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