Is there any bad with maf on coldside pipe

[Keefs240sx]

Is there any bad running the maf on the coldside pipe of ic opposed to the compressor housing of turbo ? Wouldnt it be cooler readings?

[c_mancuyas8]

Im not sure how much cooler it would be. Main reason people do that is to run an open bov bc if you blow off metered air it creates a very rich condition and your car will backfire.

[Keefs240sx]

Would that cause car to be hesitate when giving throttle?

[fliprayzin240sx]

It could...ECU is usually tuned to have a certain amount delay for the MAF reading. Placing it too close to the TB could potentially caused the engine to run funky. Also, depending where its placed, it might not be efficiently metering the amount of air coming thru it (ie too close to bends).

But if tuned properly, some folks swear their cars actually run better. Only other catch you'd have is if you're turbo blows and starts spitting oil, itll damage the MAF.

[c_mancuyas8]

Here's a pic of what I did. (disregard the spark plug lol) Reason being because it was dying out of throttle and also like when i messaged you I am running a open blow off valve. After moving it here my car did run better. However I dont know of any other reason why you should move it other than the issues I stated above.

If your car is stumbling check your spark plugs, distributor, and rotor. Possibly clean your maf.


http://farm8.staticflickr.com/7003/6718890147_a8a9b0c561_b.jpg

[brndck]

blow-through maf seems to be a pretty polarizing topic. some people swear by it, others say its a horrible idea. if your turbo leaks oil, it's gonna mess up your maf pretty quick.

[Keefs240sx]

I'm currently running maf on coldside pipe an it's on an sr20 s13

[ship2236]

If I didn't have the worlds cleaned ka harness at the time I woulda went blow through. My buddies FJ is running a blow through setup and for some reason runs a bit better than it did originally

[bladetech8]

I'm almost 100% sure Nissan engineered the MAF to enjoy getting oil flinged at it as well as seeing BOOST up its asshole. *Sarcasm*

Blow through MAF's have to be the worst idea ever. :facepalm:


That's just my 2¢.. Take it or leave it.

[Chronicle]

Put your MAF back on the hotside. It's not designed to operate under pressure. It will have more accurate readings in a vacuum (pipes before the turbo) than in an environment where the air is compressed and moving slower. If it's running poorly then, it's not the MAF placement, it's the tune.

[meet07]

Do like I did and use a ford lightning maf. They make a flange that you can weld to a peice of 3 inch intercooler piping. It my opinion its the only way to go if your going blow through. I just dont trust pressurizing plastic....

[huffandpuff00]

if you run a lot of psi i would worry about the clamps not holding(ie no bead) or busting the maf apart.

[Mitsubayati]

I'm almost 100% sure Nissan engineered the MAF to enjoy getting oil flinged at it as well as seeing BOOST up its asshole. *Sarcasm*

Blow through MAF's have to be the worst idea ever. :facepalm:


That's just my 2¢.. Take it or leave it.


I agree, don't use a MAF that was designed to be in a environment under vacuum under one where it sees pressure. Just recirculate your metered air after the MAF and before the turbo on the inlet pipe.

[sviellvoicae]

I have been running mine on the cold pipe for 4 years now with no issues. Its a z32 maf on an rb25det. The car has never given me an issue. Although I do agree with the above posts as well. Its one of those situations that you will get a dont do it from the people that have not done it and a yes from the people that have done it.

[Walperstyle]

I'm personally a fan of a Map Sensor myself. Tapped hole in the intake manifold, and hook it into an AEM series two, done.

[ixfxi]

I'm personally a fan of a Map Sensor myself. Tapped hole in the intake manifold, and hook it into an AEM series two, done.

is that all it takes, eh?

sounds like a 5 minute job.

[Boost_Fiend]

Im not sure how much cooler it would be. Main reason people do that is to run an open bov bc if you blow off metered air it creates a very rich condition and your car will backfire.


My maf is in the regular location. I have my bov recirculated and I still run rich when let off the trottle.

[silviaks2nr]

Why anyone would place a maf sensor in a pressurized environment with uneven flow is beyond me. They are meant to be used draw through only. Recirculate your blow off valve to your intake pipe or tune your vehicle's idle down settings to allow for a vented valve.

[pacotaco345]

No bov compressor surge ftw! Put the maf in the normal place and still make cool noises because that's whats jdm right?