Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 11-12-2019, 05:39 PM   #11 (permalink)
Master EcoModder
Ecky's Avatar
Join Date: Dec 2011
Location: Vermont
Posts: 3,593

Gaptooth (retired) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 54.26 mpg (US)

Such Fit - '07 Honda Fit Sport
90 day: 41.27 mpg (US)

Connect - '15 Ford Transit Connect XL
90 day: 24.41 mpg (US)

K-sight - '00 Honda K-sight
90 day: 39.47 mpg (US)
Thanks: 1,355
Thanked 1,490 Times in 944 Posts
Originally Posted by Fat Charlie View Post
OE cluster MPG displays are about as accurate as a presidential hurricane forecast.

Get a ScanGauge or UltraGauge, spend some time getting it calibrated, and then use the short trip measurement to ABA test your mods.
If OP is running anything but stoichiometric, a Scangauge or Ultraguage will be really inaccurate too, as they don't use air-fuel ratio in their calculation. The way to get accurate numbers in a lean burn vehicle is with an MPGuino.

  Reply With Quote
The Following 2 Users Say Thank You to Ecky For This Useful Post:
Fat Charlie (11-12-2019), mikeyjd (11-17-2019)
Alt Today
Popular topics

Other popular topics in this forum...

Old 11-12-2019, 10:38 PM   #12 (permalink)
Master EcoModder
slowmover's Avatar
Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,407

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
Thanks: 1,368
Thanked 705 Times in 533 Posts
The display number is relative. As a value. Mines off 11% at 60-mph. A glance tells me how I’m doing after correction. The main value is in checking against current road conditions. As a tank for me is in excess of 700-miles, the display rarely is left alone.

As to mpg:

A fuel stop 50-60 miles out from home. Warmup (including tires) is done. Fill to first auto shutoff. Then, a drive of 100 or more miles. Make the midway turnaround at a deserted crossover to avoid stopping.

Run about 62-64/mph. Keeps you under commercial traffic, but not so they jam up behind you. 100% cruise control use. No lane changes. Cancel cruise to get groups around you (drift down to 55; use terrain to re-engage cruise: let the computer handle the drivetrain). No accel or decel. Note exceptions.

Back to same pump and refill same way.

A baseline which anyone can copy. This is the most important consideration.

2004.0 DODGE Ram QC/LB 2500 2WD/NV-5600 305/555 ISB. 7,940-lb. Stock. 200,000 miles/5000-hrs @ 40-mph average.
1990 35' Silver Streak TT 7,900-lb.
11-cpm solo & 19-cpm towing; 21-mpg average past 54k-miles
Sold: 1983 Silver Streak 3411
  Reply With Quote
Old 11-17-2019, 12:48 PM   #13 (permalink)
Master EcoModder
mikeyjd's Avatar
Join Date: Mar 2013
Location: Grand Rapids, MI
Posts: 838

Matchbox - '93 Ford Festiva L
Team Ford
Last 3: 70.16 mpg (US)

Salamander - '99 Chrysler Concorde LXI
Team Dodge
90 day: 30.3 mpg (US)

Urquhart - '97 Toyota Tacoma 4x4 V6 3.4L DLX
90 day: 25.81 mpg (US)

Smudge - '98 Toyota Tacoma
90 day: 40.65 mpg (US)

Calebro - '15 Renault Trafic 1.25 dci
90 day: 39.39 mpg (US)
Thanks: 1,380
Thanked 209 Times in 155 Posts
Corvette For Prius Fuel Economy & Z06 Power With LEAN BURN MODE! Project 40 MPG EcoVette!

  Reply With Quote
Reply  Post New Thread

Thread Tools

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com