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madmike

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Posts posted by madmike

    EJ20G High RPM Misfire, Where do I Start?

    in Engine Related

    Posted

    42 minutes ago, piopio said:

    Seems to be slightly better on long drives. Otherwise its consistent.

    I gapped all plugs to 0.45mm and little to no difference, I will be trying new copper plugs instead of platinum. Coil on pack. 

     

     

    I'm wondering if maybe you are having the same issue i was having with my old motor..
    Ihad a reall nasty miss and loss of power at 5500 RPM umder load that i could not figure out.. Tried everything.

    I ended up chucking it on Keith Stewarts dyno and he diagnosed it as valve float.. This was an original unknown kms engine that apart from the miss at higher RPM's and load would perform really well...
    Yours has quite hig Km's so its a possibility i guess...

    Only way to really diagnose may be to chuck it on a dyno and get a full health check. 

    Personalised number plates

    in General Vehicle Discussion

    Posted

    On 16/10/2020 at 9:30 PM, Gripless said:

    That sounds like a nightmare. VTNZ are great at not knowing WTF they are talking about. Been to one that didn’t even know what LVVTA cert plate was. 

     

    They are a pain in the ass to get hold of.. But once  you do get a human they are okay.

    took me 2 weeks to get approval to reuse my black numberplates on a bike i was putting through recertification.

     

    EJ20G High RPM Misfire, Where do I Start?

    in Engine Related

    Posted

    10 hours ago, piopio said:

    I'm looking for advice regarding chasing down an intermittent high rpm misfire. The car is a GF8 impreza with an ej20G engine. Under high load high and over 5500RPM I am suffering a loss of power and torque and what feels like a misfire. Under light load I don't think I feel a misfire. So far I have replaced all plugs and tried gapping to 0.6mm. I have also tried a different set of coils with no luck. Otherwise the car drives perfect at low RPM other than sometimes taking a long time to start when hot. The engine is high km with 250,000km. Is it worth doing a compression check?

     

    I am at the point where I am not sure what to replace next. I'm thinking crank and cam sensors. Or doing the 2002 WRX coil pack upgrade. After that I feel a I might have to start looking a general engine health closely? 

    couple of quick questions.. 

    Does it do this when the motor is cold?
    Does it get worse as the engine warms up?

    • Like 1

    Personalised number plates

    in General Vehicle Discussion

    Posted

    6 minutes ago, Gripless said:

    I’m guessing NZTA not VTNZ 

    https://www.nzta.govt.nz/contact-us

     

    you could also try to get the old owner to do a personalised plate transfer form if you can find out who registered it. 

     

     

    haha yeah sorry... NZTA... Sorry getting them confused.. Been dealing with both quite a bit lately trying to reregister an old motorcycle and get approval to reuse the black plates on it..

     

    Safe Horsepower Limit on stock 5 speed?

    in General Vehicle Discussion

    Posted

    On 11/10/2020 at 3:55 PM, RedSVX95 said:

    Hi All,

     

    My stock auto on my 1995 SVX is having TCU and torque control/converter issues and looking at swapping out with a 5 or 6 speed manual. SVX is rated at 230hp so would a stock WRX 5 or 6 speed be ok? Any thoughts?

     

    Cheers!

     

    John 

    The torque would be the biggest killer for you.. 

    It's really an unknown as to it lasting or not..

     

     

    Electronic boost controller or G4+ and tune?

    in General Vehicle Discussion

    Posted

    My 2 cents...

     

    If you're wanting 300hp (225kw) atw.. You will need to do a lot more than chuck an STI ECU, boost increase and some yellow injectors at it..

     

    You are talking 

    bigger turbo

    Exhaust

    injectors

    intercooler

    ECU

    uprated fuel pump

    FPR

    possibly forged pistons

    Dyno tune

    I would say your standard clutch would not like that sort of power so upgrade that too.

     

    If your wanting power around the 300hp ATW mark then you really are heading into spending larger amounts of cash on an older WRX.

     

    Im not saying dont do it but what i am saying is to think very carefully about your power goals. costs can spiral out of control very quickly. 

     

     

    • Like 3

    Upper cylinder cleaner worries.

    in Impreza, Crosstrek and XV

    Posted

     Nick89 said:
    Just ran some through. Not a lick of difference! And no smoke whatsoever either! Was a bit disappointing actually haha. And yes, I did spray it in the right place. I guess since my car sees almost entirely motorway running, there isn't much of a chance for carbon and other gunk to build up like in city driving.

    if your mostly nice hot motorway driving you wont build up carbon..

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