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  1. Who will be the First to do a 2.4 Mod?
  2. 2.4L 1/4 times and 0-60
  3. mods
  4. Air Filter?
  5. HHR Performance Module +25HP Kit
  6. Exhausted HHR
  7. 2 charge or 2 purge that is the question
  8. anoter exhaust ?
  9. Manual or Auto-tragic??
  10. Spark Plugs
  11. exhaust
  12. who is looking for a intake for there HHR
  13. Engine cover
  14. 2.4L Exhaust Upgrade (sound clips)
  15. Performance Module - does it work???
  16. RSM Racing CAI & Supoercharger
  17. Does anyone know?
  18. What performance parts do you want?
  19. MAF Problems
  20. Installed My G-Tech...
  21. K&N Replacement or CAI
  22. Gibson Exhaust from socallhhr
  23. New CAI on my HHR - Question Though
  24. Group buy interest on exhaust?
  25. HHR With Dual Exhaust Spotted!
  26. New K&N Filter For HHR
  27. 2.4 ECM Flash Ready to go
  28. gold line
  29. Tach/Speedo jump???
  30. Driving In The Intermediate Gear...... "I" on shifter
  31. Since I've joined No one talked about this,, its time..
  32. Flowsound
  33. Will The 2.0 Blower Fit On A 2.4 Hhr?
  34. Ecm/tcm ?
  35. Another Option
  36. turbo on auto transmission
  37. Vortex Generator for Equinox/Express/HHR +HP&MPG
  38. AirAid air-intake
  39. CGS vs. Airaid Test: Part 1
  40. Reply From Superchips
  41. Airaid Intake Special
  42. Intake Comparison Results
  43. Retreiving lost torque
  44. Rev Limiter??
  45. all the recent talks fo CAI's made me want to make one
  46. CGS review
  47. Airaid Intake Wave file
  48. Gibson exhaust
  49. Lower Temp Thermostat
  50. got my cgs intake last nite
  51. not telling details
  52. Just got my 1LT on the Dyno this morning
  53. SoCalHHR imco exaust tip?
  54. 2.4 westers tune group buy
  55. Lighter flywheel
  56. Gibson Update???
  57. Rear mounted turbo?
  58. Gmpp exhaust
  59. Oh MY FREAKIN Goodness!!!!
  60. Question about ECU reflash.
  61. E-85 Mod???
  62. N2O on 2.4
  63. a different air filter/intake?
  64. Yes, yet another Air intake question...
  65. air intake temperature modules
  66. Rear Disc Brake Kit?
  67. got new ride
  68. Appearence or Performance? What would you do?
  69. stock weight on 2.4L 5spd Flywheel
  70. new cold air intake........ price tba
  71. Wife is unconvinced on CGS intake.
  72. CGS Exhaust
  73. Dual exhaust
  74. Trying to get my IMCO installed.
  75. aftermarket headers
  76. Synthetic Automatic Transmission Fluid - Anyone?
  77. New K&N Intake Available Now...
  78. Back to stock, off comes the Imco muffler...
  79. Need 2.4L HHR in VA Area...
  80. Real cold air
  81. CGS Intake Question
  82. Powertrain Options...
  83. Oil change & Oil cap
  84. Edge
  85. Stock Air box
  86. Has anyone installed a Nitrous System on there HHR yet?
  87. GMPP manifold ?
  88. What are these tabs?
  89. Turbo Kits for the 2.4?
  90. K&N's new intake system, installed.
  91. Mass Air Flow Sensor
  92. Update: Pics of K&N installed and GMPP Exhaust
  93. think we could use this intake?
  94. no plug wires/ alt pulley?
  95. CGS intake bolt size?
  96. replacement filter for CGS intake????
  97. Bored out TB for 2.2L probably work on ours
  98. Website To Get Hhr Stuff From
  99. do our cars have a manual or automatic transaxel?
  100. a new mod front and rear sway bar
  101. IMCO install pics?
  102. do we have LSD
  103. how did GM get more hp this year?
  104. NEW MOD and a great price check it out
  105. sneek peek
  106. Oil / fuel Additives
  107. HHR Breathes now
  108. our dreams might be answered
  109. 2.4L Turbo Video
  110. Headers & ECM programming
  111. about how long to install a crank pulley
  112. 2.4 stage2 triflow cams
  113. Supercharger
  114. Cold Air Intake
  115. Quarter Mile Time
  116. does anyone have a turbo
  117. Care and Feeding of CGS Intake
  118. "Change oil soon" after CGS install
  119. Cat-backs for the 2.4
  120. AEM intake link 188.00
  121. They are finally on!
  122. ?Group Buy on Tune Tyme?
  123. Spark Plug Swap
  124. A/F Mixture on 2.4
  125. IMCO noise level and other mods
  126. Underdrive Pulley Kit
  127. Noisy CGS
  128. Turbo on 2.4
  129. cgs ehaust
  130. Lighter pullies installed -md- HHR this is for you
  131. Mileage Test
  132. K&N Air Charger?
  133. Stock Air Filter
  134. AEM short ram intake
  135. vector motorsports dyno tune
  136. 1st Post, Raised HHR
  137. Diablo Sport tuning
  138. For those who put on a header/manifold...
  139. CGS noise level
  140. HPTuned 2.4
  141. Is the IMCO really the best??
  142. What type muffler should I use..
  143. SoCal's "Outlaw" Air Filter...
  144. Ok, we need some sound clips.
  145. CGS Noise Level
  146. Denso spark plug gap for HHR 2.4
  147. 2.4 L Ecu-pcm
  148. Dyno's ~ good/bad ~ what to look for/ask?
  149. outlaw air filter
  150. tight fit
  151. Power upgrades for the HHR
  152. chip sets/performance/fuel saving
  153. Diablo Sport tuning is offical!!
  154. GMPP Turbo Kit for 2.4L ?
  155. My latest performance modification
  156. New Intake
  157. Fitch Fuel Catalyst
  158. What upgrades would you recomend?
  159. IMCO T924 recomendation
  160. GM Performance Parts Exhaust
  161. Can't go wrong with the truckshop.com!
  162. what kind of oil should i use?
  163. Engine Air Filtration System
  164. New to the forum and i got questions
  165. I got my CGS intake today!
  166. HHR Exhaust
  167. Has anyone installed Headers on a HHR
  168. 2.4 valve cover and CGS powdercoated chrome
  169. car would not start
  170. Mobil 1 Oil Cap
  171. New Dyno #'s 2.4 LE5
  172. CGS/Outlaw Filter - rattling noise
  173. Hahn Racecraft Turbo Kit
  174. Brake Change
  175. Where to get replacement CGS or Outlaw filter?
  176. Need mechanics' opinions
  177. FlowMaster
  178. 2.4L G5 Gt supercharged video
  179. K&N Cold air intake
  180. TOMMOTORSPORT Springs
  181. Power increase
  182. Back to stock intake. Bye bye CGs.......
  183. What will they think of next...
  184. Total electical failure
  185. Manual Trans
  186. K&N Cold air intake installed ????
  187. What octane to use on the HHR
  188. Quick Oil Change Valve
  189. Jet Performance Chip PCM
  190. Any one got a Magnaflow sound clip ?
  191. Flowmaster catback coming?
  192. CGS intake install question
  193. Mitz-Lioness!
  194. Hid Conversion
  195. radio
  196. headlight and taillight blackouts>??
  197. Anyone used a Tornado????
  198. How Loud Is The CGS Intake?
  199. pulstar plugs
  200. Cheap Power?
  201. Wats she worth.
  202. Turbo Tech Racing Solid Upper Engine Mount Coming Soon!
  203. Ok I'm at it again....
  204. Cgs intake or K & N intake
  205. 2007 Hhr Lt2 Clicks At Start-up. Oil Level Fine
  206. Intake + exhaust ordered
  207. Tuner options... ?
  208. K+N installed and Magnaflow cat back
  209. Jet Performance Module.
  210. fuel mileage module? worth a crap?
  211. Service Interval
  212. Why did GM lower the horsepower ratings?
  213. New 2.4 dyno numbers
  214. MagnaFlow Cat Back
  215. K&N Cold Air Intake & Traction Control Light
  216. old school vw sound
  217. Mileage basline/performance
  218. Octane rating issues
  219. Nitro Box
  220. new hhr help?
  221. K&N in stock turtle shell
  222. A question about LSD
  223. Headers
  224. Is there much difference between the 2.2 & 2.4
  225. Cruise Control RPM
  226. Worlds first mid engine HHR
  227. MPG Loss!! LOL!!
  228. How do i Add 30 HP
  229. K&n??
  230. Replace Turtle Muffler with straight pipe?
  231. Jet performance
  232. NEMO has been in the shop today!
  233. Man, this mileage sux...
  234. Flat spot at around 4000 rpm
  235. Ticking & Clicking Making Me Crazy!
  236. Towing with Manual Transmission 2LT
  237. reporting in
  238. Best price on Magnaflow exhaust?
  239. 2.4 2008 Tune
  240. Acetone mileage improver?
  241. HP and Torque chart
  242. intake question
  243. For those that have " praise the lowered"
  244. Goldline rear levelers arrived today
  245. Calling all 2.4 owners that have reflashed
  246. octane
  247. Ok, Its me again with another quasi-poll
  248. REALLY stupid question
  249. How do i clean my cgs filter?
  250. K&N Air Filter