dude that looks really nice when i get my exhuast i want to put it just like urs...

 

what kind of exhaust is that?

 

that car is very nice....i like the front lip and canards the best! very mean looking

 

should be a jic spartan ti

 

is it a varis diffuser i want one of those so bad only thing does it scrape at the back when you go down driveways and things? that's my main concern and can you tell me do you notice a lot of difference on the track?

 

the thing is... it's for the evo7 bumper which is much higher than the 8 bumper. if you look carefully at where the slats are in comparison to the exhaust, you'll see the clearance should be no problem. they do make a difference at highspeeds, mostly because bumpers make really good air pockets, the diffusers eliminate that effect and give you some extra air channeling which definitely helps.

 

sorry to sound like a dumbass but...what does the rear diffuser actually do?

 

7 bumper looks waayyy better than the 8 or 9 imo. Nice. They come prepainted I heard for like 500.00? Id rather get the 7 bumper than a 9 any day. Its the real deal non-facelifted 'true' EVO bumper on our cars & is the only one with the same lines as the rest of the car.

 

actually it's a perfectly legitmate question. the idea is that if you get clsoe enough to the ground... the slats will form individual tunnels. the tunnels are fed air from underneath the car (this is why the effects are more pronounced when you are closer to the ground, becuase then the tunnels will be more tunnel and less "guide")

so this air going towards the back of the car... will go from the state of being smashed between the car and the ground to being increasingly more and more unsmashed as it moves towards/through/past the slats (notice that the cross section of one of the slats is a long right triagle, so you can easily imagine that the air goes from the thin point of the triagle towards the "back, side" of the triagle and the volume of this "tunnel" is increasing)

this will effectively create a low pressure area at the rear of the car. because the high pressure air from under the car is being unpacked as it moves toward the rear and that causes a low pressure area. if this is done with real tunnels you can actually get the car to suck to the ground.

 

looks damn good.

 

Nice ride

 

cool explanation

with high pressure being pushed towards the back of the car, does that mean it actually pushes the car forward a bit?

 

thanks for the kind words guys

for the ppl who is concerned about the clearance of the rear diffuser
thats not a problem at all, the stuffs that are closer to the ground are the exhaust pipe and the front lip, or front aftermarket bumper.......so u should be worried about the exhaust more than the diffuser

as for the performance, what trinydex explained is what i heard at the track last month
those pro driver saw my car, they started to talk about aero stuff
it sure improves rear tires traction and braking stability at high speed
by how much, i really can't tell as so many things are happening on the track
i'm not proffesional enough........after all that, it looks cool

 

WHERE CAN I get a rear diffuser? a good one anyone know any good brands? or cheap ones

 

that's exactly what it means... but it's all minimizing loss and not maximizing gain if you know what i mean... if there was no air... you'd have max speed always.