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View Full Version : LS4 Performance


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  1. Lowering question
  2. Will 04 Comp G rims fit my 08 Grand Prix GXP ?
  3. god awful fuel economy grand prix gxp
  4. the root of our Mod problems
  5. need some help
  6. how high should i set my revs
  7. Those of You Who Have Poly Dog Bone Mounts
  8. different remote range problem
  9. I had the brakes done and there is vibration
  10. **Garage cleaning**
  11. 3 questions from a newbie
  12. 2007 Impala SS
  13. new to site
  14. Hi from Iraq
  15. FS Cold Air Inductions intake
  16. Track Day
  17. Cold Start / Tranny Question
  18. Performance Parts I think this platform needs
  19. Heat Soak Reduction w/ nitrous.
  20. Few track vids...
  21. Smooth Intake Bellow
  22. 27th All G.M. Car/Truck Show & Swap Meet
  23. I lost to an 350Z
  24. LS4 exhaust manifolds WTB
  25. Removed my fan belt
  26. Heat soak Reduction Kit sensor location?
  27. **Sold car= parts to sell!!**
  28. Random Dents--08 Lacrosse Super
  29. I Need To Figure Out How To Work On My Engine
  30. think i can end heat soak with this idea
  31. new pics of my Grand Prix GXP
  32. Stupid Question on a Catless DP
  33. In car view from my racecar.
  34. Need some people to get tuned for a group tuning and dyno
  35. Vibration
  36. BuffaLOW...SS
  37. Best mods for top end?
  38. Play in the wheels, is it normal?
  39. I'm a post whore sorry! Car weighs 3580 without driver
  40. Will a 16 or 17" wheel fit the GXP?
  41. Been a while but I'm back!
  42. Oil Bearing Tests...
  43. My Car Went To The Dyno
  44. tires goodyear question
  45. ls4 oil problem?
  46. ALL GM Carlisle Anyone???
  47. rear tire problem
  48. Got to meet a member
  49. tranny issue with 07 impala ss
  50. Question about putting new brakes on.
  51. Aux input jack
  52. SSC Lowering Springs going on Sunday, but...
  53. Need brakes??? Buy your brakes here http://www.notasponsor.com/
  54. extremly strange dealer problem help!
  55. Someday the back of the GXP will look like this
  56. how much will stickier tires affect performance
  57. Tunning #'s please
  58. A couple clean pics and the cutout
  59. Photoshoot: Mr. Burns all clean and tinted!
  60. 08 GXP mods
  61. Chime in those timing/tune #'s on na
  62. McGwires paste gold class wax-the best
  63. E.t. of BONE STOCK 06 Impala SS
  64. Memorial Day
  65. Rubber Motor Mount
  66. So here is what i have come up with????
  67. Anyone interested in my set of Hoosier 245/35/18 tires pics excellent condition
  68. Doing some massive work to my car.
  69. Royal Purple soon to be in my car (see video on first page)
  70. New Rockers for our cars...
  71. My New Tires.
  72. Diablosport, sent this to Mike and I'm still waiting. Read this guys
  73. Power Steering Fluid
  74. doing a lot of work to my car and need some help asap
  75. Help!!wet shot ls4 owners chime in please
  76. Tire Goo
  77. 2005 GXP cars read this Superchips has made support for our cars (getting test file)
  78. Head
  79. Blown tranny?
  80. IAT Temperatures
  81. Help with mufflers
  82. New member with question...
  83. Mpg
  84. SERIOUS READERS LONG!!(N2O/NA-TECH) #7 Plug FRIED!!!
  85. Question about head lights
  86. FS: Monte Carlo SS LOW MILES, CLEAN
  87. 2007 Grand Prix GXP 31k North Central PA
  88. Mechanical O2 simulator works! So far....
  89. Finally!! After 3weeks!!!
  90. MAF and Predator BRAND NEW
  91. First race in the new race car (circle track)
  92. 2006 impala ss preformance mods
  93. Electric Cutout
  94. Another Intake lol
  95. Turning Under radio opening to switch panel
  96. Happy my day at the track!
  97. DynoStorm. Check this out
  98. 2002 Monte Carlo SS Woes
  99. What is a good web site for parts?
  100. Ran 2007 Mustang cobra
  101. Is CAI ripping me off??
  102. lowering my gxp
  103. Black GXP rims
  104. Side Skirts (Rocker Panel Molding)
  105. Straight Pipes
  106. Hogan DP ?
  107. Tire opions.
  108. Will this fast 78mm intake manifold work?
  109. Cutout placement problems
  110. Electrical Gremlin?
  111. Battery issue w 2008 GXP
  112. Drag wheels/radials...specs? Where?
  113. Some Car Mods i have been working on.
  114. FS: 06 MC SS Stereo
  115. Hood protector - reinstalled
  116. LS4 Physical Dimensions
  117. Couple pics
  118. Cigarette burns :(
  119. .83 g's accel
  120. Warranty
  121. The final cam question...maybe
  122. cams on jegs
  123. 2006 impala ss
  124. trifecta custom performance
  125. Tire Dilemma
  126. Nos on a 3.8 series 2?
  127. Selling LS4 Badge
  128. Participated in a parade today...
  129. Maf??
  130. why is the top end so bad? Will tune make it better?
  131. Selling some GXP stuff.
  132. It's here!
  133. Broken valve stem/TPMS
  134. has anyone supercharged the gxp?
  135. **Diablo tuner for sale!!**
  136. lets talk weight reduction...
  137. Getting rims and tires...want some feedback
  138. window tint
  139. Radio Porblem
  140. Bye Bye Impala SS
  141. Build Sheet / RPO Sticker
  142. Track Night
  143. Drag radials
  144. Stock Stall Speed ?
  145. Anyone willing to share a tune?
  146. Does anyone have a tuner on there LS4?
  147. Need tuning suggestions
  148. DEI exhaust wrap
  149. k+n intake
  150. Strut Tower Braces - Front Fitment Issue
  151. Auto start problems?????
  152. SSC Springs - get'em while they're hot!
  153. chuckling...
  154. anyone wanna take over my lease??
  155. New Track Footage
  156. Went to the races.
  157. The BEST tranny cooler?
  158. Got a Superchips Cortex programmer
  159. Water wetter
  160. need help deciding between 2 springs
  161. Quaker State Goes Unchallenged
  162. hey
  163. question about keyless+tire sensor
  164. Welcome myself......
  165. Bye, for now, LS4 owners
  166. A letter to GM
  167. Cross Drilled and Slotted Brakes
  168. Got a Superchips Flashpaq and talked to Mike at Diablosport
  169. Cold Air Inductions-GXP-intake for sale
  170. HUD in my truck
  171. stock rims tire sizes?
  172. Summit Fully Welded Mufflers
  173. My go at a Headlight Intake
  174. Anyone need a set of GXP tips...
  175. How do you all like your LS4 cars?
  176. Caster/Camber Plates
  177. FINALLY got Brakes and Alignment Fixed
  178. Lets hear from the Impala SS
  179. getting some harland sharp 1.8 rockers
  180. "Nice" Email From Pontiac
  181. Track Prep list
  182. Anyone have a used Superchips Cortex programmer
  183. Rocker Arms
  184. Count of Monte Carlo in here
  185. smallest wheels
  186. Tips
  187. stainless steel brake line help
  188. Custom Tune People - Shift Points
  189. 60' Times
  190. GM to cut 21,000 US factory jobs, shed Pontiac
  191. GM is closing down Pontiac
  192. Went to the track over the weekend
  193. wider tires Impala
  194. Does anyone know anything about these coilovers?
  195. aftermarket wheels
  196. getting really tired of having brake issues
  197. New Brakes...
  198. Stb's Installed
  199. How to remove fender vent insert on GXP
  200. Got a New battery & New tires.
  201. exhaust manifolds.
  202. Ported throttle body results
  203. Pontiac is axed as of 4/24/09
  204. Need help asap please!!!!!!!!!!
  205. GXP Side Marker
  206. Sick 4x4 truck
  207. Longevity Of Your Transmissions
  208. Had my 2006 Impala SS tune Yesterday
  209. Flipped motor mount
  210. Anyone have a "How to..." to check for a dead lifter?
  211. New idea
  212. Track Saturday
  213. Another F.N.G
  214. Thank you!!!!!!!!
  215. Chip Chip Chip Everywhere!
  216. Worlds slowest GXp
  217. New era performance ported tb
  218. Something amazing happend
  219. Jimmie Johnson Monte Carlo
  220. Throttle Body
  221. New to forum 2008 ss impala
  222. New Appearance Stuff and Fixed Exhuast Tips
  223. Electronic Throttle amplifier
  224. went to the track tonight
  225. what rotors/pads?
  226. Proform ?'s
  227. A little fun
  228. Kill video
  229. Rustang beat down!!!!!!!!
  230. hooking subs up / Ipod adaptor for stock GM ss radio?
  231. supercatxr7 you have an et goal 11.00
  232. Aftermarket Rims
  233. Looked at a G8 GXP last nite
  234. 5x114.3 and 5x115....come inside.
  235. Did we get a good deal or not? 2006 GXP
  236. 11.49 @ 117 MPH Monte Carlo SS Cartuning Turbo Kit
  237. intake search . . .
  238. Car Issues
  239. Cooling Question
  240. My new part
  241. Okay to drive with different rockers, springs, rods on front 4 and stocks on back 4?
  242. Tire wear. What you got??
  243. Is there any ?
  244. Trade in GTA: 255/45/18 BFG GeForce TA KDW's
  245. Launch
  246. Great deals on Ported LS4 manifolds and TBs
  247. Aaron_Provost
  248. Tranny Line leaking?
  249. Newbie 08 Grand Prix GXP need performance suggestions
  250. Ridiculous stock Cobalt SS/TC track time video