Woot! Its alive! One big issue im having though ==>
07-11-2006, 08:04 PM
#1
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Woot! Its alive! One big issue im having though ==>
car won't run with the MAF plugged in.
any idears?
doesn't throw any codes, unless i unplug the maf then it says the usual maf not plugged in error.
i can drive the car barely w/o the maf plugged in, but it wont even idle with it plugged in.
could this have something to do with using 3" housing with software that was written for the stock one? didn't think it'd make that much a difference...
also I have my DV vented to atmosphere for now, but that shouldn't affect the idle.....(i dont think)
from what i've seen from driving it w/o the MAF, the car seems to spool up relativley quickly! it sounds wicked too.
any idears?
doesn't throw any codes, unless i unplug the maf then it says the usual maf not plugged in error.
i can drive the car barely w/o the maf plugged in, but it wont even idle with it plugged in.
could this have something to do with using 3" housing with software that was written for the stock one? didn't think it'd make that much a difference...
also I have my DV vented to atmosphere for now, but that shouldn't affect the idle.....(i dont think)
from what i've seen from driving it w/o the MAF, the car seems to spool up relativley quickly! it sounds wicked too.
07-11-2006, 08:13 PM
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With the MAF plugged in you are running VERY lean ... all that unmetered air.
In addition, at idle the vacuum will open the DV (assumming stock part) and thereby alter the mixture ... prolly leaning. I wouldn't run it with all that unmetered until I had the proper software. You can do damage in a very short time.
07-11-2006, 08:16 PM
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what do you mean?
with the maf plugged in im running very lean?
the car doesn't even idle with the maf plugged in, it stalls unelss you keep your foot on the gas.
the car doesn't even idle with the maf plugged in, it stalls unelss you keep your foot on the gas.
07-11-2006, 08:21 PM
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Because it is too lean to idle properly. The ECU thinks the MAF housing is the OEM size and adds
fuel based on the amount of air it calculates is entering the system thru that small OE MAF housing. You increased the MAF opening without 'telling' the ECU. Unmetered air is entering the system and since it IS unmetered the ECU doesn't add the proper amount of fuel = lean
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07-11-2006, 08:28 PM
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yea...hopefully ill have it tuned soon. need to order a wideband asap
until then im going to watch vag-com very carefully. i got a low boost spring installed in my wastegate for now too, so it should run ok with the pc-16 chip for a couple of weeks...
07-12-2006, 03:35 AM
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thanks!
stock internals. pulling the engine this winter
im running pc-16 right now
im still unsure what im going to do for tuning, i just needed to get the car driveable.
im running pc-16 right now
im still unsure what im going to do for tuning, i just needed to get the car driveable.