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  1. Engine noise,lifters
  2. Random cylinder 4 misfire
  3. Lifter issue
  4. installing after market turbo
  5. First performance mod?
  6. Cobalt intake
  7. Chevy HHR 2010 2.4 litre starts but dies immediately
  8. Possible to disable the speed limiter without an expensive tune?
  9. transmission swap
  10. missing thrush washer or shim
  11. Oil Catch Can
  12. Changing side curtain roof air bags
  13. Harmonic Balancer bad = New engine?
  14. Replacing Modules (no dealer)
  15. Intermittent no Start. Canbus/Serial data comm error and code b1325-03
  16. Oil change frequency
  17. PO107 & PO 108 codes keep showing senor replaced
  18. Cobalt 2.0 SC on 2.4
  19. LE9 Throttle body on LE5 Big Runner Intake
  20. LE5 replacement for LE9
  21. Timing guide Upper bolt replacement.
  22. No cooling fan when overheat/AC + electrical anomalies.
  23. Crankshaft phaser ring
  24. Timing Chain Replacement
  25. Performance high voltage ignition coils
  26. P0017 with new timing chain
  27. Electrically dead
  28. Camshaft alignment
  29. Sensor Identification - Oil Leak
  30. Idle issues
  31. Oil Consumption
  32. Unknown piece in glove compartment niche.
  33. 2008 2.2l swap to 2.4?
  34. Recomendation for wideband O2 sensor
  35. Cat delete and resonator delete done bad.
  36. 2.4 turbo - is it possible?
  37. BG 109: sucks or worthy?
  38. 2.2 head on a 2.4 block
  39. Performance increase mods
  40. VVT Codes P0016 & P0017 HELP!!!
  41. Tuning
  42. Oil light oddities!
  43. Random misfire/ Throttle going crazy!!
  44. 2.4L Timing and such
  45. Possible 2.4L Trifecta Tune Substitue ??
  46. the inside of the fuel pump
  47. K&N Will it pass emissions in RI?
  48. My Chevrolet Dearler Throttle Body Clean Service
  49. Innovative performance chip
  50. How to tell if tuned
  51. Trifecta 2.4 tune?
  52. 09 2.2L-2.4L Engine swap.
  53. Need help with a tune
  54. Trifecta Question...
  55. Sluggish at take off
  56. 2.4L Engine Swap
  57. Custom Side Exhaust Question.
  58. Rpms?
  59. Help! Where is the NEGATIVE post?
  60. Coolant issues
  61. Ok, muffler one more time!
  62. P0121 code
  63. Cha Cha Cha Changes
  64. Car is Sputtering
  65. Needing a tune?
  66. Engine problem
  67. Look what I found
  68. Where has the Trifecta tune gone?!?
  69. Engine rpm's (help concerned)
  70. Saab 9.3 2.0t Intake Manifold / Throttle Body for LE5 2.4L?
  71. 2.4l to 2.2l Swap
  72. Phaser help
  73. Phasers
  74. P0651
  75. 2006 2.4 Exhaust
  76. Timing chain issues
  77. ECM 3 ports or 2 ports?
  78. Gutting 2nd cat
  79. Exhaust mods?
  80. Help with engine please
  81. Sounds like a diesel after timing chain replacement
  82. Is this used Supercharger ok? What to look for?
  83. Dtc p1682
  84. Flowmaster 40
  85. Supercharger Kit Questions
  86. Engine ticking normal???
  87. Will a Cobalt T3 Turbocharger work on 2007 HHR?
  88. Borla exhaust system!
  89. Cold Air Intake
  90. Exhuast Cutouts
  91. what can i do
  92. Exhaust Upgrades
  93. trifecta
  94. Intake and mpg
  95. Reroute Air Intake
  96. Side Exhaust
  97. turbo install
  98. P0011, temperature, and shifting. PLAESE HELP!
  99. 2.4 build
  100. main computer
  101. Engine timing chain kit
  102. tune
  103. Denso Iridium TT spark plugs
  104. Overheating
  105. starter or alternator?? helllpppp
  106. Loosing Power 2.4 07 hhr 212K
  107. Best fuel map/ fuel grade to tune for
  108. engine and trans replaced
  109. Eng pwr reduced
  110. 2.4l mod question
  111. Alcohol Level
  112. MAF location??
  113. Traction control
  114. 2010 hhr lt
  115. trifecta tune
  116. custom intake with spectre maf adapter
  117. nitrous injected 2.4 hhr
  118. transmission / engine mount
  119. The truth about oil and spark plugs
  120. Engine struggling
  121. G Force Performance Chip
  122. Question about exhaust
  123. Muffler suggestions
  124. HHR 2.4L Turbo?
  125. Flex Pipe
  126. like a plate / sheet noise at 1500 - 2000 rpm
  127. Cobalt supercharger WORK??
  128. Problem flashing Trifecta tune
  129. How do you install/setup a Trifecta Tune?
  130. How much of the original air box is cut away?
  131. Coolant Hose Routing
  132. TTR solid engine mount install
  133. Anybody tried a throttle body spacer?
  134. engine mods
  135. Supercharger, turbo kit, or nitrous?
  136. supercharger install
  137. octane rating of fuel to use.
  138. Intercooler choices
  139. JET maf sensor
  140. What speed should 4th gear auto be at?
  141. Best BANG for the buck ???
  142. Timing Belt
  143. K&N Intake Modification
  144. a new unusual noise...???
  145. Best Intake out there?
  146. Turbo Kit
  147. Supercharger or Turbo Kit?
  148. 2.4 transmission
  149. Stopped SC build, going Turbo Kit Route. ???
  150. 5th gear not working right
  151. e3 Spark plugs
  152. Running '08 2.4 on 87 octane
  153. Looking to make some changes
  154. Tuning with multiple mods question
  155. 2008 2.4 vs. 2009 2.4
  156. Direct injection or port injection
  157. LE5 Performance Camshafts yea or nay?
  158. Need to find some wires for Wideband Gauge
  159. Mail order computer tune?
  160. Catless downpipe
  161. 200 hp 2.4?
  162. HP Upgrade options. A little, not a lot.
  163. 2.4 ecotec
  164. [19159206] GMPP Air Intake - Filter Question
  165. Thinking of buying G-Force $69 chip
  166. Trifecta Tune issue ...
  167. Anyone try the Hypertech tuner?
  168. cmp sensor
  169. Stage 1 kit
  170. Why I like Denso spark plugs
  171. K&N intake question ???
  172. K&N Intake Install - Easiest Place to Disconnect Ground
  173. Cone Filter in Stock Box?
  174. Easy Performance
  175. Bad Mab Headers fit our HHR's??
  176. GMPP exhaust on 2.4?
  177. Cold Air Intake
  178. Super tune
  179. Trifecta tune 2.4ltr
  180. 2.2 vers. 2.4
  181. Performance.
  182. Magnaflow catback sound clip
  183. Disappointed with K&N intake
  184. Liqui Moly Ceratec, someone has tried this?
  185. Installing my intake and catback tomorrow
  186. Buying a K&N kit and magnaflow catback
  187. Wheres the Zip? (was it ever there?)
  188. HHR Proformance Chip
  189. Thinking of going duals...
  190. Turbo Install?
  191. pickup 8 tenths of a second 0-60 with just a spark plug change?
  192. 2.4L Engine Build
  193. Engineperformancechip.com
  194. Finally Dynoed the HHR
  195. Are U using HPT?
  196. Thought my 2.4 was a toad...
  197. Singing the 2.4L praises
  198. Supercharger
  199. Cgs clean and oil instructions?
  200. Tuning w/Trifecta Tune
  201. How to reset ECM after a performance Mod.
  202. manual boost controller
  203. CGS Intake System
  204. Trimming stock air box
  205. Injection is Nice, But.....
  206. Supercharged HHR
  207. turbo for a 2006 2.4L
  208. Gmpp?
  209. GMPP CAI Installed
  210. My New Muffler
  211. LE5 and LAP
  212. Supercharged 2.4l Stage 2 Clutch
  213. Exhaust
  214. Trifecta Tune 2.4
  215. Backpressure
  216. SLR Motorsports "chip"
  217. ls4 swap???
  218. Tuned or not?
  219. wanna add wideband o2
  220. Thinking of getting tune but scared
  221. changing valve springs
  222. Blue chip performance chip
  223. Doubt about rear transmission mount.
  224. tuning ?
  225. found a supercharger kit for the 2.4
  226. G Force Performance Chip Kit ?? Anyone ??
  227. info/ turbo
  228. what cobalt ss parts fit
  229. pics of intake
  230. Exhaust and cold air
  231. N.o.s.
  232. full intake or just a filter?
  233. worth throwning money into mods?
  234. 2.4 vs SS
  235. Part # for 2.4?
  236. Ram Air?
  237. ss turboon 2.4?
  238. sent back my jet stage 2
  239. GMPP Exhaust
  240. installed jetpcm stage 2
  241. Knock sensor for 2,4L. distinction 2006 - 2009.
  242. Pacesetter Headers?
  243. belt or chain?
  244. Losing MPGs
  245. HPTuners Tune?
  246. Charcoal Canister
  247. RS4 performance chip
  248. Realistic Horsepower numbers
  249. OBX header and downpipe
  250. eng. light still coming on 2006 2.4