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Old 09-11-2010, 11:32 AM   #13 (permalink)
5speed5
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Join Date: Feb 2010
Location: Los Alamos, NM
Posts: 134

TBSS - '08 Chevrolet Trailblazer SS 2WD
90 day: 19.36 mpg (US)

Wife's car - '09 Chevrolet Impala SS
90 day: 22.96 mpg (US)

Big Blue Hippo - '06 Chevrolet HHR 2LT
90 day: 45.99 mpg (US)
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Quote:
Originally Posted by euromodder View Post
You mean the part that curves forward ?
That's meant to split the air.
Air above the splitter is made to go around sideways.
Air below it obviously goes underneath the car.
Without the splitter, more air hitting the bumper would go underneath the truck.

There's lots of stuff sticking out underneath your truck, I'd try lowering the air dam to the lowest level of the protuding parts, and lower in front of the wheels.
If you ever put on a belly pan (a lot more work) you can still raise or remove the air dam.
Thanks. I figured it was something like that. I'll just leave it on for now.

Quote:
Huge grille, try blocking it (at least partly).
That's in the works, right after the tonneau cover is completed. I'm planning
on blocking the entire section above the Chevy bowtie and the section under the bumper. I think there will still be plenty of cooling from the remaining open section.

Quote:
A flat flatbed cover will help, but an angled one will help more.
Yeah, I'm going to go with the flat one for now and possibly use that as
a base for some add-ons with angles. Part of the reason for needing the cover is not for aerodynamics but because my wife always needs to get loads of mulch, soil and such, so this serves to prevent it from blowing out as she's driving (now she uses an old sheet with bricks to weigh it down).
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