Lean problem - here are the numbers (and graph)
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Lean problem - here are the numbers (and graph)
Let me know what you think. I would really like to see the numbers from someone with a GIAC K04 chip or APR Stage 3 (with Brett posting the factor for the MAF resistor they use) to compare things. For reference, this chip only turns about 13.5 lbs at WOT and drifts off to 12lbs at higher RPMs. Please pay particular attention to the MAF readings. I would like to know what this turbo is doing in comparison to a stock K04.
<img src="http://pictureposter.audiworld.com/1009/log_graph.jpg">
<img src="http://pictureposter.audiworld.com/1009/log_data.jpg">
Thanks in advance for the responses,
Mike O.
<img src="http://pictureposter.audiworld.com/1009/log_graph.jpg">
<img src="http://pictureposter.audiworld.com/1009/log_data.jpg">
Thanks in advance for the responses,
Mike O.
AudiWorld Super User
Joined: Mar 2000
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Good god those first 3 data points are scary...been a while since I've looked at the O2
graphs but that's kinda lean isn't it?
Regards,
James R.
2001 A4 1.8TQMSXP (Koni Coil-Overs (next week), Neuspeed 19mm Rear Anti-Sway, StopTech A4 Brake System, SS Brake Lines, Pagid Performance Friction (soon), Oettinger Pedal Set + Dead, Oettinger RE's 17x8, Yoko AVS Sports 225/45/R17, European Xenon Housings, Bailey BPV & RS4 Grill)
Regards,
James R.
2001 A4 1.8TQMSXP (Koni Coil-Overs (next week), Neuspeed 19mm Rear Anti-Sway, StopTech A4 Brake System, SS Brake Lines, Pagid Performance Friction (soon), Oettinger Pedal Set + Dead, Oettinger RE's 17x8, Yoko AVS Sports 225/45/R17, European Xenon Housings, Bailey BPV & RS4 Grill)
New Member
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Boost & temperature data
You should have a vacuum/boost connection to add this data to your graph. Air intake temperature should also be indicated to ensure that future measurements are taken at the same temps.
I need to buy a VAG tool...what are the different options from Audi and how much do they cost? Steve
I need to buy a VAG tool...what are the different options from Audi and how much do they cost? Steve
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AudiWorld Member
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I had a similar problem in the past.
For a little while, I was driving a very early experimental version of the GIAC K04 chip and it was running lean in a similar fasion. Needless to say I've got an upgrade right away. You should definitively get in touch with Wet to get updated software. You should also check your 5bar regulator. Mine started leaking and lost pressure after a while. I've got it replaced as well. The turbo 5 adjustable FPR maybe a good investment, especially if you can't get an upgraded chip as it will go up to 5.5 bar.