GSE25

What are the uses of having those three pieces of engine covers in the new IS's? What purpose do they serve? I took mine out and did not notice my engine any dirtier than with them on. What I did notice was that I could hear the engine more which is a good thing

On a side note.. how the heck do you put those clips back on? I placed them all in and they are still loose, ie. the middle stick is still sunk.

PhilipMSPT

iTrader: (5)

They're supposed to lessen wind drag, which in turn helps with acceleration, wind and engine noise, and gas mileage. But I think this is pretty minor. I think it has to do with aesthetics.

Personally, the quieter in the cabin, the better. I'm gonna keep them on.

tim817

There're 2 legs on the bottom of the clips. Spread them out and push it in...

Payam

LOL, that didn't sound right.....

PhilipMSPT

iTrader: (5)

Nice...

Don't forget to use force if necessary...

jlin101

the engine covers lessen wind drag? You must mean the tray beneath the engine compartment. The 3 plastic pieces (one in the front and 2 to the sides) on top of the engine compartment are cosmetic at best. There is no air movement between the hood and the top of the radiator.

BobsGX

The top 3 engine covers also help reduce engine noise from reaching the cabin.

Josh Combs

also I have heard that the engine covers are because lexus customers do not want to see a dirty engine so they just covered it all up.

jlin101

in theory, perhaps; I had them off over the weekend, and couldn't tell any difference. The firewall and the mat on the underside of the hood are the main sound absorbers.

tim817

hahahaha. I meant to say that..

shaolin

iTrader: (2)

hahhahaa