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Yeah here we go, Turbo underboost. Still go'es into limp mode, 2003 jetta tdi wagon. Iv'e done most everything else. All vac lines, Cleaned turbo vanes. new intercooler, new actuater, Wind's up nice but still underboost. Seem's overboost is a lot easier to fix.Will deleting the EGR help Thanks.

I've been having an underboost or no boost issue for ages.Still having a leak somewhere. Where can I buy decent tubing? Please help. 2003 wagon :confused::confused:

Hello all, I've done all the research i can. Used to get under boost code. so cleaned out the turbo, changed all the vac lines. Finally got boost. Then only a glow plug code so fixed it. Here's the problem. After any aggresive acceleration i lose boost so i shunt into neutral turn ignition off...