I am thinking about relocating my MAF to the cold side charged air, but what is the advantage to doing that? I will not be installing a BOV (I like the idea of a reticulated BPV).

Here is what is going through my head:
If the MAF is relocated to the cold charged air pipe, will it get a better reading? However if it is getting a better reading, the air will be reading hotter air than the original MAF location (ambient air temp). If the MAF Cold charged air pipe is reading hotter air, wont that cause the PCM to run a lean mixture. If my mixture is lean wont the engine, run hot and get less HP?

Is the air on the cold charged air pipe moving faster or slower than on the original location? Would that improve or disturb the MAF readings? Maybe I am completely off. Thoughts? Tuners feel free to educate us.

 

well unless you are putting on a bov, why even bother moving it, its not doing and harm and hurting your car at all where its at already, so just leave it, i would think moving it to the cold side would just mess things up and cause problems that you dont neeeeed to deal with, but thats just me, ive never heard of anyone moving it there, but yea

 

No such thing as a better reading, the maf is going to read the same amount of air no matter where you put it, and there are two air temp sensors, one in the maf and the other being the tmap sensor before the throttle body. Im pretty use the ecm uses the tmap sensor to do its final air mass calculation.
If you're not venting the bov there's no reason to relocate the maf.

 

theres no point of a maf relocation unlesss your running an atmospheric bov.....if your not upgrading the turbo dont bother running one either. it will just be noise....stock bpv is just fine for stock turbo

maf relocate allows the car to blow off then lets the air get metered....where as stock the metered air is being read before hand and when it blows off your car says WTF were did it go? usually has rich spikes to go with it.

 

OK good to know. I was just thinking that the relocation to the cold air pipe would get a more accurate reading. I guess not.
I have the Hahn cold air intake, Hahn IC and charged air piping. I was having second thoughts that I made a mistake and should have gone with zzp. (I did not know zzp existed when I bought from Hahn)

I am not a expert. Lol I know just enough to get me in trouble. So there are 2 temp sensors and it dose not matter where you put the MAF cool cool.

 

I've ran the stock BPV with a MAF relocate thinking it would be easier to tune.

No way, it's harder and I'll be switching back to the MAF on the intake soon.

When tuning for a relocated MAF in the cold CP you have to compensate for the air density at 24psi being greater than atmosphere. In my case at 24psi I am pulling about 11% fuel in the high load areas.

The ZZP lower CP with the relocate has the MAF very close to the throttle body and I see hardly any air flow at idle, my idle trims are around +40% to get them in line. Not for the faint hearted.

I agree with what's posted above after trying it for 6 mos or so, no need to relocate the MAF without a BOV.

 

yep its definately harder to tune for and requires a skilled tuner. if your not upgrading the turbo dont bother.

 

Sweet. Thanks for the info guys. I get the feeling that ZZP is for tuners/experts/real racers and Hahn is more idiot proof.

 

The Dejon MAF relocate cold side pipe puts the MAF around the center of the pipe, so you should get better airflow readings from that location. I haven't viewed the logs myself so I can't say for sure.