumper change at the track. Your already planning on doing that for the front Lol

s4 IG-petefromthestreets
09-19-2013
monjarassi

Great stuff
09-20-2013
Spaz

Always wanted to do these myself. Very nice
09-20-2013
PetefromtheStreets

Re: Rear bumper diffusers

Quote:

Originally Posted by monjarassi

Great stuff

Quote:

Originally Posted by Spaz

Always wanted to do these myself. Very nice

Thanks guys. You should [MENTION=28]Spaz[/MENTION] your car looks great as is but c.f. Never hurts Lol

s4 IG-petefromthestreets
09-20-2013
Frostydc5

Quote:

Originally Posted by Adm_rsx

Spend the 135 on carbon fiber or 150 on the carbon kevlar and be functional and look good boom best of both worlds and no haggle of a bumper change at the track. Your already planning on doing that for the front Lol

s4 IG-petefromthestreets

thats a good point lol