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boost problem
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Old 27 Aug 2008, 07:52 PM   #1 (permalink)
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Unhappy boost problem

hey there, can anyone help as this is my first wrx and i know pretty much nothing about them,
when i put the foot down the car pulls great till just over 4000 rpm then there's a sharp loss of power this happens in all the gears i think, def. 2nd, 3rd and 4th.
i have a bailey dump valve, a k&n style induction kit and a manual boost controller fitted which i have turned right down incase who ever fitted it had it too high.
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Old 27 Aug 2008, 08:17 PM   #2 (permalink)
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Re: boost problem

i dont know too much about these as i only got mine just over a week ago, but could it be a split intercooler hose
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Old 28 Aug 2008, 05:26 AM   #3 (permalink)
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Re: boost problem

i'll take a look at the intercooler hose, and i forgot to mention it's a 93' K wrx 225 jap import and it's the engine with the coil packs on the side not on top, if that helps.
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Old 28 Aug 2008, 02:25 PM   #4 (permalink)
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Re: boost problem

hi mate this is the same car as mine after youve check the obvious intercooler hose check the boost solenoid on drivers side of engine bay should be ticking (tic tick tick ) when car is ideling also you should put the standard air box back on as they dont agree with uprated air filters unless your running around around 280 bhp also will need to know what boost controller it is give me a call if you want to talk through things 07525625506 im jon
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Old 28 Aug 2008, 04:58 PM   #5 (permalink)
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Re: boost problem

Quote:
Originally Posted by jongriff1066 View Post
hi mate this is the same car as mine after youve check the obvious intercooler hose check the boost solenoid on drivers side of engine bay should be ticking (tic tick tick ) when car is ideling also you should put the standard air box back on as they dont agree with uprated air filters unless your running around around 280 bhp also will need to know what boost controller it is give me a call if you want to talk through things 07525625506 im jon
hey, thanks for the reply, i'll check the things you said tomorrow because i'm night shift, as for the boost controller it was already on the car when i got it don't know what make or kind it is, it looks like the Rtech kind on ebay a kind of cross shape with the twisty knob on top.
thanks, chris.
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Old 31 Aug 2008, 01:29 AM   #6 (permalink)
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Re: boost problem

the intercooler pipes seem to be ok, the boost solinoid is ticking away, the standard air box is back on and it's still loosing power just over 4000rpm. i also changed the fuel filter today when i done the oil and oil filter, not that the oil is the problem, she's running sweet, just not over 4000 rpm.
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Old 31 Aug 2008, 07:40 AM   #7 (permalink)
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Re: boost problem

Did you clean the "boost solenoid" ?


Link.1 could it be a turbo problem?


Link. 2 scooby pulls back over 4000rpm
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Old 01 Sep 2008, 05:58 PM   #8 (permalink)
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Re: boost problem

i'm going to try a new maf sensor i've been told it may be that,
got one on ebay for 20 it's from a legacy but it looks the same and it has the the green sticker as does mine, if it doesn't work i'll just stick it back on ebay i thought it was quite cheep coz other sellers have them for 50-60 second hand.
fingers crossed this will solve the problem.
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Old 01 Sep 2008, 09:25 PM   #9 (permalink)
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Re: boost problem

just watch m8, if it turns out to cure the problem i would be inclined to go and buy a new maf as its probably the most critical sensor of the engine which will ruin the engine should it fail.

I still cant believe that subaru dont have a better fault recognition system with their ecu's when it comes to this sensor but all you need to do is have a read through some of the threads on the site to read about the devastating consequences.
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