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Old 08-11-2022, 04:47 PM   #19 (permalink)
Caddylackn
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Join Date: Jun 2022
Location: Bremerton, WA
Posts: 104

Passat TDI Wagon - '97 VW Passat Wagon TDI
90 day: 55.81 mpg (US)

Blue - '21 Hyundai Sonata Blue
90 day: 53.79 mpg (US)
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Quote:
Originally Posted by Logic View Post
All this talk of ram air makes me wonder if the opposite isn't true at the other end..?

ie: Where's the lowest pressure area at the rear of a car? And why doesn't the exhaust exhaust there..??
I am trying this out, making my exhaust exit at a low pressure area. Air velocity should be high here and pressure low. I should get a bump up in engine efficiency.



Seems to work well. Someday I will put on a slip on tail pipe and extend it past the bumper and do a A B A comparison in gas mileage.
__________________
97 Passat TDI Wagon
Bosio 520 DLC nozzles, chip tune
Mufflerectomy
306k miles
Scan Gauge II
full belly pan
26 gallon tank
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Logic (08-15-2022)