View Full Version : PCM Diagnostics & Tuning



  1. Bad o2's
  2. How to fix "railing" O2's??
  3. "Real Time" LS1 tuning for the US Market.
  4. Used HP Tuners for the first time today!! :)
  5. Multiple codes - short circuit?
  6. Dumbass 87 octane
  7. 94 Lt1::Going from 52mmTB to a 48mm stocker????
  8. traction control
  9. what does ve actually stand for? etc.
  10. (LS1Edit) Ltrims by RPM, sudden change from + to -
  11. (LS1Edit) Car is lean on initial WOT tip in... what to change?
  12. Need Help ASAP! Unable to connect to PCM!
  13. Cylinder Volume
  14. Generator Code
  15. P0336, questions!
  16. Cyl Volume
  17. My PCM is done, where to buy a new one
  18. 2 DTCs, and what do i look for to fix them..
  19. LS1 Edit: Can a table be copied in from Excel?
  20. LTB2 Running 11.7
  21. Just bought hp tuners
  22. P0123
  23. wtf.! getting this nagging PO121 code
  24. tuning ?
  25. Car keeps dying when I turn the A/C on.
  26. Mucho codes here - Yikes!
  27. Mail order pcm?
  28. Question on VMC "learning" your driving habbits.
  29. Help, P1133 HO2S Insufficient Switching Bank 1 Sensor 1
  30. I can't toggle my 121 code??
  31. 02 Z06 MAF table help
  32. po106 after h/c install.
  33. Need help , PCM trouble?
  34. TR224/114/112 tuning question
  35. Speed Density and Timing
  36. M6 and Skip Shift Question
  37. HP Tuners Question about Open Loop F/A Vs.Coolant Temp vs. MAP
  38. a/c and heater controls
  39. MAF observation I made, Holden LS1
  40. Speed density people...what to replace my MAF with?
  41. Tuning problem with STS turbo
  42. o2 voltages on decel low, because of long tubes?
  43. The infamous P0101 after BIG cam, anyone been here before?
  44. Something to consider with HP Tuner...
  45. gameover...question regarding an incomplete speed density related post
  46. looking
  47. Misfire at high speed
  48. Anyone have stock '03 Z06 LSIEdit file?
  49. WB 02 result & Question
  50. looking for pinout for bench harness.
  51. Where to start to tune new 408 with ls1edit?
  52. EFIlive flash scan VS HP tuners VS LS1 edit.which one to go with?
  53. Can't get my laptop to talk with my car.(help)
  54. slp tune?
  55. 231/237 cam red line??
  56. Help... need help asap.. 02 not cross counting with maf plugged in...
  57. Switching to 6.0L.... what do I change?
  58. 3.42 A4 guys, can I see your shift tables?
  59. how do you guys attack KR? Average or max?
  60. who has there hands on a big stuff?
  61. A/F mixture Guage Question
  62. Tranny shifting early/late
  63. Service vehicle light and crank relearn.
  64. A/C Idle issues in Y-Body and stalling when the throttle is slammed shut
  65. Survey: How much airflow at idle.
  66. Will O2 extentions affect tuning????
  67. How much HP from tuning stock car?
  68. Need the MAF Table
  69. Hot and Cold Start up surge Open Loop Question
  70. crunk down the mv on bank1/2 o2
  71. a place to tune near Greenville SC?
  72. wide bands????
  73. My theory of the Maf and its inacuracies (sp)
  74. Open loop WOT question
  75. First time user with HPTUNERS
  76. problems with a/f ratio
  77. Data logging a wb/autotap?
  78. info
  79. PCM pin assignments...
  80. O2 sensor cause a misfire? ???
  81. Initial Tuning on My First Blower Car
  82. HP Vs. LS1Edit - what is the difference?
  83. dead spot at wot
  84. anyone experienced with hptuners a few hrs. from dallas area? will pay for help!!!
  85. Going from Closed Loop to Open loop?
  86. Throttle position sensor insufficiant ac?
  87. HPtuners!!! come inside.
  88. adding intercooler, meth, and tuning
  89. Cavalier ?
  90. How to eliminate the detonation at tip-in/half throttle? LS1 Edit
  91. My MAF is the root of all evil
  92. Question for the MAF gurus
  93. knock retard and questions.
  94. If I install SVo 30 injectors what will I have to change?
  95. LS1 Timing Tuner
  96. help please car wont start after i messed with computer hptuners
  97. PCM won't hold memory?
  98. Need Advice on the PE for Nitrous Car
  99. HPTuners set the main spark table enable to 0.0
  100. Just sent an email to GM
  101. HP tuners is the greatest....
  102. DTC P0101 MAF code with big cams?
  103. Hp tuners
  104. Any handheld alternative to Ls1 edit?
  105. Predator not uploading/I'm stressing
  106. ?? on a 95 trans am
  107. Can HPTuners read your PCM after LS1edit tuning?
  108. Predator custom tune any good?
  109. F-body vs C5 PCM tune..
  110. Stoich value...can someone answer some questions?
  111. Can I look at your trans table?
  112. Who is close that can dyno tune my car
  113. Aha. Don't I feel stupid. Tuning fuel trims with and without MAF plugged in...
  114. random misfire, cant figure out whats wrong
  115. A4 Predator Users!
  116. Contact info. OBD2 software company??
  117. idle timing for h/c cars?
  118. Ve tuning
  119. If I disconnect the MAP sensor can I tune my MAF?
  120. predator tunning?
  121. Desired IAC counts...jumping anywhere from 16 to 458?
  122. Explain this to me...
  123. MAF flow logs ... dips here & there ?
  124. Got my laptop for the HPTuners!
  125. High TPS voltage During Hard Acceleration
  126. Running rich causing missfires?
  127. What is your Commanded AFR at start-up?
  128. G5X3 Hot Start
  129. Could my BCM be bad???
  130. OBD II software
  131. Quick question?
  132. Help! Killed my guages, now the dang thing won't even start
  133. LTFT and multiple WOT runs
  134. 98 firebird modifications
  135. How do MSD rpm pill work?
  136. K.p.h. Default
  137. Can you have a bad o2 sensor w/out throwing a code?
  138. P0449 code-Driveability Problems
  139. How much timing are you running at WOT?
  140. FART! I gotta a P1133 code!!1
  141. Help! Car wont go into Decel DFCO
  142. VERY slight negate TPS voltage. BAD?
  143. how to connect hp to new labtop
  144. MAF question
  145. Will I pass Virginia emissions (sniffer) test?
  146. Vacuum with Hotcam?
  147. What does this mean?????
  148. Power to the PCM?
  149. hay guys need help with finding good tuninst in the bay area
  150. Please help! how to delete/revise torque management?
  151. Wideband install questions (preferably Zeitronix)
  152. OBD I ECM Scanning / Logging using a PDA - do they exist?
  153. Banks 1&2 rich, over and over again, HELP
  154. Book for tuners??
  155. Does anyone have Stock TM for a 1999 LS1 F car with HP Tuners?
  156. Hptuner 2002
  157. trans not shifting
  158. smog test question
  159. Cranking A/F ratio
  160. check engine code P0430
  161. just bought a hypertech and what setting do you guys or gals use?
  162. Upgrade my Autotap????
  163. I searched....Anyone have the real Bosch part # for the WB LSU 4 sensor?
  164. How do you tune "idle air in gear, moving, throttle closed" with HP Tuners?
  165. Car is throwing every O2 sensor code in PCM
  166. Spark Retard
  167. A4 changes with LS-1 Edit?
  168. Shifts early into OD, can tuning fix this?
  169. 98 Model ECU question
  170. 0757 Shift Solenoid Stuck on question
  171. Arlington DFW area tuner needed please read!
  172. predator
  173. hesitation
  174. New cam and the car hardly goes into
  175. Gremlins in my carss computer
  176. service engine soon light
  177. Any Nor-cal Tuners?? Help!!!
  178. 96 Saturn EGR - how does it work
  179. Dyno Tune Special
  180. FAST vs Electromotive Tec 3
  181. just installed 02 sims, question
  182. Wideband O2 question
  183. Torque by gear table???
  184. Car Wont Down Shift At WOT At Mid RPM After Trex Install
  185. Engine running hot.... PCM issue maybe????
  186. Shiftlight install problems HELP!!
  187. maf vs. frequency calibration for slp maf
  188. Need Simple Help In Picking A Tuner
  189. Is HP tuner worth getting for a stock motor?
  190. Copying High Octane table to low table???
  191. Tunning In Texas??
  192. Is HP Tuner Going to Change Anything?
  193. Question about Surging on Hot and Cold Starts
  194. Preditor Question
  195. OPEN LOOP TUNING Special in Texas..
  196. hp tuners or ls1 edit?
  197. COTS, o2 delete, rich idle
  198. o2 sensor error codes
  199. Auto Tap
  200. accel Gen 7 HELP!!
  201. Voltage limitations of TPS and "PE" mode issues (FAST intake & TB)
  202. Please Help me ,why does my 2nd auto tap run have KR
  203. Throwing P1132 and P1152 Lack of Upstream Heated Oxygen Sensor Switch codes
  204. Common 98 Issue? P0103 and Blowing Engine Control Fuse
  205. idle setting problem with set screw, filled hole, already searched
  206. Running RICH......I need to resolve this,,, i'm stumped
  207. Aha...I figured out why I am in cell 22.
  208. Question On Choosing Tuner
  209. Reset PCM before warranty - Possible??
  210. code isnt setting off the SES light
  211. what codes do i remove for stall for 02
  212. Getting codes without scanner
  213. Speedo with Gen VII
  214. Scanned my car with FreeScan. Can anyone analyze data please?
  215. Should I smell like I bathed in 93 octane after sitting still?
  216. What could cause a misfire??
  217. WARNING: LS1 Edit & GM Column Lock Recall Don't Mix
  218. Some tuning issues
  219. Question for guys with engine management Accel/Fast/BSIII
  220. What is the formula to convert HP Tuners airflow to IAC counts?
  221. cam install
  222. Rich idle, o2 voltages normal, medium cam
  223. Hp tuning on nitrous
  224. Running boost on a 1 bar MAP sensor
  225. TC lockup with tuning?
  226. Hypertech Question. ( yes another one )
  227. Who is the Cheapest for Bosch o2 sensors?
  228. Anyone do tuning on an exchange basis?
  229. Emissions code questions
  230. Where to get a good deal on a used laptop
  231. short term fuel trims
  232. Desired Shift Time
  233. Does anyone know what the TCC logs numbers should be?
  234. PCM > 02 Sims vs. Sensors > Cats vs. no Cats
  235. Idle Tuning - is it rich or lean?
  236. LS6 Swap HELP
  237. Weird Idle after throwing P1133 code???
  238. Stoich question...my 98 has 14.62857, every other year I've seen has 14.737?
  239. Torque Managment, Yes or No
  240. Body Control Module Problems after Dash Removal(Pics and Questions)
  241. Should I be concerned,Greyish-white smoke,Tune or something else?
  242. MAF Table
  243. What is normal g/cyl at WOT on an LS1?
  244. cam installed, accessory problem
  245. Runs bad
  246. help with neighbors car
  247. How much does tuning help drivability?
  248. need help with these codes
  249. Need to lookup an SES Code? look here
  250. USB to Serial Adaptor - LS1 Edit