I have a 02 WRX wagon with about 115k on it that has been getting random misfires on all cylinders. Here is a list of mods:
• VF22 Turbo
• Walbro 255 fuel pump
• Perrin short ram intake
• Grimmspeed boost controller
• Light weight flywheel
• MRT Downpipe
• MRT Cat Back Exhaust
I am still in contact with the original owner and he never had issues with random misfires, even with the light flywheel. Here is a list of things I have tried:
• Cleaned maf
• Replaced fuel filter
• New plugs x3: NGK Iridium BKR6EIX / NGK Platinum PFR6G/ NGK/Platinum PFR7G/ All gapped at .028
• Compression test @ 150 psi per cylinder
• Cleaned crank sensor
• Good fuel pressure
• No vacuum leaks
• New pcv
• Double checked all clips to coil packs
• Replaced coil packs
• Seafoamed Top End
• All grounds are good and clean
• Replaced Y pipe / All intercooler hoses and gaskets
• Cleaned battery terminals
• Fuel injector cleaner
This all started when I decided to do a tune up and replace the plugs. I have replaced the plugs three times now in the order mentioned above. As mentioned above the previous owner said he had the ACT lightweight flywheel installed for about 20k with NO issues. Car has been professionally tuned by a local shop for supporting mods. I am running out of ideas here! And yes I have read the following thread:
IF YOU HAVE A MISFIRE CODE ,PLEASE READ THIS!!!
• VF22 Turbo
• Walbro 255 fuel pump
• Perrin short ram intake
• Grimmspeed boost controller
• Light weight flywheel
• MRT Downpipe
• MRT Cat Back Exhaust
I am still in contact with the original owner and he never had issues with random misfires, even with the light flywheel. Here is a list of things I have tried:
• Cleaned maf
• Replaced fuel filter
• New plugs x3: NGK Iridium BKR6EIX / NGK Platinum PFR6G/ NGK/Platinum PFR7G/ All gapped at .028
• Compression test @ 150 psi per cylinder
• Cleaned crank sensor
• Good fuel pressure
• No vacuum leaks
• New pcv
• Double checked all clips to coil packs
• Replaced coil packs
• Seafoamed Top End
• All grounds are good and clean
• Replaced Y pipe / All intercooler hoses and gaskets
• Cleaned battery terminals
• Fuel injector cleaner
This all started when I decided to do a tune up and replace the plugs. I have replaced the plugs three times now in the order mentioned above. As mentioned above the previous owner said he had the ACT lightweight flywheel installed for about 20k with NO issues. Car has been professionally tuned by a local shop for supporting mods. I am running out of ideas here! And yes I have read the following thread:
IF YOU HAVE A MISFIRE CODE ,PLEASE READ THIS!!!