Bugeye1989

Hi guys I have been noticing a problem with boosting on my wrx it's running a td04 std and it just doesn't seem.to be boosting much at all and the car get very hot when trying to.boost yet the temperature on the engine is completely normal.
I have been researching it and some say it could be a blocked up pipe do you think this could be the reason

Peedee

iTrader: (4)

Could be any number of things mate. Boost solenoid, MAF, split vacuum hose etc. Check all your vacuum hoses first as it doesn't cost anything. It only takes a small pin-***** and you'll loose boost.

TECHNOPUG

iTrader: (1)

The hose that goes from the solenoid to the air intake goes very brittle over time and can snap. So be wary when examining hoses.

Bugeye1989

Thanks guys when I finish work I will investigate

Bugeye1989

It just seems the car is roasting hot so much that if I wind my window down I can feel the heat coming off of it yet the temperature gauge is fine

Peedee

iTrader: (4)

They do run relatively hot as standard. If the temp gauge is showing it's ok, then I'd go with that. When you've been driving and stop, you can see the heat coming out from the scoop, that's normal

Bugeye1989

Ok well was just checking because of the turbo can't push past the up pipe cat it will create a lot of pressure which will make the turbo not boost as much and make the exhaust side very hot that was my only reasoning behind it because it's logical in my head lol. Plus I heard it's a common thing on bugeye too have blockages in the up pipe cat

Bugeye1989

Right all vacuum hoses are good and boost solenoid is nice and clean but I have stood behind it and let someone give it a good rev and it sounds dead silent considering it has a racking great big exhaust it's silent

Bugeye1989

ok so maybe I solved it the car was failing to start this morning and after a lot of tinkering I unplugged the maf and it starts and runs fine a little lumpy but still running does that sound right

Peedee

iTrader: (4)

In regards to 'failing to start', was it turning over or completely dead?

Bugeye1989

right think I sussed it pulled everything off her and realised the main intake pipe bolting onto the turbo was ripped as it joined the turbo . Replaced today with a new one but when I even slightly cover when i say slightly I mean maybe 25% of the intake with my hand it stalls.
Now I have had 2 other impreza before and they normally suck your hand over the intake but this is just lame

Bugeye1989

I seriously am thinking that because the cat is blocked it can't blow out so it can't suck in

Bugeye1989

Ok so changed all the turbo intake
Changed the maf for official new denso one
Changed the up pipe for a decat
Changed the spark plugs
Plugged car in to official Subaru fault reader laptop and car is reading no faults. Yet the car has no boost and is juddering violently when accelerating yet no boost help please

stamina_daddy

iTrader: (3)

Do you live anywhere near high Wycombe?
fb tuning is there and a subaru specialist.
other than that have you checked the turbo?
have you taken it off the car?

stamina_daddy

iTrader: (3)

Could the turbo be seized or just not working?
td04 are only 50 quid.

Bugeye1989

Turbo is actually the most well kept td04 I have seen and is in perfect working order it's a brain teaser

ossett2k2

iTrader: (9)

Did you reset the ecu after replacing the maf?
Have you checked the intercooler Ypipe for splits?

stamina_daddy

iTrader: (3)

Blocked or collapsed downpipe cat?
can you get hold of a de cat downpipe?

stamina_daddy

iTrader: (3)

If it is blocked downpipe and you fit a de cat one, you will have to get it remapped, unless you can find a 2nd hand standard one to put on.

Bugeye1989

Right downpipe cat is in very good working order and the y pipe on the back of the intercooler is brand new and not leaking I have put it in a garage today if they come up with a solution I will let you all know what the revelation is lol

Bugeye1989

Update garage have said that my turbo is blowing the spark out from my spark plugs apparently all I have to do is change them well I hope it works I am changing them tonight

stamina_daddy

iTrader: (3)

Really?

stamina_daddy

iTrader: (3)

You said you already changed spark plugs?
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Bugeye1989

Changed for heat 7 plugs made no difference car was still ****ed so changed all the vacuum hoses this evening just to be sure no change. But I accidentally knocked the cable on the maf sensor out the back and it changed its tune .

Cut the maf cable and 're soldered it now we have maximum boost bloody hell all that for a ****ed cable 👹👹👹👹👹