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View Full Version : Fuel Economy - Hypermiling


  1. Grille mods, self made - to cut drag, boost engine temps
  2. Do U use any type of fuel injector cleaners?
  3. 5-speed from Cobalt XFE in HHR?
  4. Sputtering flow of air from tailpipe w/ idel
  5. Help with lousy fuel economy.
  6. what grade of gas is everyone running?
  7. E85 for better performance with A/C running?
  8. Does synthetic oil improve fuel economy?
  9. Trans problem
  10. At what speed does the HHR start to get poor mileage?
  11. E85 performance
  12. Anyone running E85 ?
  13. Fuel pressure regulator replacement
  14. Seeking links/recommendations for max airflow
  15. Hot air intake?
  16. Try this Mileage test.
  17. More MPG info...
  18. Help with horrible mpg 15-16mpg only
  19. How much?
  20. O2 sensor extension
  21. Just filled up.... need someone to compare
  22. Better Air Intake Setup?
  23. 200 miles to a tank gas ???
  24. Graph of stock torque curve
  25. MAF Sensor
  26. Fuel and oil system to be maintained ?
  27. 18x8 wheel mpg performance
  28. Pulse and Glide, Switching to Neutral
  29. Octane Boosters or not?
  30. Whats your gas mileage on your HHR
  31. Best Mileage Oil?
  32. MPG Tune?
  33. Brand of fuel you use
  34. MPG improvement modifications 2009 HHR
  35. Fitch Fuel Catalyst?
  36. New owner, great mileage
  37. Fuel mileage test round 2
  38. 2008 2.4 lifetime mileage
  39. First mileage test
  40. Gas Mileage Test: Tire Weight
  41. air intake fan?
  42. DIC fuel mileage accuracy?
  43. Fuel Escort
  44. My first real mileage check...
  45. Madison WI to Reno Nv
  46. H2OIL Fuel economy
  47. How long since the last Premium fuel vs Regular fuel question?
  48. 2.2 vs 2.4..and other help
  49. CNG, Auto-Gaz Centrum, sequential (multi-port) injection system
  50. Possible mpg loss due to grille?
  51. CNG Compressed Natural Gas
  52. Poor economy
  53. ? about mileage
  54. DIC Gas Readout
  55. Look what I got / did!
  56. Laughing about the DIC (fuel range)
  57. FuelLog for Android
  58. Longer Trip (For me) - HHR SS
  59. Tune for better mpg?
  60. MPG in my New (to me) HHR
  61. How accurate is the MPG detector computer thing?
  62. GForces chips
  63. Long road trip and hoping to get 500 miles per tank
  64. INST gear vs. Cruise Control MPG efficiency
  65. End of ethanol subsidy
  66. Tried some hyper miling on the way to work today.
  67. low fuel on dic
  68. Doing ok in my HHR so far
  69. 626.4 miles on one tank!
  70. Ethanol - Will it go up?
  71. Anyone ran taller tires?
  72. MPG 2.4 vs 400hp Vette
  73. Convert FROM E85
  74. E15 gas, is it coming near you ?
  75. Best of 25+ mpg so far (2.2/auto). I want better!
  76. Gas Mileage changes 2006-11?
  77. Ethanol fuel
  78. Gas mileage
  79. interesting fact
  80. Hypermiling
  81. hhr fuel economy
  82. edcaravan | poor gas milage in the winter ?
  83. Topping Off
  84. locking gas cap for an 07 hhr
  85. why would my gas mileage drop
  86. K&N FIPK vs Stock Airbox Mileage
  87. Gas Mileage at 60 MPH?
  88. K&N Cold Air Intake
  89. Premium fuel v. Regular Unleaded
  90. 49 MPG with a 2010 HHR LT2?
  91. finally getting good mpg in the 2.2
  92. E85 Fuel Economy
  93. Got to love that HHR MPG
  94. 2007 Gas Mileage
  95. Fuel economy has diminished.
  96. MPG Trifecta Tune?
  97. Can I used E-87 Ethanol
  98. Is The Woolly Worm Needed?
  99. Ethanol Free Gas Stations List by State
  100. MPG on 2.0 Vs 2.4
  101. Instant MPG Questions
  102. Air Filter / MPG improvments ?
  103. GM was totally wrong on our economy
  104. MPG versus Final Drive Gear Ratio
  105. MPG in a 2.4
  106. My Gas Milage
  107. Does anybody else's mpg drop when it gets cold?
  108. E10 vs. E85
  109. Enjoying my gas mileage!
  110. Tornado vs k&n
  111. Fuel Injector Cleaning
  112. Adding 2-Stroke Oil to Gasonline?
  113. Tall tales and fish stories....
  114. HHR - An Aerodynamic Brick?
  115. High Fuel Range
  116. My take on getting better MPG
  117. 87 or 91 on a 2006 HRH LT
  118. These vehicles are able to top 40 mpg!!
  119. Gas milage accuracy?
  120. Share your MPG with other HHR owners
  121. coasting
  122. Milage
  123. GM Fuel System Cleaner
  124. So Maybe My MPG Isn't That Bad...
  125. Hhr xfe?
  126. 34.0 - 36.8 Avg Mileage
  127. my mpg has been going down alot
  128. Mixing 87 and 93 Octane?
  129. 31.69 mpg with 93 octane
  130. manual hhr?
  131. 85 octane gasoline in Colorado. Void warranty?
  132. Pure Gas, No Ethanol
  133. Instant MPG?
  134. Milage tidbits
  135. A Picture of My MPG
  136. BAD winter mileage
  137. RPMs and Auto Trans
  138. How many miles
  139. Winter wheel/tire combo mpg
  140. Mileage run
  141. 37 MPG @ 60 mph
  142. Bosh/STP AutoZone coupons, good 'til 1/15/09 (plugs/wires/air filter)
  143. Crappy gas mileage in town / Incredible Highway
  144. ultimate speed for efficiency?
  145. How does ethanol effect octane rating
  146. Aerodynamic
  147. acetone?
  148. Mileage mods and strange results
  149. MPG lower than others listed
  150. Interesting article in Dallas Morning News
  151. Scangaugeii Mount Location?
  152. Real World MPG improvements
  153. Project absurd mileage completed!
  154. MPG update -> After PCM tuning
  155. Not exactly "Hyper-milling"
  156. Gave it a try today!
  157. tires
  158. Absurd Mileage!
  159. What tire pressure are you running?
  160. Saving a bit of gas
  161. Commuting choices
  162. 08' Mpg Verification
  163. Hydrogen
  164. My "hypermiling" techniques
  165. New forum section - Fuel Economy - Hypermiling
  166. Mods to improve mpg?
  167. Gas Mileage & weather
  168. Gas Mileage
  169. Gas saving ideas from Edmonds!