Low boost

[a87]

I've been having a boost problem ever since the car has been chipped, it will only spike and hold ~8-10 psi. I finally thought I had it figured out when I unplugged the MAF, it was boosting ~20-21 psi. Before the maf I scanned the car w/ vag-com several times (no codes), changed DV, did the boost leak test and everything seemed fine, and then I got a new MAF. With the new MAF plugged in again the boost issue is back. I have no idea what else to check for, no codes, no leaks, just unplugging the MAF makes the car boost right and as soon as I plug it back in the boost is low again. Any help is appreciated.

[flynnr]

what brand did you go with?

[a87]

Speedtuning

[lawnferie]

what gear boosts 10psi? i think 4th and 5th get into 15psi range...

[geeky]

i thought the SpeedTuning Stg2 was suppose to peak at 21psi in 5th

[SykoraA4]

it does, it sounds like your in limp mode. maybe its not the maf itself, could the wires to the maf be messed up, somehow triggering bad readings

[lawnferie]

lol didnt know stg2...