Thanks in advance for any help...
I just got my A4 back after about 2 weeks. I took it to the dealer because I thought the ECU was dead, however I ended up taking it to an APR dealer where they reflashed it and it was fine.
Anyway, I had a whole bunch of vacuum leaks from when I installed my APR TIP. Last night I spent a few hours making sure there were no lines unclamped. Everything is clamped down and although I haven't done the valve stem pressure tester yet I can't imagine how there could be a leak.
So I take the car out this morning and get on it a bit... It was making a screaming noise and hitting 20psi very very quick.
I got on it again and realized there was no diverter valve sound ... there was only, almost like a pop sound.
Just for reference I've got the yellow spring in the Forge 007 DV.
I decided that the DV wasn't working right so I installed the 2 pressure plates that came with it. One on the top of the spring and one on the bottom. Is that correct or no?
I also re-ran the tube from the DV to the FMIC outlet.. I used strong tube that didn't kink so there's no back pressure there.
So after I do that, I take it out for a drive and now I'm only hitting 14psi and losing boost quick and I'm still hearing the screaming which increases with boost (starts at about 7 psi)
It doesn't sound like a dentist drill at all.. it sounds like screaming. I've searched through YouTube videos and I can't find one that makes the same sound.
Also.. when I just rev the car it sounds perfect... you hear the turbo spool and the DV blow-off... but when I get on it I get low boost and a screaming sound with no DV sound other than maybe a flutter sometimes
Modified by phantomstudios at 9:42 PM 8-6-2008
I just got my A4 back after about 2 weeks. I took it to the dealer because I thought the ECU was dead, however I ended up taking it to an APR dealer where they reflashed it and it was fine.
Anyway, I had a whole bunch of vacuum leaks from when I installed my APR TIP. Last night I spent a few hours making sure there were no lines unclamped. Everything is clamped down and although I haven't done the valve stem pressure tester yet I can't imagine how there could be a leak.
So I take the car out this morning and get on it a bit... It was making a screaming noise and hitting 20psi very very quick.
I got on it again and realized there was no diverter valve sound ... there was only, almost like a pop sound.
Just for reference I've got the yellow spring in the Forge 007 DV.
I decided that the DV wasn't working right so I installed the 2 pressure plates that came with it. One on the top of the spring and one on the bottom. Is that correct or no?
I also re-ran the tube from the DV to the FMIC outlet.. I used strong tube that didn't kink so there's no back pressure there.
So after I do that, I take it out for a drive and now I'm only hitting 14psi and losing boost quick and I'm still hearing the screaming which increases with boost (starts at about 7 psi)
It doesn't sound like a dentist drill at all.. it sounds like screaming. I've searched through YouTube videos and I can't find one that makes the same sound.
Also.. when I just rev the car it sounds perfect... you hear the turbo spool and the DV blow-off... but when I get on it I get low boost and a screaming sound with no DV sound other than maybe a flutter sometimes
Modified by phantomstudios at 9:42 PM 8-6-2008
