Does Your Car Know it's on a Dyno? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans Advertise
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-26-2019, 10:21 PM
Cars, Trucks, Boats
 
Join Date: Dec 2012
Location: Toledo, N.W.Ohio, USA
Age: 71
Posts: 6,338
Wiki Edits: 0

Thanks: 13
Thanked 772 Times in 726 Posts
Does Your Car Know it's on a Dyno?

Interesting consideration:
Is it pulling engine HP?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-27-2019, 04:12 AM
Registered User
 
Join Date: Feb 2014
Posts: 194
Wiki Edits: 0

Thanks: 22
Thanked 7 Times in 6 Posts
Interesting, I thought just Volkswagen TDiís and Ecodieselís changed their output when on a dyno
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-27-2019, 05:45 AM
55 Tony's Avatar
Registered User
 
Join Date: Nov 2018
Location: Cocke County, TN
Posts: 1,064
Wiki Edits: 0

Thanks: 134
Thanked 182 Times in 162 Posts
Quote:
Originally Posted by AutoMech View Post
Interesting, I thought just Volkswagen TDiís and Ecodieselís changed their output when on a dyno

My first thought also! Although it was illegal, that was one of the most creative tricks to fool the smog police.
__________________
Young enough to learn ... too old to remember.
Reply With Quote Quick reply to this message
 
  #4 (permalink)  
Old 03-27-2019, 06:09 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 52
Posts: 17,524
Wiki Edits: 0

Thanks: 268
Thanked 3,160 Times in 2,650 Posts
Quote:
Originally Posted by 55 Tony View Post
My first thought also! Although it was illegal, that was one of the most creative tricks to fool the smog police.
Pontiac tried to do something similar to Volkswagon way back in 1973, when they noticed EPA exhaust sample bags only held 40 or so seconds worth of exhaust, so they but a timed vacuum switch to shut off the EGR system after 55 seconds, and put a hotter cam in the Super Duty 455.

They got caught too.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-28-2019, 06:05 AM
55 Tony's Avatar
Registered User
 
Join Date: Nov 2018
Location: Cocke County, TN
Posts: 1,064
Wiki Edits: 0

Thanks: 134
Thanked 182 Times in 162 Posts
Quote:
Originally Posted by ericnova72 View Post
Pontiac tried to do something similar to Volkswagon way back in 1973, when they noticed EPA exhaust sample bags only held 40 or so seconds worth of exhaust, so they but a timed vacuum switch to shut off the EGR system after 55 seconds, and put a hotter cam in the Super Duty 455.

They got caught too.

Hmm, I guess for it's day it was creative. Maybe too easy to be able to look at it and ask "what does this thing do?". Not like code on a chip. Makes me wonder if anyone did anything else and did get away with it?
__________________
Young enough to learn ... too old to remember.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-28-2019, 07:51 AM
Registered User
 
Join Date: Apr 2007
Posts: 12,409
Wiki Edits: 0

Thanks: 182
Thanked 1,143 Times in 913 Posts
New ones don't go on a dyno, they report via data link at least here on the west coast. The state has closed or shrunk many test stations since 2015. My wife's modern Toyota has never been to a test station, it tattles on you, probably even to your insurance company.

Bogie
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 03-28-2019, 08:38 PM
Rip VW's Avatar
Registered User
 

Last journal entry: This thread is officially Kaput as of 11/07/2017
Join Date: Jan 2015
Location: Coastal ,Washington
Age: 65
Posts: 848
Wiki Edits: 0

Thanks: 3,145
Thanked 927 Times in 521 Posts
I just got my 2008 E150 tested a couple weeks ago. All they did was probe the exhaust and sampled it at idle and 2700 rpm. No Dyno no ECM connection.

The awesome thing about it was they handed me a notice that said "This is the last inspection my van will ever need. "Effective 2020 Worshington State is dropping the emissions testing program"! It goes on to state we been so good at cleaning up our air they decided to end the testing program!! Good news to us but I wonder how long it will stay ended...
Reply With Quote Quick reply to this message

Recent Hotrodding Basics posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
illegal mechanic activity, sleazy mechanics and who i can trust C84 Hotrodders' Lounge 10 03-12-2019 08:55 AM
MAJOR Problems with Body Shop RetroJoeG Body - Exterior 38 08-24-2013 03:01 PM
"Typical" Hours in a Rebuild? ant_8u Body - Exterior 69 07-14-2013 06:48 PM
Today for the first time I judged a car show. MARTINSR Hotrodders' Lounge 7 06-07-2008 05:45 AM


All times are GMT -6. The time now is 06:13 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.