OK..
- Valve cover gasket replaced
- Turbo disassembled, checked end play and wobble: Felt perfect
- Cleaned Turbo completely - including the VNT section Now it moves like butter. no bent vanes, no sloppiness where the actuator arm moves the ring..
- New Downpipe gasket, oil drain gasket, EGR Cooler gaskets
- New hardware (studs, nuts, etc)
- Checked/cleaned MAF and MAP
- Checked/cleaned intercooler pipes
- Removed, cleaned and reinstalled intake manifold, including new gasket
- WGA tested; holds vacuum as tested
- Vacuum canister under turbo holds vacuum as tested
Reassembled everything, took it for a drive. Stayed in town, driving around, seemed fine. Spent about 30-40 mins doing this..
Decided now's the time, let's hop on the bypass and get some speed...
Turned onto the on-ramp, accelerated to about 35-40,
BEEEEP.. Limp mode.
Went to next exit and pulled over, whipped out the VCDS. P0299.. Requested: 2364mb, 1754.4mb actual.
N75 has been replaced
EGR was cleaned
All vacuum lines replaced
Vacuum check valve replaced
Air Filter replaced
I'm out of guesses, at this point.. Short of buying an EGR blockoff ant 'testing' to see if the EGR is not seating properly, I don't know what else to do..
PLEASE, throw me some ideas, if you have any more.. I'm at my wits end with this car now.
Thanks.