Quote:
Originally Posted by Lee Stewart
BTW . . . they are not Chrome Exhaust Tips. Inside the "tip" is a restrictor to reduce noise. This also reduced performance. |
Ha! I've got experience with this, too.
We released a stainless tip on the GMT800 Denali/Escalade program.
With the tip in place we were not able to pass our Noise Pass-by testing criteria. Without the tip we were able to pass.
Turns out the shape of the tip was making it act like a megaphone. Our solution was to leave the diameter of the pipe intact and run it out to the end of the styled tip, rendering the stainless part as cosmetic only.
K
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'63 LeMans Convertible
'63 Grand Prix
'65 GTO - original, unrestored, Dad was original owner, 5000 mile Royal Pontiac factory racer
'74 Chevelle - original owner, 9.85 @ 136 mph best
Last edited by Keith Seymore; 07-21-2021 at 06:44 PM.
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