Nissan Altima REAR wind diffuser/belly - Fuelly Forums

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Old 01-30-2006, 07:54 PM   #1
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Nissan Altima REAR wind diffuser/belly

BEFORE





AFTER














It's held by 4 nuts and where it touches the bumper by ducttape.
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Old 01-30-2006, 08:05 PM   #2
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Anything on the front?

Anything on the front?
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Old 01-30-2006, 08:16 PM   #3
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nope, I already have a

nope, I already have a diffuser on the front. It came with it stock.
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Old 01-30-2006, 08:26 PM   #4
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that's awesome. nice

that's awesome. nice work.

what's the material? aluminum?

cost?
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Old 01-30-2006, 08:37 PM   #5
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yes, aluminum. The cost for

yes, aluminum. The cost for parts for the rear was $15
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Old 01-30-2006, 08:47 PM   #6
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My car gets 32-33mpg on

My car gets 32-33mpg on short trips. I will say if it gives me more than 34mpg than it's a success. I have also pumped my tires to 3 more psi so I hope this combo gives me 35mpg at 65mph. I can get a lot more mpgs but I don't drive 55mph just to get more than 40mpg.
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Old 01-30-2006, 08:51 PM   #7
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just to be clear, what

just to be clear, what you're doing here is not really a diffuser. it's a belly pan.

diffusers have a carefully designed shape meant to accelerate air as it exits the rear of the vehicle to generate downforce (reduce lift). a diffuser may even increase drag (but its downforce benefits high speed handling).

diffusers explained

a belly pan is simply meant to reduce drag and make the car more slippery.
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Old 01-30-2006, 08:57 PM   #8
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What did you do by the

What did you do by the muffler? It looks real good.
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Old 01-30-2006, 09:01 PM   #9
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I didn't know what to put so

I didn't know what to put so I just put both. Hopefully it works as a belly and not a parachute. I also got to change my air filter and I'll do a road test this week.

I like your wheels skirts. I wish I had them, but they look like they don't belong on the car. I wish I had wheel skirts that were even my car color then it would look natural.
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Old 01-30-2006, 09:04 PM   #10
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Re: What did you do by the

Quote:
Originally Posted by kickflipjr
What did you do by the muffler? It looks real good.
I used duct tape and attached it to the muffler heatshield. If this belly give me good results I'll redo it, not make it look ghetto. So when somebody walks up to my car it will be completly hidden unless they look under the car.
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