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problem with RS6 turbo build performance

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Old Aug 7, 2009 | 02:32 AM
  #31  
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Originally Posted by 02AvantImola
I'm glad to see you went with the RS6's. If you haven't done it yet, boost leak check it. I have had an issue with it overboosting when there was a small leak present. I highly doubt it is your wastegates, those rarely fail. N75 usually doesn't stick open either, usually if the N75 is bad you peak correctly but lose boost much faster.
ya.. the beast pull from 3800 to 7250 is stupid.. usually you get a peak torque and then kinda.. ho hum through the rest of the rpm's... not with these turbos.. cant wait for the meth/water in a lil bit.. another 75 ponies or so.. whats the proper way to check for a boost leak?? i always have air passing through the octopus/intake y pipe inlet.. what all do i have to block off?? i cant have a huge boost leak as boost builds so smoothly and barely peaks over 25 psi.. and then to 24 or just below.. i gotta get it running properly with new o2's before i go too deep.. its easy to make a mountain out of a mole hill... so ima fix my codes first and then see how she runs.. EPL said that they may have to take a lil boost off depending on how the wastegates were set up..
 
Old Aug 9, 2009 | 11:32 PM
  #32  
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okay.. problem still persists... now it happens on a regular basis.. more frequently than not.... pulls like crazy at 25 psi.. then it goes into limp mode and allows only 10 psi.. no codes are noted, but my fuel adaption at idle is good but long term is -7% to -8.6%... so its running rich....any help would be appreciated..
 
Old Aug 11, 2009 | 01:13 AM
  #33  
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okay.. so those numbers arent too far off... but something is still causing it to go into limp mode.. we are logging and trying to figure that out as we speak.. i should know something by the morning....
 
Old Aug 11, 2009 | 11:16 AM
  #34  
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did you say you replaced the MAF at some point?
 
Old Aug 11, 2009 | 11:26 AM
  #35  
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just with a brand new hitachi from audi cause the bosch is weak and thats what everyone uses for their tune.. its got about 1000 miles on it..
 
Old Aug 12, 2009 | 06:42 PM
  #36  
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ok guys, i think my car problem is about to be resolved. so do some checking and talk with tony out at EPL, he tells me to log measuring blocks 112 with vagcom which is the EGT sensor. therein lies the problem. my bank 2 sensor temperature is at 1035 degrees Celsius, and it was glitching between that and 945. so i need a new sensor. driving the car and temps showing the lesser number and it runs perfect, then as soon as it starts glitching out, car runs like ***, fuel gets dumped into the car and o2 voltages go through the roof and boost is limited to 10 psi.. looking for a new sensor now so if anyone knows where to get one for less than 285, let me know..
 
Old Aug 13, 2009 | 11:38 PM
  #37  
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120.00 tested, used with a 1 year warranty from shokan...
 
Old Aug 14, 2009 | 05:52 PM
  #38  
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replaced driver side EGT.. problem fixed so far.. crossed fingers.. ill do some vagcom acceleration tests tonight and post.. if all is fixed, ill have some new clean videos up soon.. ;->
 
Old Aug 15, 2009 | 09:56 AM
  #39  
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awesome!
 
Old Aug 15, 2009 | 11:28 PM
  #40  
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okay.. driving around with my girl today, i was like.. well i need to find an open spot of road and try dragging it, so when i go in like 3 weeks or so i wont spend the first 3 or 4 pulls just figuring out where to keep the rpms at and how to drop the clutch.. new stage 4 clutch and all never abused but about 1200 miles on it.. plus different power band with the RS6's and all.. so find a spot.. drop the clutch at around 3500.. not toooo bad of a take off.. then as i decelerate from 65 to try again, i notice my car's running different.. so try brisk acceleration and... blah.. 10 psi again.. get home... hook up vagcom.. instantly i go to blocks 112.. and notice.. bank 1 EGT sensor is 1035* celsius and bank 2 EGT sensor is 945* celsius.. i coulda saved 30 bucks in shipping.. ill have another EGT for bank 1 by tuesday and try logging some acceleration trips on vagcom then.. geez.. im gonna go **** on an electric fence or something...
 
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