hallo

anny idea aboyt the knock, I change fuel filter, sparkplugs.

 

It's not from the exhaust is it? Sounds like back fire on the video. Has it got the correct HT leads on it? High modifications sometimes means you need to upgrade them. 

Could be the exhaust knocking in the tunnel. Hold the tail pipe and give it a good old shake side to side. See if you can replicate the knock. If you have access to ramps it will be easier to see.

pfr7b ngk spark plugs, and it´s not tunede.

only 3" downpipe with no cat.

and the backbox (prodrive )

 

id try and see if it's a misfire. Seems to be two pops with every gear. 

Not tuned but a decat downpipe? And rest of the exhaust. That's tuned. No cat in the downpipe could cause you issues in future if you don't have it mapped. Could get overboost and fuel cut.

Have you run a diagnostic check at all ? Could be running round changing parts for no reason

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i have a obs2 diagnostic tool, but i don´t work on my car??? is it only obd1???

what i´m meen it´s not overboosting only stock 0,9 bar

i the future i´m look at this exhaust:

http://www.ebay.co.uk/itm/SC31a-Cobra-Subaru-Impreza-WRX-STI-93-00-Track-Turbo-Back-Exhaust-Sports-Cat-/282285580767?hash=item41b98821df:g:HcMAAOSwlV9WRH8k

 

You need to look under the steering column there's two small black connectors underneath, clip them together turn ignition to 2nd position and see if the check engine light 'blinks' out a code,

If no codes stored it will just flash constantly, of there's one stored it will Flash intermittently

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thanks, no codes stored.

Have you got a vent to air dump valve

Forget that, just watched vid and didn't hear one 😳

that I usually have, but changed it to a normal. ( forge )