Just insalled forge 004
#22
10-07-2009, 09:08 AM
Relocate your MAF to be downstream of the BOV. IMO it should be as close to the intake manifold as possible, whether you have a BOV or a DV. It baffles me that Audi would put it where they did. The only way it's going to be anywhere near accurate in its stock location is if you're getting ambient air into your airbox, and your intercooler cools it back down to ambient later on. I mean, that's the hope anyway, but it's not going to be right if it's not the case. The closer the MAF to the intake manifold, the more accurate (as far as what the engine's actually getting) the air flow and temperature can be measured.
Last edited by dragonrage; 10-07-2009 at 09:10 AM.
#23
10-07-2009, 03:58 PM
dragonrage Relocate your MAF to be downstream of the BOV. IMO it should be as close to the intake manifold as possible, whether you have a BOV or a DV. It baffles me that Audi would put it where they did. The only way it's going to be anywhere near accurate in its stock location is if you're getting ambient air into your airbox, and your intercooler cools it back down to ambient later on. I mean, that's the hope anyway, but it's not going to be right if it's not the case. The closer the MAF to the intake manifold, the more accurate (as far as what the engine's actually getting) the air flow and temperature can be measured.
10-07-2009 12:55 AM
10-07-2009 12:55 AM
#25
10-07-2009, 06:21 PM
Okay, someone please explain. Is it that these specific ECUs are tuned such that MAF is not SUPPOSED to read airflow into the engine, as it does with traditional MAF setups?
#26
10-07-2009, 06:55 PM
i think the maf works as it normally should, the map sensor just reads the air flow before going into the manifold and corrects anything that has changed after going through the turbo etc..
#27
10-07-2009, 06:58 PM
If the MAF works "normally" as in like in most cars, then it SHOULD be close to the intake manifold.
#28
10-07-2009, 07:16 PM
if it was close to the manifold we wouldnt have a map sensor (manifold absolute pressure), i just mean normally as in reads the amount of air coming into the engine and the map makes any adjustments before it goes through the manifold.
#29
10-07-2009, 07:24 PM
Not true at all. Most cars have both MAF and MAP sensors, and most cars have the MAP close to the intake manifold and measuring the amount of air that the engine draws (including PCV)