Replaced both O rings, driver and passenger side, on the intercooler pipes. Drivers side had loaaaads of oil all around it and a large splodge on the under engine tray. Obviously been leaking for some time.
Thought I potentially had a boost leak as it did feel a bit laggy and I could hear a fairly noticeable hiss on WOT.
Hiss is slightly still there but much reduced in volume (is this normal turbo noise, or should it be totally silent and I have another leak somewhere?).
So much more responsive and boost feels like it comes in much earlier.
Should be no hiss sound...spool sound=good! Was the groove cleaned well before the new seal was inserted? May want to have another look at it just to ensure that all went well with the reconnecting. Did you only replace the hose to fmic seals...or did you also do the hose to inlet and outlet pipes to and from the fmic? There are five seals...three on the turbo to fmic inlet hoses and two on the fmic to throttle body pipe hoses.
Replaced both O rings, driver and passenger side, on the intercooler pipes. Drivers side had loaaaads of oil all around it and a large splodge on the under engine tray. Obviously been leaking for some time.
Thought I potentially had a boost leak as it did feel a bit laggy and I could hear a fairly noticeable hiss on WOT.
Hiss is slightly still there but much reduced in volume (is this normal turbo noise, or should it be totally silent and I have another leak somewhere?).
So much more responsive and boost feels like it comes in much earlier.
Should be no hiss sound...spool sound=good! Was the groove cleaned well before the new seal was inserted? May want to have another look at it just to ensure that all went well with the reconnecting. Did you only replace the hose to fmic seals...or did you also do the hose to inlet and outlet pipes to and from the fmic? There are five seals...three on the turbo to fmic inlet hoses and two on the fmic to throttle body pipe hoses.
I’m not sure if it’s hiss or spoil sound... maybe a very slight hiss, much better than it was. There is probably a small leak somewhere still, but it’s much improved now.
I literally only replaced the two seals (driver and passenger side) that connect directly to the FMIC, the two in the front bumper. All was cleaned as well as possible. The other seals looked very dry, so assumed no issues but might be worth doing in time.
I have my reservations on the plastic MAP sensor pipe too, I’m sure this is splitting open on the joints, but hard to tell. Might just be the way it’s constructed.
