View Full Version : LS4 Performance


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  1. Borla exhaust?
  2. Exhaust cutout
  3. WTB fuel Rail
  4. LS6 or LS1 Manifold swap thoughts Questions
  5. Merry Christmas everyone!
  6. need a big favor
  7. Chrome plated grille
  8. Air Filter Question
  9. 2K6 Impala SS 6 Disc Changer Issue
  10. Which ls4 to get?
  11. quick question for the guys with HP tuners.
  12. What i did today
  13. LS4 Calendar on Sale Now
  14. 2000-2005 Monte Carlo headlights and tails for sale
  15. GXP Exhaust or Mufflers??
  16. Paypal Scam
  17. LS4 guys help with W-body.
  18. Anyone want the dyno results from my intake swap?
  19. rim and tire bargin
  20. New driveby...Hogan DP + Cutout
  21. lowering
  22. Hows it going... Newbie
  23. Recall for GXP
  24. got another Impala SS
  25. Help! 2005 GTP Monsoon speaker popping noise!
  26. North America's LS4 2010 Calendar
  27. Evil Mr. Winter came to NOVA/DC/MD/VA area, Poor Gxp has been abandoned...
  28. I would like to apologize for the other thread. (Paint opinions, not like the other)
  29. 05 GXP with heater control issues
  30. Let the hate and flames flow, pics of my car.
  31. Interested in TB spacer or adapter
  32. Looking at getting a gxp?
  33. Gauge Pods
  34. Got my Cutout! Brand,Placement, Sound, Vids, Pictures, Mods ect.
  35. LS6 throttle body
  36. Yearly reminder of the 'mistatements' from Diablosport
  37. Little slip in my tranny @ 54,445 miles
  38. tire size
  39. craigslist find
  40. World of Wheels
  41. couple problems with the gxp
  42. Every error you can think of just popped up....
  43. WTB Monte Carlo Foglight Trim
  44. Used W-Bodies
  45. the delcos dead
  46. Possible Transmission Failure in the works (again)
  47. its that time again
  48. Normal/Average Engine Coolant Temp...
  49. 05 gxp cai??
  50. Do Mustang Wheels fit? (sorry)
  51. 2007 Impala ls modding
  52. HID ballast mounting?
  53. Need Muffler Help!
  54. pretty impressed!!
  55. Dyno Chart DISCUSSION thread
  56. Dyno Charts Go Here
  57. Any Dyno mumbers with a Cam?
  58. Spare Tire for '08 GXP ??
  59. 2010 Calendar
  60. LS4 cam specs
  61. I miss the GXP, mostly, the TURBO :(
  62. tranny :(
  63. New Tires for me 2
  64. TPMS and 2008 GXP question
  65. Help me sort out whats true
  66. Should Diff Score Be this intrusive?
  67. Rear Defogger ?
  68. Need some help deciding on a Hand-held tuner
  69. For those worried about voiding your warranty when modding READ!
  70. For those who have done the intake swap already
  71. issues with stage 2 intake so i am putting an ls6 intake and headers on
  72. Cutout questions
  73. car bogging
  74. Question for you guys???
  75. Any way to make a ram air intake?
  76. Most Fun in a FWD
  77. Shocks and springs?!?!
  78. Tire Size Dilemma
  79. 5300 LS4 into a Grand Prix GT
  80. Cardi Gras benefit for Cystic Fibrosis
  81. for those of you who store you MCSS: car cover
  82. Look What I've Found
  83. Finally got some good 1/4 mile times w/VIDS
  84. crankshaft dimensions
  85. Am I The First Here?...
  86. Will 265 or 275 tires fit on stock rims?
  87. Successful LS6 Intake Manifold Swap, DOD Retained
  88. Escort Qi45 Finally Available
  89. Happy Thanksgiving
  90. My New Snow Boots
  91. GXP got crunched
  92. Odd Hesitation
  93. traded in the SS for a Hybrid Prius
  94. Nitrous Users
  95. 07 GXP alignment problem
  96. New Winter tires.
  97. Confirm my bad news... Tranny Problem
  98. supercharger question/suggestion
  99. Intake Installation Question
  100. Transmission Labor Costs
  101. Subs
  102. GXP Front Brakes Keep Warping
  103. problem with low beams
  104. Looking for pictures of stock manifolds
  105. What's my Impala SS worth?
  106. LED Lighting Strips - 2006 Impala SS (56k death)
  107. TPMS question
  108. intake issue
  109. Cheapest place to get magnaflow catback
  110. Results from cam, intake port, heads etc
  111. Another Exhaust Question
  112. had a run in with an IS-F today
  113. 245 45 18 Montepala Owners
  114. Looking for transmission build info
  115. cam question, how big is too big.....
  116. Quick paint, would like opinions
  117. The SS is dead
  118. Crane Cams 1.8 Rockers
  119. GXP fuel mileage ??
  120. GXP fuel mileage ??
  121. Thorley Header Project Update
  122. wideband tune vs dyno tune
  123. Manifold swap kit - coming soon!
  124. G8 DOD Hight Lift Cam
  125. Concerned About Performance
  126. 1998 BMW M3 vs Monte Carlo LS4
  127. Did this turbo Monte belong to anyone here?
  128. How I painted my rear bow tie black.
  129. "retard alert retard alert"
  130. Ft Myers, Gainesville S. Florida (Davie) Formato Tuning and Porting
  131. Made it to the track, bone stock numbers:
  132. Any underdrive pulleys available for LS4?
  133. New Owner, Couple Questions
  134. Those of you with a Hogan catless DP please read
  135. Dash Question
  136. Any of you guys make this switch?
  137. 275/40/17 fit???
  138. New Tires!
  139. Upgraded fuel pump?
  140. Will 97-03 rims fit an 06 GXP?
  141. Finally went to the track
  142. CofM voting thread
  143. Amp Service Bulletin
  144. a few favors from you ls4 guys
  145. Replaced the F1's - Finally Can Hear Again!
  146. My GXP in its "Play Shoes"
  147. valvetrain upgrades.
  148. HIDs
  149. LS6 Manifold Idea
  150. New GXP Owner 2005 Mystic Teal
  151. Ported Intake and TB
  152. Look at the shine I have on my 14 year old GP
  153. Look what we saw on the way home
  154. Custom License plate...
  155. Planning on joining the ranks of supercat and others
  156. Dyno numbers, sound about right??
  157. Would this work?
  158. I-shaft
  159. smoked head/tailights
  160. Picked up a 2005 GXP
  161. looking at ls4's
  162. Tap shift tranny?
  163. HP tuner advice?
  164. Spring swap?
  165. Trip to Bowling Green, KY
  166. A few fall picture shots.
  167. Push Bar
  168. ebay brakes!!!!!
  169. Any gxp or ls4 guys in the Northern VA area?
  170. Me vs. SBC RX-7 (video evidence)
  171. GXP times
  172. Vibration Damper/Harmonic Balancer
  173. GXP Help 05 v8
  174. Check Engine Light
  175. Best Brake Pads for Grand Prix GXP
  176. HIDs
  177. K&N Intake burning hood liner?
  178. SOB Car show: Sheriff office Benifit
  179. Colors for hood stripes
  180. Enjoy
  181. Went to the Track today...
  182. I guess I'll start this one, too. Calendar attempt No. 2
  183. Had a run against a last gen firechicken
  184. 18X8's vs 18X7's
  185. Car of the Month Submission Thread October Ed.
  186. Monte Carlo SS of the month
  187. For those of you who have blown transmissions
  188. FS: K&N Intake 63-3059 06-09 Impala SS
  189. Upper Motor Mounts...Which is best??
  190. custom steering wheel emblem
  191. strange exhaust sound
  192. What Shift Kit for GXP?
  193. For those who think our intake is restricted
  194. Gone
  195. Torque Converter Problems
  196. In the market for new mufflers
  197. Wider rear tires for GXP...for the look
  198. For you Cali guys: new HOV lane sticker
  199. V8 Fiero with an LS4
  200. gxp led tailights question...
  201. F/S hogan catless DP
  202. Ragin Racin is South Louisiana Lafayette, LA
  203. How Wide Can I Go?
  204. Help!!
  205. Lighting questions
  206. How much does a tranny cost?
  207. GXP Fog Light Help
  208. Changine the Radio
  209. Headers....but need 30 people.
  210. opinions on race seats
  211. Launching...
  212. HIDs for aftermarket halo headlights
  213. Electric Cut out
  214. A Couple Tire Questions
  215. muffler thoughts
  216. so what the word on the new SHO boys?
  217. Huge Car Cover Sale....
  218. Did a little work
  219. 06 impala ss
  220. 9006 to D1S bulb adapters?
  221. video of Dynomax Ultra-flo's/no resonator
  222. 08 GXP anyone?
  223. anybody see these headers
  224. traded GXP for modded 95 civic.
  225. So batteries do explode after all lol
  226. ChromeIntakes on Ebay.
  227. Been a while parts that will be going...
  228. Rebuild Questions
  229. GXP Tapshift
  230. Negative Camber ad Winter Tires
  231. Electrical Problems
  232. HPTuners
  233. need you guys help.
  234. FS: K&N Intake and 2006 LS4 ECM/TCM
  235. Axle Repair
  236. Anyone buy from brakeperformance.com...and have some mileage on the products?
  237. will straight pipes throw engine light
  238. Custom engine covers
  239. Brakes
  240. Drive belt replacement] "Maybe Stickey"
  241. Modified GXPs Air-Box
  242. STB's for sale
  243. Got it narrowed down
  244. LS4 headers
  245. Pics from a car meet last night (lots of them)
  246. New LS4 Owner! I Got Questions...
  247. Hogan DP and Tuner
  248. genesis coupe
  249. (Experts only, ahem Mixerda) About to order cam and heads
  250. Serpentine belt replacement