Limp mode why????

[calistyle]

my 1.8T keeps on going to limp mode. any of you guys familiar with this problem?
the car has an APR 91 octane program that I run with daily. just recently the car would go into limp "5 psi" during some spirited driving. I have tried resetting the car's comp by unpluging the battery, but problem still persists..HELP!!!!!:( :( :(

[Tom (aka Godzilla)]

Boost leak, check your hoses.

[NaKoRuRu]

How much are you boosting?!? If your overboosting it'll throw you into limp get the overboost solution to get rid of it.

[calistyle]

I'll check my hoses tomorrow. any one in particular that I should pay special attention to?
and what is that overboost solution and where do I get it. With the 91 octane, I'm boosting only 15 psi.

[NaKoRuRu]

Check this thread out...
http://forums.vwvortex.com/zerothread?id=1294076
and the link for the overboost is...
http://www.boostvalve.com/

You should be holding more than 15 with APR91... What do you spike at?!? 20-21 is what I spike and hold about 18-19 and tapers down to about 16 at redline...

[NaKoRuRu]

More good links...
http://www.izvw.com/overboost.html
http://www.boostvalve.com/1.8info.html