I have been watching my datalogs and boost gauge numbers. I start to make boost around 35 with 3500-4000 rpm's. I noticed i get to 35 very fast and then the times from 40-60 take the longest. I assumed the added boost would make it the other way around. What could be the problem or has anyone had this and solved it? Is there a way to see if the car is running lean or sensors that might show my problem?

 

Your datalogs should show what the sensors are doing. Your problem might be gearing since the 1-2 rpm drop is kind of big in our cars and that is where you are saying you are slow. More likely you could also have a bunch of timing retard happening, and you might also be running out of fuel. hard for me to say.

What are the stock O2 sensors at and what about the injector pulsewidths? Do you have FMU or bigger injectors? Can you check your fuel pressure some kind of way?

 

Here are my rmp's and speed right before the shift to 2nd and to 60 mph.
5325 38
4925 40
4175 49 i just shifted and the tires are spinning making the mph higher.
4025 51
3775 46
3600 45
3600 46
3600 47 3rd 3600 rpm in a row.
3675 47
3750 48
3850 49
3900 50
3925 51
4025 52
4000 53 rpm's go down here slightly.
4150 54
4175 55
4200 56
4225 56
4375 57
4325 58 rpm's drop again.
4400 59
4450 60
What is the typical rpm drop for an A4 on the 1st to 2nd gear change?

 

I doubt that's really happening. I see that kind of thing on my logs too. Probably just an anomoly of the data collection. You could plot it in Excel and throw out the goofy points or use line smoothing to see what it really looks like. I will admit the 3600 3 times in a row is weird.

The gear ratios are 1st 3.06, 2nd 1.75, 3rd 1.00, 4th 0.70. so you can figure out how much it will drop from gear to gear.

 

Looking at it again i noticed the rpm's where it is at 3600 is the lowest ones and then it goes back up again. I need to figure some way of getting more power right around this point. Maybe it goin lean or something.

 

What size fuel lines are you running?

 

Fuel lines are stock. I don't think thats my problem. Its almost as though the car doesn't do anything extra with the boost its getting. I ran it with the belt off and its feels the same.

 

I would try to measure the a/f with a wideband. Everyone here would just be guessing at your problem.