Quote:
Originally Posted by freebeard
but for my feeling the bumper with holes made some difference in higher rpm's in 4th and 5th gear.
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HWFET (highway) driving cycle: (2% of driving)
Is there no reinforcing inside that bumper? I'd expect a bar or honeycomb.
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Yep; Highway, but also the car is now slightly lighter.
Name the aero mods that
reduce weight...
Actually; it's a case of aero being more noticeable the faster you are going...
There is some talk of better quarter mile times too on forums discussing these.
And yes; I expect the bumper has some sort of steel 'real bumper' under the plastic.
One can only assume the air was flowing around it from a higher to lower pressure area behind the plastic.
As the U shape (say) of a steel bumper has its strength in the 2 vertical bits of the U, one might drill the steel too, for an even lighter aeromod!?