Throttle cut analysis. O2 voltage and Correction factors right on the money
02-15-2006, 05:23 PM
#11
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What about intake? I wonder if the Darintake could make the difference?
There is no doubt that it is positive deviation that is causing the TC. Boost comes on hard and fast. Perhaps I have a different X code file that is different? Who knows. I have no problem controlling it with an MBC and it will come in handy when I go homebrew stage 3.
02-15-2006, 06:06 PM
#13
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nice to see the data - clearly O2s and CFs are not the issue, by chance did you log MAF #s..
- most likely MBC in parallel is the quick and best solution
- for my own information, how many Allroads do you think have Piggy Pipes or after market downpipes + exhaust + X chip (plus in your case you have done the hole in the airbox thing)?
- This maybe happening to many people and it is just that so few Allroads have a Boost guage that people cannot see the problem
- Also, did you by chance log your MAF#s, small possibility that your MAF is going bad but I'm also interested in seeing your MAF graph - it may tell us something but it would also be good to see what #'s you are producing
- for my own information, how many Allroads do you think have Piggy Pipes or after market downpipes + exhaust + X chip (plus in your case you have done the hole in the airbox thing)?
- This maybe happening to many people and it is just that so few Allroads have a Boost guage that people cannot see the problem
- Also, did you by chance log your MAF#s, small possibility that your MAF is going bad but I'm also interested in seeing your MAF graph - it may tell us something but it would also be good to see what #'s you are producing
02-15-2006, 07:12 PM
#14
MAF was in his first log.....
Personally, I would just run the MBC stand alone; get the N75 out of there. That's what I did.<ul><li><a href="https://forums.audiworld.com/allroad/msgs/143373.phtml">Click!</a></li></ul>
02-15-2006, 08:14 PM
#16
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No need for a tcd on k03s. He just needs to put an mbc in parallel with the boost set at whatever
the ecu is requeting. That will eliminat the spike and the n75 will still have full control of boost (except for the period of time the car is trying to produce above what the ecu is asking for). Very simple to do, no other changes required.