05 wrx misfire all cylinders PLEASE HELP!!
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This is a discussion on 05 wrx misfire all cylinders PLEASE HELP!! within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Aloha, I have a 2005 wrx with the following mods: Deatschwerks 850cc injectors DW 255lph fuel pump Bloutch 16g xt ...

  1. #1
    Registered User
    Join Date
    May 2015

    Unhappy 05 wrx misfire all cylinders PLEASE HELP!!

    I have a 2005 wrx with the following mods:

    Deatschwerks 850cc injectors
    DW 255lph fuel pump
    Bloutch 16g xt turbo
    K&n short ram air intake with heat shield
    Grimmspeed 3 port solenoid
    Perrin turbo inlet tube
    Perrin equal length headers
    Invidia catless UP/divorced DP
    Sti oil pan
    Killer bee oil pickup
    Aem uego wideband
    Invidia N1 cat back exhaust
    STI intercooler
    Turbo smart dual port bov set at 50/50
    Perrin lightened crank pulley
    Exedy streetlight flywheel
    Exedy Stage 1 organic heavy duty clutch
    Gates racing timing belt kit/water pump
    Mishimoto Racing low temp 154° thermostat
    Perrin engine mounts and pitch stop
    TGV deletes
    3mm phenolic spacers
    Ngk 1 step colder plugs (brand
    Okada plasma coil packs
    Grimmspeed aos

    205/70r15 all terrain tires
    Daily driver
    Rally suspension

    I am having one hell of a misfire problem and no matter what I try and do it doesn't seem to go away.

    I have done the following in an attempt to fix the problem:

    New Ngk iridium plugs triple checked gaps
    All new exhaust system gaskets
    Leak down test
    Compression test
    Intake pressure test
    Exhaust in radiator test
    Checked timing
    Cleaned and checked with new gasket the iacv
    New plasma coil packs
    New front O2
    New rear O2
    New crank sensor
    TGV deletes
    Grounding kit
    Cleaned maf
    Replaced maf
    New map sensor
    Checked fuel pump
    Tested fuel pressure
    Replaced fpr with Tomei fpr
    Replaced fuel filter
    I have an aos so it's not blow by
    Replaced plastic coil connectors both the black and the whites
    Changed to full synthetic RP

    Tried to have it tuned out and tuner gave up and said there's nothing he can do

    My mechanic has no idea and has never seen a car do this, this badly.

    Is there anything I missed it that anyone would recommend trying. I'm feeling very defeated...

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  3. #2
    Registered User
    Join Date
    May 2015
    Forgot to mention I pulled off the perrin pulley and put stock back on and made no difference

  4. #3
    Registered User Obeisance's Avatar
    Join Date
    Apr 2012
    not Ann Arbor
    There are probably other things listed in the big misfire thread...

    How about the crank position sensor? Fuel quality? Injector cleaner?
    David - '05 WRX

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