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View Full Version : LS4 Performance


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  1. Stupid Question on a Catless DP
  2. In car view from my racecar.
  3. Need some people to get tuned for a group tuning and dyno
  4. Vibration
  5. BuffaLOW...SS
  6. Best mods for top end?
  7. Play in the wheels, is it normal?
  8. I'm a post whore sorry! Car weighs 3580 without driver
  9. Will a 16 or 17" wheel fit the GXP?
  10. Been a while but I'm back!
  11. Oil Bearing Tests...
  12. My Car Went To The Dyno
  13. tires goodyear question
  14. ls4 oil problem?
  15. ALL GM Carlisle Anyone???
  16. rear tire problem
  17. Got to meet a member
  18. tranny issue with 07 impala ss
  19. Question about putting new brakes on.
  20. Aux input jack
  21. SSC Lowering Springs going on Sunday, but...
  22. Need brakes??? Buy your brakes here http://www.notasponsor.com/
  23. extremly strange dealer problem help!
  24. Someday the back of the GXP will look like this
  25. how much will stickier tires affect performance
  26. Tunning #'s please
  27. A couple clean pics and the cutout
  28. Photoshoot: Mr. Burns all clean and tinted!
  29. 08 GXP mods
  30. Chime in those timing/tune #'s on na
  31. McGwires paste gold class wax-the best
  32. E.t. of BONE STOCK 06 Impala SS
  33. Memorial Day
  34. Rubber Motor Mount
  35. So here is what i have come up with????
  36. Anyone interested in my set of Hoosier 245/35/18 tires pics excellent condition
  37. Doing some massive work to my car.
  38. Royal Purple soon to be in my car (see video on first page)
  39. New Rockers for our cars...
  40. My New Tires.
  41. Diablosport, sent this to Mike and I'm still waiting. Read this guys
  42. Power Steering Fluid
  43. doing a lot of work to my car and need some help asap
  44. Help!!wet shot ls4 owners chime in please
  45. Tire Goo
  46. 2005 GXP cars read this Superchips has made support for our cars (getting test file)
  47. Head
  48. Blown tranny?
  49. IAT Temperatures
  50. Help with mufflers
  51. New member with question...
  52. Mpg
  53. SERIOUS READERS LONG!!(N2O/NA-TECH) #7 Plug FRIED!!!
  54. Question about head lights
  55. FS: Monte Carlo SS LOW MILES, CLEAN
  56. 2007 Grand Prix GXP 31k North Central PA
  57. Mechanical O2 simulator works! So far....
  58. Finally!! After 3weeks!!!
  59. MAF and Predator BRAND NEW
  60. First race in the new race car (circle track)
  61. 2006 impala ss preformance mods
  62. Electric Cutout
  63. Another Intake lol
  64. Turning Under radio opening to switch panel
  65. Happy my day at the track!
  66. DynoStorm. Check this out
  67. 2002 Monte Carlo SS Woes
  68. What is a good web site for parts?
  69. Ran 2007 Mustang cobra
  70. Is CAI ripping me off??
  71. lowering my gxp
  72. Black GXP rims
  73. Side Skirts (Rocker Panel Molding)
  74. Straight Pipes
  75. Hogan DP ?
  76. Tire opions.
  77. Will this fast 78mm intake manifold work?
  78. Cutout placement problems
  79. Electrical Gremlin?
  80. Battery issue w 2008 GXP
  81. Drag wheels/radials...specs? Where?
  82. Some Car Mods i have been working on.
  83. FS: 06 MC SS Stereo
  84. Hood protector - reinstalled
  85. LS4 Physical Dimensions
  86. Couple pics
  87. Cigarette burns :(
  88. .83 g's accel
  89. Warranty
  90. The final cam question...maybe
  91. cams on jegs
  92. 2006 impala ss
  93. trifecta custom performance
  94. Tire Dilemma
  95. Nos on a 3.8 series 2?
  96. Selling LS4 Badge
  97. Participated in a parade today...
  98. Maf??
  99. why is the top end so bad? Will tune make it better?
  100. Selling some GXP stuff.
  101. It's here!
  102. Broken valve stem/TPMS
  103. has anyone supercharged the gxp?
  104. **Diablo tuner for sale!!**
  105. lets talk weight reduction...
  106. Getting rims and tires...want some feedback
  107. window tint
  108. Radio Porblem
  109. Bye Bye Impala SS
  110. Build Sheet / RPO Sticker
  111. Track Night
  112. Drag radials
  113. Stock Stall Speed ?
  114. Anyone willing to share a tune?
  115. Does anyone have a tuner on there LS4?
  116. Need tuning suggestions
  117. DEI exhaust wrap
  118. k+n intake
  119. Strut Tower Braces - Front Fitment Issue
  120. Auto start problems?????
  121. SSC Springs - get'em while they're hot!
  122. chuckling...
  123. anyone wanna take over my lease??
  124. New Track Footage
  125. Went to the races.
  126. The BEST tranny cooler?
  127. Got a Superchips Cortex programmer
  128. Water wetter
  129. need help deciding between 2 springs
  130. Quaker State Goes Unchallenged
  131. hey
  132. question about keyless+tire sensor
  133. Welcome myself......
  134. Bye, for now, LS4 owners
  135. A letter to GM
  136. Cross Drilled and Slotted Brakes
  137. Got a Superchips Flashpaq and talked to Mike at Diablosport
  138. Cold Air Inductions-GXP-intake for sale
  139. HUD in my truck
  140. stock rims tire sizes?
  141. Summit Fully Welded Mufflers
  142. My go at a Headlight Intake
  143. Anyone need a set of GXP tips...
  144. How do you all like your LS4 cars?
  145. Caster/Camber Plates
  146. FINALLY got Brakes and Alignment Fixed
  147. Lets hear from the Impala SS
  148. getting some harland sharp 1.8 rockers
  149. "Nice" Email From Pontiac
  150. Track Prep list
  151. Anyone have a used Superchips Cortex programmer
  152. Rocker Arms
  153. Count of Monte Carlo in here
  154. smallest wheels
  155. Tips
  156. stainless steel brake line help
  157. Custom Tune People - Shift Points
  158. 60' Times
  159. GM to cut 21,000 US factory jobs, shed Pontiac
  160. GM is closing down Pontiac
  161. Went to the track over the weekend
  162. wider tires Impala
  163. Does anyone know anything about these coilovers?
  164. aftermarket wheels
  165. getting really tired of having brake issues
  166. New Brakes...
  167. Stb's Installed
  168. How to remove fender vent insert on GXP
  169. Got a New battery & New tires.
  170. exhaust manifolds.
  171. Ported throttle body results
  172. Pontiac is axed as of 4/24/09
  173. Need help asap please!!!!!!!!!!
  174. GXP Side Marker
  175. Sick 4x4 truck
  176. Longevity Of Your Transmissions
  177. Had my 2006 Impala SS tune Yesterday
  178. Flipped motor mount
  179. Anyone have a "How to..." to check for a dead lifter?
  180. New idea
  181. Track Saturday
  182. Another F.N.G
  183. Thank you!!!!!!!!
  184. Chip Chip Chip Everywhere!
  185. Worlds slowest GXp
  186. New era performance ported tb
  187. Something amazing happend
  188. Jimmie Johnson Monte Carlo
  189. Throttle Body
  190. New to forum 2008 ss impala
  191. New Appearance Stuff and Fixed Exhuast Tips
  192. Electronic Throttle amplifier
  193. went to the track tonight
  194. what rotors/pads?
  195. Proform ?'s
  196. A little fun
  197. Kill video
  198. Rustang beat down!!!!!!!!
  199. hooking subs up / Ipod adaptor for stock GM ss radio?
  200. supercatxr7 you have an et goal 11.00
  201. Aftermarket Rims
  202. Looked at a G8 GXP last nite
  203. 5x114.3 and 5x115....come inside.
  204. Did we get a good deal or not? 2006 GXP
  205. 11.49 @ 117 MPH Monte Carlo SS Cartuning Turbo Kit
  206. intake search . . .
  207. Car Issues
  208. Cooling Question
  209. My new part
  210. Okay to drive with different rockers, springs, rods on front 4 and stocks on back 4?
  211. Tire wear. What you got??
  212. Is there any ?
  213. Trade in GTA: 255/45/18 BFG GeForce TA KDW's
  214. Launch
  215. Great deals on Ported LS4 manifolds and TBs
  216. Aaron_Provost
  217. Tranny Line leaking?
  218. Newbie 08 Grand Prix GXP need performance suggestions
  219. Ridiculous stock Cobalt SS/TC track time video
  220. Anyone Got Ideas On Whether This Will Void My Warranty?
  221. racing m3 for $$ this weekend
  222. Lifters
  223. slow/weak rolling idle?
  224. how do i remove the grill?
  225. My Impala SS with Mufflers deleted
  226. What Octane Fuel Do You Use?
  227. 07 imp ss muffler
  228. Pictures I wanna add
  229. Upgrades needed for SS
  230. 06 SS Lowering springs.
  231. Roller-rockers
  232. Monte Sold
  233. New to LS1
  234. New Pics
  235. Impala SS/GXP reliability
  236. Had some fun
  237. HP Tunes?
  238. 11.68 @ 120.81 mph LS4 Car Tuning Turbo Kit
  239. Happy Easter
  240. suprising power difference
  241. Newish guy: '06 Monte Carlo SS
  242. IMPY vs SRT 4
  243. purge
  244. Fan belt
  245. My oil analysis with Amsoil
  246. Demensional sizes of throttle body
  247. Anyone use no wet car wash?
  248. Vibration
  249. WTF: My car has a salvage title?...
  250. GM Ceramics on Impala SS?