10-21-2015, 06:28 AM
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#1
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Registered User
Join Date: Dec 2013
Location: Greenville, S.C.
Posts: 2,670
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Are clean cars faster?
Every time I wash the Boxster it feels so much quicker. A third gear pull from 3k is like lightning not to mention how much louder and throatier the intake sounds.
Do others have similar experiences?
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10-21-2015, 06:40 AM
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#2
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Registered User
Join Date: Nov 2013
Location: Emerald City
Posts: 885
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Butt dyno...
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10-21-2015, 06:42 AM
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#3
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Registered User
Join Date: Jul 2009
Location: Arlington Heights, IL
Posts: 1,561
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Have you ever washed the car, and did an oil change in the same day? Amazing!
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10-21-2015, 06:43 AM
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#4
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Registered User
Join Date: Nov 2013
Location: Emerald City
Posts: 885
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Quote:
Originally Posted by Flavor 987S
Have you ever washed the car, and did an oil change in the same day? Amazing!
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If you hit for the Porsche cycle and change the air filter and cabin filter you add 30 hp.
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10-21-2015, 06:56 AM
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#5
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I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,432
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I experienced the greatest performance boost when I installed the two tiny rubber tips / edges on the plastic trims in front of the rear wheels. I swear it runs quieter and stealthier. Hugs the ground more.
__________________
'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
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10-21-2015, 07:29 AM
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#6
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Registered User
Join Date: Oct 2013
Location: Atlanta, GA
Posts: 419
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This commercial that UPS ran back in the day claimed that they washed their planes because it reduced drag.
That should make their planes fly faster for the same throttle setting.
Seems like the same would hold true for washing our Boxsters.
"A clean Boxster is a faster Boxster."
Plus, it's more fuel efficient. 
https://www.youtube.com/watch?v=Mk8BhQEuzyI
__________________
2001 Boxster S - Speed Yellow, Black Leather, Tiptronic, Jake Raby rebuilt 3.2 with IMS Solution
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10-21-2015, 07:41 AM
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#7
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Registered User
Join Date: Sep 2013
Location: Chandler, AZ
Posts: 1,796
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I added a PCA 10 year member sticker to my windshield and it added 10 hp. 
__________________
03 Carrera
02 Boxster S Guards Red, black interior with matching hardtop
89 Carrera 4
89 944 S2
78 911SC
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10-21-2015, 07:45 AM
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#8
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Registered User
Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 741
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A good wax job will reduce aero drag even more.
The dirt track Sprint car guys spray their cars with stuff to keep the mud from sticking.
__________________
Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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10-21-2015, 08:44 AM
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#9
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Registered User
Join Date: Oct 2008
Location: sw ohio
Posts: 253
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Quicker? You damn betcha!
Last edited by jotoole; 10-21-2015 at 08:46 AM.
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10-21-2015, 08:48 AM
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#10
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Registered User
Join Date: Oct 2014
Location: Portland, OR
Posts: 53
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Quote:
Originally Posted by Flavor 987S
Have you ever washed the car, and did an oil change in the same day? Amazing!
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I've always felt like an oil change makes it feel faster and the engine sound just a little sweeter!
Sent from my iPhone using Tapatalk
__________________
2000 Boxster S 6 speed Guards Red
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10-21-2015, 09:22 AM
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#11
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Registered User
Join Date: Aug 2013
Location: Ottawa, ON
Posts: 452
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Quote:
Originally Posted by lkchris
A good wax job will reduce aero drag even more..
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Driving without a shirt on without the wax job totally slows the car down...dame body hair! lol
__________________
DrCactus
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10-21-2015, 11:42 AM
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#12
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Registered User
Join Date: Oct 2008
Location: Ohio
Posts: 868
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The Scientific Response
Everyone knows that the formula for the drag coefficient
CD = (2*FD)/(ρ*v2*A)
Where the coefficient of drag equals two times the f**king dirt, divided by the constant rho times twice the velocity of your Boxster times the speed of the Ahole in front of you holding you up.
You're welcome.
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10-21-2015, 02:51 PM
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#13
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Registered User
Join Date: Aug 2013
Location: Toronto, Canada
Posts: 202
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Quote:
Originally Posted by schnellman
Everyone knows that the formula for the drag coefficient
CD = (2*FD)/(ρ*v2*A)
Where the coefficient of drag equals two times the f**king dirt, divided by the constant rho times twice the velocity of your Boxster times the speed of the Ahole in front of you holding you up.
You're welcome.
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Now that's funny!!!
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10-21-2015, 03:46 PM
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#14
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On the slippery slope
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,797
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Quote:
Originally Posted by Flavor 987S
Have you ever washed the car, and did an oil change in the same day? Amazing!
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I bled the brakes, changed the oil, and washed the car all in the same day!
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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10-21-2015, 04:11 PM
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#15
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Registered User
Join Date: Dec 2014
Location: Pacific Grove, CA
Posts: 494
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When I fart while driving it adds 10 hp. I swear. No joke.:dance:
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10-21-2015, 08:02 PM
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#16
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Registered User
Join Date: Nov 2009
Location: Winnipeg MB
Posts: 2,485
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A clean car, fresh oil, and cool night air. Amazing!
__________________
'99 black 986
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10-22-2015, 07:29 AM
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#17
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There Is No Substitute.
Join Date: May 2007
Location: West Coast
Posts: 3,253
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Red Clip = +10HP! Honestly. 
__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com
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10-22-2015, 08:17 AM
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#18
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Registered User
Join Date: Jun 2014
Location: LB, Germany
Posts: 1,509
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Are clean cars faster?
Well, i'm not shure. Since i have my new spoiler package on my ricer it seems to be slower in rain. And rain means in general that the car is cleaner:
BTW: also improved my home office:
Regards
Markus
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10-22-2015, 08:56 AM
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#19
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Registered User
Join Date: Aug 2013
Location: Ottawa, ON
Posts: 452
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Hot blonde in the passenger seat always increases it +25HP. Mind you it always decreases my wallet size by 25% too.
__________________
DrCactus
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10-22-2015, 09:34 AM
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#20
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Registered User
Join Date: Jun 2014
Location: Oregon
Posts: 455
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I don't know about the clean part, but it is clearly faster with the top down.
__________________
'04 Midnight Blue Metallic 986
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Molly
Yellowbird
2004 Porsche Boxster S
2004 Porsche 996 Targa
Mena
Porscha
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