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  1. 2008 2.2l swap to 2.4?
  2. Recomendation for wideband O2 sensor
  3. Cat delete and resonator delete done bad.
  4. 2.4 turbo - is it possible?
  5. BG 109: sucks or worthy?
  6. 2.2 head on a 2.4 block
  7. Performance increase mods
  8. VVT Codes P0016 & P0017 HELP!!!
  9. Tuning
  10. Oil light oddities!
  11. Random misfire/ Throttle going crazy!!
  12. 2.4L Timing and such
  13. Possible 2.4L Trifecta Tune Substitue ??
  14. the inside of the fuel pump
  15. K&N Will it pass emissions in RI?
  16. My Chevrolet Dearler Throttle Body Clean Service
  17. Innovative performance chip
  18. How to tell if tuned
  19. Trifecta 2.4 tune?
  20. 09 2.2L-2.4L Engine swap.
  21. Need help with a tune
  22. Trifecta Question...
  23. Sluggish at take off
  24. 2.4L Engine Swap
  25. Custom Side Exhaust Question.
  26. Rpms?
  27. Help! Where is the NEGATIVE post?
  28. Coolant issues
  29. Ok, muffler one more time!
  30. P0121 code
  31. Cha Cha Cha Changes
  32. Car is Sputtering
  33. Needing a tune?
  34. Engine problem
  35. Look what I found
  36. Where has the Trifecta tune gone?!?
  37. Engine rpm's (help concerned)
  38. Saab 9.3 2.0t Intake Manifold / Throttle Body for LE5 2.4L?
  39. 2.4l to 2.2l Swap
  40. Phaser help
  41. Phasers
  42. P0651
  43. 2006 2.4 Exhaust
  44. Timing chain issues
  45. ECM 3 ports or 2 ports?
  46. Gutting 2nd cat
  47. Exhaust mods?
  48. Help with engine please
  49. Sounds like a diesel after timing chain replacement
  50. Is this used Supercharger ok? What to look for?
  51. Dtc p1682
  52. Flowmaster 40
  53. Supercharger Kit Questions
  54. Engine ticking normal???
  55. Will a Cobalt T3 Turbocharger work on 2007 HHR?
  56. Borla exhaust system!
  57. Cold Air Intake
  58. Exhuast Cutouts
  59. what can i do
  60. Exhaust Upgrades
  61. trifecta
  62. Intake and mpg
  63. Reroute Air Intake
  64. Side Exhaust
  65. turbo install
  66. P0011, temperature, and shifting. PLAESE HELP!
  67. 2.4 build
  68. main computer
  69. Engine timing chain kit
  70. tune
  71. Denso Iridium TT spark plugs
  72. Overheating
  73. starter or alternator?? helllpppp
  74. Loosing Power 2.4 07 hhr 212K
  75. Best fuel map/ fuel grade to tune for
  76. engine and trans replaced
  77. Eng pwr reduced
  78. 2.4l mod question
  79. Alcohol Level
  80. MAF location??
  81. Traction control
  82. 2010 hhr lt
  83. trifecta tune
  84. custom intake with spectre maf adapter
  85. nitrous injected 2.4 hhr
  86. transmission / engine mount
  87. The truth about oil and spark plugs
  88. Engine struggling
  89. G Force Performance Chip
  90. Question about exhaust
  91. Muffler suggestions
  92. HHR 2.4L Turbo?
  93. Flex Pipe
  94. like a plate / sheet noise at 1500 - 2000 rpm
  95. Cobalt supercharger WORK??
  96. Problem flashing Trifecta tune
  97. How do you install/setup a Trifecta Tune?
  98. How much of the original air box is cut away?
  99. Coolant Hose Routing
  100. TTR solid engine mount install
  101. Anybody tried a throttle body spacer?
  102. engine mods
  103. Supercharger, turbo kit, or nitrous?
  104. supercharger install
  105. octane rating of fuel to use.
  106. Intercooler choices
  107. JET maf sensor
  108. What speed should 4th gear auto be at?
  109. Best BANG for the buck ???
  110. Timing Belt
  111. K&N Intake Modification
  112. a new unusual noise...???
  113. Best Intake out there?
  114. Turbo Kit
  115. Supercharger or Turbo Kit?
  116. 2.4 transmission
  117. Stopped SC build, going Turbo Kit Route. ???
  118. 5th gear not working right
  119. e3 Spark plugs
  120. Running '08 2.4 on 87 octane
  121. Looking to make some changes
  122. Tuning with multiple mods question
  123. 2008 2.4 vs. 2009 2.4
  124. Direct injection or port injection
  125. LE5 Performance Camshafts yea or nay?
  126. Need to find some wires for Wideband Gauge
  127. Mail order computer tune?
  128. Catless downpipe
  129. 200 hp 2.4?
  130. HP Upgrade options. A little, not a lot.
  131. 2.4 ecotec
  132. [19159206] GMPP Air Intake - Filter Question
  133. Thinking of buying G-Force $69 chip
  134. Trifecta Tune issue ...
  135. Anyone try the Hypertech tuner?
  136. cmp sensor
  137. Stage 1 kit
  138. Why I like Denso spark plugs
  139. K&N intake question ???
  140. K&N Intake Install - Easiest Place to Disconnect Ground
  141. Cone Filter in Stock Box?
  142. Easy Performance
  143. Bad Mab Headers fit our HHR's??
  144. GMPP exhaust on 2.4?
  145. Cold Air Intake
  146. Super tune
  147. Trifecta tune 2.4ltr
  148. 2.2 vers. 2.4
  149. Performance.
  150. Magnaflow catback sound clip
  151. Disappointed with K&N intake
  152. Liqui Moly Ceratec, someone has tried this?
  153. Installing my intake and catback tomorrow
  154. Buying a K&N kit and magnaflow catback
  155. Wheres the Zip? (was it ever there?)
  156. HHR Proformance Chip
  157. Thinking of going duals...
  158. Turbo Install?
  159. pickup 8 tenths of a second 0-60 with just a spark plug change?
  160. 2.4L Engine Build
  161. Engineperformancechip.com
  162. Finally Dynoed the HHR
  163. Are U using HPT?
  164. Thought my 2.4 was a toad...
  165. Singing the 2.4L praises
  166. Supercharger
  167. Cgs clean and oil instructions?
  168. Tuning w/Trifecta Tune
  169. How to reset ECM after a performance Mod.
  170. manual boost controller
  171. CGS Intake System
  172. Trimming stock air box
  173. Injection is Nice, But.....
  174. Supercharged HHR
  175. turbo for a 2006 2.4L
  176. Gmpp?
  177. GMPP CAI Installed
  178. My New Muffler
  179. LE5 and LAP
  180. Supercharged 2.4l Stage 2 Clutch
  181. Exhaust
  182. Trifecta Tune 2.4
  183. Backpressure
  184. SLR Motorsports "chip"
  185. ls4 swap???
  186. Tuned or not?
  187. wanna add wideband o2
  188. Thinking of getting tune but scared
  189. changing valve springs
  190. Blue chip performance chip
  191. Doubt about rear transmission mount.
  192. tuning ?
  193. found a supercharger kit for the 2.4
  194. G Force Performance Chip Kit ?? Anyone ??
  195. info/ turbo
  196. what cobalt ss parts fit
  197. pics of intake
  198. Exhaust and cold air
  199. N.o.s.
  200. full intake or just a filter?
  201. worth throwning money into mods?
  202. 2.4 vs SS
  203. Part # for 2.4?
  204. Ram Air?
  205. ss turboon 2.4?
  206. sent back my jet stage 2
  207. GMPP Exhaust
  208. installed jetpcm stage 2
  209. Knock sensor for 2,4L. distinction 2006 - 2009.
  210. Pacesetter Headers?
  211. belt or chain?
  212. Losing MPGs
  213. HPTuners Tune?
  214. Charcoal Canister
  215. RS4 performance chip
  216. Realistic Horsepower numbers
  217. OBX header and downpipe
  218. eng. light still coming on 2006 2.4
  219. Airaid intake installed on 2.4l
  220. Cobalt downpipe compatible with HHR?
  221. Can we get a sticky?
  222. K&N air filter and synthetic oil question
  223. Muffler Ideas!!
  224. Not Sure 2.4 or SS
  225. Time for a new clutch
  226. EcoTec Tuning
  227. 2.4 25K maintenance
  228. Cold Air Intake System Weapon R Dragon
  229. Need new muffler
  230. Tire smoking little monster.....
  231. Manual Trans gear oil question
  232. So let's make a turbo thread that won't get locked.
  233. Oiled air filters
  234. Hahn RaceCraft 2.4 HHR Turbo Install - The Review
  235. Trifecta Performance Discussion
  236. Ecotec goes racing!
  237. Best Intake
  238. Oil change. Quaker State 10W-30 Multigrade, good option?
  239. Cobalt SS Supercharger on an HHR 2.4?
  240. rim question
  241. Product Review: Trifecta Tune
  242. Getting More Performance Out of My 2.4L!
  243. Oil Change???
  244. Your input please
  245. Weapon intake
  246. Power loss
  247. price of GMPP CAI
  248. another intake/exhaust question
  249. Header?
  250. My 2006 2.4 TURBO HHR!