Stg 3 Problem: Boost problem at full acceleration:
 

<center><img src="http://pictureposter.audiworld.com/19251/pics1_054.jpg"></center><p>As it says at WOT, (according to the boost gauge) I peak at around 21, then bounce back and forth to about 15, then back again, then it settles somewhere in the middle.
Any ideas? I recently got a VAG, but not really sure what to look for, so please dont say get a VAG, please tell me how to use it! (and which blocks to monitor perhaps with the values I am supposed to have..)

Thanks,

Mark
Pic for views!

BPV being blown open?
 

You could log block 002 for load and MAF readings .. both at idle and then a WOT run in 3rd from ~2500 to redline.
Maybe also look at logging block 020 for timing correction / cylinder ... seperately so you get good data points.

Re: BPV being blown open?
 

What numbers should I be close to with these blocks?

Any other way to check my BPV? Its a GFB adjustable --Could t be adjusted improperly? Would having it tightened too much be a problem?

I don't know jack about the GFB. I would imagine you can have it misadjusted tho. I would also think
 

it possible to have it too tight as well.

The MAF readings on block 002 should be around 220+ gps at WOT in the upper rpms on your pull

Timing correction shouldn't be over a handful of degrees in any cylinder.

Post your logs here and folks far more schooled than you or I will be able to comment.

I am having the same problem...
 

I logged 02, 031, 32. I replaced the MAF, and n75 and those problems kind of went away, but now I am running rich, I guess to a hose leak. Stay in touch I'm going to a shop on Saturday, and I'll know what the issue is then. Maybe it is the same for you. I've seen a lot of the same problems happening lately with Stage 3 that people are posting the same issue. Let me know and I'll let you know what happens. (try pressure testing your air system, search for AWE pressure testing).

friend had the same problem it was his plugs. how old are yours?

Good question, Ive had the car since May...
 

I guess I will go and find BTCC A4!

Oh it is his car.
 

Has the intake been squared away?

Re: Oh it is his car.
 

Care to explain any more?
I dont really understand what you mean, I'll try searching...

He had a pretty kludged up intake on that car
 

and it didn't perform very well. I don't think it was abused or anything but the intake was pretty poor. It had a tiny filter down next to the turbo .. looked pretty much like a hot air intake to me.
So if the intake hasn't been squared away I'd start there.

if you havent changed the plugs since may i would just change them. most people change everyother
 

oil change. make sure they are gapped around .30" as well as APR has had some issues with their spark plug gap recommendations as of late.

The intake is the stock airbox...
 

It might have been changed from when you saw it last, but has been this way since I have had it.

The only change to it is the hole in the front I use with a cut-out headlight (track only)

Which plugs are reccomended?
 

I think these were IK22's? Something like that anyways...

IK 22's tend to start misfiring after ~7000 miles. The longest lasting / best firing plugs I've
 

found are the NGK PFR7B's .. pricey but a very good plug. Also, you'll want the gap to be ~.028"

any updates on the situation?

Re: IK 22's tend to start misfiring after ~7000 miles. The longest lasting / best firing plugs I've
 

I would suggest that after you have changed the plugs, you test the wastegate diaphragm. I presume there is a description of how to check it somewhere around here.

I logged 002 and posted it, but noone replied, and i have no idea
 

what to look for.......(probably 1 page up!)