Fueling Question(s)...

[05GLI]

Alright, I'm going to play it safe and post these questions here.  Anyway...

I have an Upsolute chip and a MBC (from boostvalve.com).  I had the MBC set to about 15-17 psi (somewhere in that range).  However, the car runs lean as hell up until about 4800 RPMs, then it starts to run richer because the boost starts to go down; I hit about 13-14 psi at my peak HP (don't know if that's normal).  Tried unplugging the MAF, and it ran a little bit richer, but not much (started going fine around 4400-4500 RPMs instead).  My questions are:
1.)  Any idea what is wrong?  My guess is the Upsolute software...
2.)  Are there any fixes that wouldn't require me to do one (or both) of the following:
3.)  Do I need to upgrade to a bigger FPR (like 3 or 4 bar)?
AND/OR
4.)  Do I need to upgrade to bigger injectors (hopefully not)?

[slickfisher]

If you have Upsolute performance software why so you need an MBC. Just to make your life more complicated?
That is what computerized performance software is made to do- keep your boost/timing advance/A/F ratio/ and rpms at safe levels multiple times per second.

Why would one buy Upsolute or any other brand performance software if their going to manually set their boost levels with another controller?

My software controls my boost beautifully. My plugs look perfect. I have no drivability symptoms. And I get all the boost my little K03-058 can make.

My solution is to do less, not more. Use your Upsolute software. Remove the bling crap-MBC, forget about bigger injectors and quit trashing your brand new 05 Jetta man. If you still have a problem after your just on Upsolute tunning- make them fix it. I personally suggest APR or one of the big 3 PCM programmers for gas cars. For TDI's I would take a look at Upsolute.

[Dizzy]

What boost levels do you see without the MBC?  And how do you know the A/F ratios?

[05GLI]

What boost levels do you see without the MBC?  And how do you know the A/F ratios?

Without MBC, I saw 20 psi max at about 3250 RPM and about 11.5 PSI at my peak HP rating (which is like 6150 RPM).
Tailpipe sniffer...I know it's not 100% reliable but it's better than nothing.  At the 20 PSI spike, my A/f was like 15-16:1.  At the 11.5 PSI spike, A/F was at like 10-11:1.

If you have Upsolute performance software why so you need an MBC. Just to make your life more complicated?

How is it "performance software" if I'm only making 163 whp with intake, n75, and pulleys.  I've seen people with those mods and a different chip tuner make close to 200 whp.  Yeah, I realize I made a mistake with Upsolute (by the way, they wanted to charge me $150 extra for a "custom tune" because of my motor's setup), but I don't have the money now to get a different chip.  Obviously, if that was what I was going to do, then I wouldn't have posted this.  Sorry my s/n makes me seem like I lack common sense...

Why would one buy Upsolute or any other brand performance software if their going to manually set their boost levels with another controller?

I did not buy the software with the intent on using an MBC, I assumed that Upsolute software was decent enough that it would raise boost in higher RPMs (and obviously, it does not).  I decided to get an MBC to control the crazy 20 PSI spike as well as provide me with some more top end (which Upsolute could not do, atleast not for me).

[Dizzy]

K03 has no top end no matter how much boost you run.

[05GLI]

Yeah...I know about the limits of the k03.  But I also know what it is capable of.  And I'm not having turbo issues, I'm having (surprise, surprise) fueling issues.  So, does anyone have any information/advice that actually relates to the questions I asked inthe beginning?

[Dizzy]

A/F on the top end is going to be rich, it's the ECU dumping fuel to keep EGT's down since the K03 is way past it's efficiency at that point.  I really think you're overanalyzing everything.

[05GLI]

And it's running lean  to keep the EGT's down as well?  

Look, it doesn't really bother me that it is running rich.  If it did, I wouldn't ask if I needed a bigger fpr or bigger injectors, I would ask if I needed smaller ones.  But, the problem is, I'm running lean; so lean, in fact, that my 2005 Jetta with only 8000 miles (and roughly 5000 of those miles with the chip) already has white-tipped spark plugs.

[kilmer420]

where did you get the UP SW?
unplug the maf and run it that way to get more fuel for now
be careful as if you keep running lean you will blow your motor, only a matter o time

give us some more info so that we can help...

[05GLI]

This guy (Dave) in Orlando, FL installed the Upsolute software on my car.
Originally, I had talked to someone on the Upsolute web site, and gave them my modifications list (CAI, DV, n75h, and power pulleys).  They said that they did not have an updated file for my car, and that they would have to make a "custom" file (which would be an extra $150 since I had already purchased a normal file) because of the modifications I had done to my car.  But, I had been putting down roughly the same HP numbers, as well as A/F ratio, before I had installed some of the modifications.
I have the MAF unplugged for right now, but it still does not help any at lower RPMs.  When I had dynoed my car with the MAF unplugged (after dynoing it with it plugged in), the A/F ratio started to get richer a little sooner, but still not soon enough (about 4500 RPMs, as apposed to about 5000 RPMs with MAF plugged in).
Right now, I don't have any timing logs (don't have the equipment right now to use VAG-COM).  But might be able to use someone else's this weekend.
Here is a snap shot of one of my dyno runs before I had installed the MBC:

I couldn't get any pics of my dyno graphs with the MBC installed, but, with the setting it was at, it was making about the same boost and HP numbers (had like 5 or 6 threads showing on MBC).  Also, we didn't turn up the boost any.

Not sure if I'm missing any other information to help you guys be able to help me out, but if I am, just let me know...

[enginerd]

What do your block 32 fuel trims look like? Bad O2 sensor perhaps.

 I wouldn't worry about exact dyno numbers, they all differ. Unless someone with a 1.8T dyno'd right after/before you and laid down 200 whp on the same dyno.

you are definitely lean down low, and too rich up top. unless one of the many sensors is bad, you have few options but to play with lemmiwinks/FPR, or just get new software.

[05GLI]

What can cause an O2 sensor to go bad, especially one so new?  Anyway, hopefully, I will be able to use VAG-COM with my friend's girlfriend's laptop...Have to wait and see.

[kilmer420]

What can cause an O2 sensor to go bad, especially one so new?  Anyway, hopefully, I will be able to use VAG-COM with my friend's girlfriend's laptop...Have to wait and see.

02 sensors go bad because of running rich due to too much unburnt fuel
and because of soot build up...

the front 02 sensor is like 54 bux

[05GLI]

What can cause an O2 sensor to go bad, especially one so new?  Anyway, hopefully, I will be able to use VAG-COM with my friend's girlfriend's laptop...Have to wait and see.

02 sensors go bad because of running rich due to too much unburnt fuel
and because of soot build up...

the front 02 sensor is like 54 bux

Does that seem like a possible scenario with my car seeing as how it runs lean thorughtout most of the RPM range, and that it is a newer car (2005)?

[kilmer420]

dunno if it's a SW issue or not...

usually if the 02 goes bad you tend to run rich not lean because the ECU will overcompensate for poor readings...but you never know...

did this do this right after you got your SW?
or you had your SW for a while and then it just started doing this randomly?

why don't you contact your UP dealer and talk to them and see if they can reflash you again or solder another chip whatever they did...and see if that helps