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Engine Tunes/Mods [Archive] - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum
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  1. Upgrades for Vortec 4200?
  2. Fan elimination kit?
  3. Good news about custom computer tuning
  4. Performace Chips?
  5. cooler thermostat?
  6. Westers Performance Tune nearly available.
  7. Did my Engine Swap Today!
  8. I-6 engine modifications (suggestions)
  9. computer chip
  10. there might be some help with V8 swap
  11. fuel filter location
  12. Best Choices For Performance and Mileage
  13. Engine upgrades question
  14. OIL FILTER
  15. CUSTOM COMPUTER TUNING.
  16. where is the fuel line located??
  17. oil filter
  18. Best Sparkplugs for 4.2L
  19. first oil change
  20. when to change spark plugs?
  21. dip stick question
  22. Electric Fans
  23. Changing motors
  24. Cams, Pistons, Crank???
  25. Westers Tune
  26. oil change help asap
  27. Installing the Westers Tune
  28. Best Gas for own engines
  29. Computer Chips
  30. THE TUNE IS HERE! THE TUNE IS HERE!
  31. Westers Tuning Info for Trailvoys
  32. Just added a jet module
  33. Difference in 05' & 06' engines ? 275hp vs. 291hp.
  34. Stock 4.2L I-6 chassis dyno power numbers?
  35. Engine Block Heater!!
  36. Piston slap?!
  37. Those with Borla and Wester's Tune.....
  38. Improving Gas Mileage and Power - Leased Vehicle
  39. jet performance? what do we have?
  40. nitrous on a 4.2
  41. 4.2L Port & Polished Head
  42. Bolt on performence mods...
  43. Westers Tune or Custom Headers??
  44. PCM upgrade
  45. JET SCU 2000 Intall Help
  46. 4.2 Wait4Me Tune
  47. stage 1 or 2 jet chip
  48. performance modules
  49. Another Wester's question
  50. How to get rid of revlimiter?
  51. Hedman header for the 4.2
  52. Remove alternator to change Thermostat?
  53. MOTOR SWAP
  54. Westers Custom Tune Trailblazer inline 6 (LL8)
  55. Turbocharged 4.2 Project almost completed!
  56. PCM Part Number
  57. engine oil
  58. Performance Module
  59. When should I install westers tune
  60. HP Tunners is getting closer to being ready for I6
  61. 4.2l variable timing?
  62. bottle to my envoy
  63. Tuners ??? Programmers?? help
  64. Who owns a 93 HOT tune??
  65. Fuel injection flush service- Yes!!
  66. Change I6 to a 5.3 V8
  67. Need help installing Westers!
  68. Help with new engine
  69. Performance Chip
  70. Performance Parts for GMC Envoy?
  71. Cracked coolant tank
  72. Have some performance questions
  73. 02 Voy.. Hesitation upon takeoff
  74. PCM
  75. I6 PCM opinions
  76. v8 swap
  77. Westers Question
  78. performance chip
  79. Intake/Exhaust Port Matching...
  80. 4.2L cylinder head pic..
  81. Westers Tune MPG
  82. Started 'tuning' my 4.2L I6 today...
  83. Towing Experience with Chip
  84. question.. i6 vs v6
  85. HPTuner files
  86. Engine Idle drops or surges
  87. Just installed my Westers PCM
  88. 350ci engine swap??
  89. JET Stage 1 chip, Better Gas Mileage?
  90. Replacement Fan Clutch - 15293047 ??
  91. Tuning
  92. Fan Engage/Disengage issues?
  93. found chips cheap sounds good right?
  94. horsepower
  95. Wait4me Tune Info.
  96. HP Tuned!
  97. more power
  98. looking for jetchip stage 2
  99. Which Tuner Program?
  100. So does anyone HAVE a wait4me tune?
  101. difference between tunes
  102. The Wester's Deal
  103. westers upgrade with redone valve body
  104. Order form for Wester's????
  105. Cooler T-stat for V8??
  106. MSD Ignition & Coils
  107. Need Part # for PCM
  108. Anyone have a pic of the 4.2 PCM
  109. Wait4Me = Real Deal
  110. Low-cost tuner for ECM?
  111. I installed an electric fan
  112. Best Performance Upgrade
  113. latest mods: westers, air bags
  114. Wester's Tuning
  115. What is the Westers tuning all about
  116. elec fan?
  117. Pcm ?
  118. Anyone Tried this Ebay Item?
  119. Wester's Tune + Jet Performance Chip
  120. additional efan?
  121. Can anyone point me in the direction of custom camshaft makers in the states?
  122. Westers Transit Time
  123. Wait4ME
  124. Installed Westers tune NEED HELP ASAP!
  125. What tune?
  126. Anyone With A Westers Tune
  127. Has anyone dyno'd the Wait4Me Tune yet?
  128. That's it, I NEED a tune! Help me decide which one for a V8
  129. Westers 91/93 tune observations
  130. Anyone sell pistons/performance parts for the 4.2?
  131. Where to buy ECM's
  132. Tunes for Euro specs?
  133. Westers Tune Questions
  134. Easy Performance upgrade?
  135. Questions about getting a tune...
  136. Help Me With My Tune Install!!!
  137. EFILive Software Commercial version sale. $549!!
  138. PCM Tune
  139. tuning?
  140. Installed engine block heater... not bad
  141. 4.2l I-6 Mods
  142. Tuning Advice
  143. feeling the westers tune?
  144. Wait4me Performance tune!?!? Your input needed!
  145. wait4me off to a good start!
  146. Is the Westers tune worth the $595?
  147. Tune Question
  148. Tune Question
  149. tunes
  150. Bad vibes after tune
  151. Another temp. tune thread.
  152. Rainier V-8 tune
  153. Performance Chip????
  154. Jet Chip
  155. Tuners
  156. ordered my tune finally!
  157. Soo.. Jet Chips Eh????
  158. Spark Plugs and Tune?
  159. You have a TUNE ?? HELP plz
  160. Wait4Me tuning and gas milage :(
  161. Any other Performance mods out there?
  162. NOS???
  163. info on tune
  164. I6 Electric Fan??
  165. Can I Get 300 Hp From My 4.2 W/ Only Bolt Ons And A Tune?
  166. performance chips
  167. Want To Get A Tune, Need Help!!!
  168. Want 2 tunes
  169. whats the best tune
  170. Fuel for tune
  171. Trans settings with HP tuners
  172. Wester's Tune - Check Engine light flashes
  173. PCM Reflashing/Reprogramming
  174. Tune Question!!
  175. The 6th tune is a charm!!
  176. noob to the TB wanting to know about PCM
  177. Question on Vector/Jet
  178. Ordered my PCMforless tune today
  179. edge tuning
  180. Want to buy a PCM for less but confused
  181. PCM - Where is it?
  182. Just got my PCM4LESS
  183. PCMTune installed .. could it cause this?
  184. I6 modification and performance.
  185. Tri-Phase Performance Module/PCMFORLESS
  186. Nitrous Powered TB Project
  187. First tank with a tune= 13mpg
  188. Tune/Fan Clutch
  189. jet chips
  190. CASE relearn for PCMforless
  191. New PCM installed
  192. More info on EFILive
  193. tune
  194. Mods that won't affect Warranty
  195. What brand chip do you have in your engine?
  196. Tune Results
  197. Options for a PCMforless tune ....
  198. Who's got the best module or tuning?
  199. PCM tune that I received
  200. Tune then bolt-on, bolt-on then tune?
  201. The actual CASE relearn procedure
  202. PCM programmers? please help
  203. engine internal mod question
  204. Tune?
  205. So now that its tuned ....
  206. PCM Tune with ABS limiter ....2005 TB
  207. Best Tune?
  208. Nitrous
  209. HP Tuner Program
  210. can somebody please explain pcmforless?
  211. Has anyone got a gas upgrade with their tune?
  212. VVT Tuning
  213. I ordered my PCMFORLESS!
  214. PCMforless
  215. Ordered my PCMforless
  216. Question: Performance Chips
  217. Anyone has this ? I want one !
  218. PCMforless & the JET Chip... work together??
  219. tuned
  220. torque management
  221. water-methanol injection?
  222. How do I most effectively increase HP?
  223. PcmforLess
  224. Performance gains with mods how much?
  225. PCMTune Quest.
  226. Case relearn question.
  227. Noob Question...?
  228. HP tuners / EFI live
  229. PCM for less tune VS. JET Stage 2
  230. PCM for less tune on 2007 I6
  231. PCM Tune & Shift Firmness ?
  232. Tune or Exhaust - What Next?
  233. Pcmforless??
  234. PCM Question
  235. Adding HP
  236. tuning
  237. tuned 4.2 in texarkana area
  238. Engine Tuning
  239. Tunning??
  240. PCMforless VS Westers Garage
  241. JET performance chip
  242. Where do you guys go for performance parts...?
  243. PCM Forless tune. When should I?
  244. pcmforless yah or nah and transmission woahs
  245. Performance Mods HELP?
  246. Concrete numbers for various mods... Anyone interested?
  247. Performance Chip - Stage 2 by JET
  248. Performance Mods?
  249. Proper engine temp./.
  250. Wondering about the E-Fans