Legacy_GT

I'm in Upper Hutt

Wish i could but I've sold it

Hi there, Having problems with the secondary turbo change over and return. The secondary is trying to come on too early (about 3800 rpm), this isn't too much of a problem except when it tries to drop back to just the primary i have to wait for the exhaust note to change or there is heaps of lag when accelerating. I've had the secondary turbo replaced (along with the ECV), cleaned out all the pipes and solenoids in the black box with carb cleaner and also replaced the up pipe from the secondary but still no change. I had the same problem when i first got the car about 6 years ago, i then installed a Zerosports sequential controller and the problem went away. Now I've taken the controller out and the problem has come back . Would appreciate it if anyone could help. Cheers

Check behind primary turbo (exhaust housing and up-pipe). Also check leaky exhaust manifold.

Thanks man, its worth a shot. Pm'n you.

Sorry for the late reply been busy as. Have had it looked at by subaru in lower hutt a couple of years ago when they were around and they were useless. Never fixed any of the problems and tryed to say i was running it on the wrong gas, but was always run it on 98, wasted around $500 there. Also taken it to Speedtech, they told me there was nothing wrong with it and there was a slight miss. Cost me $170 and a free chocolate bar...$170 chocolate bar!. Also taken it to Mendoza Mechanical, they didnt know what was wrong with it and replaced the 02 sensor, they were trying to say it was throwing that code but it wasnt so i ended it there before they started replacing part by part, cost $400 there. Just hoping someone from these forums could help me fix the problem, i dont mind paying them as long as they can diagnose the problem. Any help would be much appreciated!

Ive already replaced the plastic intake pipe since ive owned it, looks good from the top but ill take it off tomorrow and check the underneath and around the ends. The sharp jolt randomly happens under light and heavy accelleration and its like a complete loss of power, a bit like boost cut but regains power straight away. The coil pack that was replaced was cracked and chipped..dont think they have been tested yet. The BOV is aftermarket and has been tested for leaks. Could a faulty knock sensor cause the jolts?...im thinking it could be causing the low boost and increase in fuel usage but mabey both problems?

Im in Welly

It was running fine when i put the Prova ecu in, however i had a bit of an incident on the motorway. Ran over some sort of metal pole with a piece of metal sticking up out of it, which broke a weld just after the downpipe and tore my resonator. Have had it all fixed but it sounds like theres a small leak coming from somewhere, but can only hear it when parked or driving near a wall or fence. Was told it was normal and theres no leak but im not too sure. Since that incident happened the car has started to have problems, not sure if it was a coincidence or not. However ive had the car for about 4 years and it would run good then the boost would drop back to 7psi for a while, then would run good again. Its been very annoying .

Not sure how to tell what the TPS is set at but the car usually idels normally (around 800rpm). Every now and again the car just about stalls when its cold though.

Yeah all blue sticker ones, made sure they have the same numbers

Hi all, I have a 94 Twin Turbo Legacy which is running rough and has low boost (about 7psi). Its very hesitant and feels really laggy when under boost. Have reset the ecu (running a Prova ecu) and it will run good for a couple of minutes but has a sharp jolt every now and again, then it will drop back to the usual. Also the engine note will change sometimes when i change gear and have to wait a couple of seconds for it to sound normal or theres lots of lag. Have tryed running it on 98 but it makes no difference. Have taken it to 3 different garages and they cant seem to find the problem. I have tryed so many different things but im running out of ideas now as to why its running crap, its also throwing no codes. Heres a list of things ive had checked/replaced. Tryed another ECU Changed AFM (tryed 3 different ones) New O2 Sensor Checked all vacuum lines. Checked all hoses Changed differential pressure sensor Coil packs checked (1 replaced) Plugs checked (fairly new anyway) Primary turbo removed and checked (wastegate replaced on it) Any help would be much appreciated, ive spent too much money on it and not geting anywhere . Just want this thing to run mint again!