OKAY new MAF is in, my problems are SOLVED>>>
 

So yea I got an OEM refurbished MAF for an AMU motor from ECS tuning. My prior MAF was still pulling 100% according to VAG-COM but it was a VW 2.0 MAF that I had for a year. What happened was I bought a MS stg2 mofo and slapped it on, since then my car was hesitating when boost kicked in (high revs) along with the boost gauge not holding any specific number *needle would shake*...

So lets recap.

Problem: Major hesitations after getting a MOFO - even considered getting rid of GIAC for the 1,000th time.
Solution: Bought correct MAF and my life is perfect.

HALLAUAH!

I know we have all seen this before, but it's nice to search and find this one day for someone maybe? lol

"Using the wrong part can cause issues"...Is that what we learned here? :)

I've been preaching that regarding MAFs for some time now, but few actually listen
 

it seems to be a common belief that it's perfectly fine to use the VW 2.0 MAF element.

I've had a VW 2.0 MAF for three years w/k04, etc. - no prob.

can you post the 2.0 maf part number on the sensor? also when you said hesitation, was there surges
 

when you step on the paddle? if you have an open intake filter, you can actually hear this, is this what happened to you along with the neddle shaking and you can't hold on to boost consistently?

I wish I had a video of what was going on, I will grab the part number in a little bit, its cold out

grab you cam fone and record the sound...it's doable. i'm serious :) and post part # whenever thanks

I still have some hesitations. I think it might be adapting. I will take a video>>>
 

video tonight when I goto take my girlfriend home.

Also I'm going to get another set of Denso's tomorrow or bosch platinum 4's

currently I have my desnso's gapped to .032. I think this might be causing problems as well. I don't know if anybody knows if I can regapp them but I just might do it tonight