is Z32 AFM really needed?

[aep886]

see everyone here is ditch the S13,S14 AFM for the Z32 item! do you know that the SR AFM can read 280hp at the wheel? unless you pusing beyond that mark! 207kw @ wheel!!!

[300sx]

nobody ever said it was needed.. its called a bandwagon

[NIZAN-R]

have s14 afm on my ca and its border line to maxing out so z32 the way to go

[phoenix s14]

Also if you actually compare the 2 items you will know why it gets changed. The stock AFM is very restictive and the Z32 is much less restrictive. Gets changed to improve overal efficiency along with some other stuff. Simple as that. Even if you are not surpassing the limit of the oem the bigger AFM is better.

Like changing to bigger TB - helps response. Like porting the cylinder head to improve efficiency. Lots of things doing little bits each helps a whole lot.

2c in bucket...

[djtreble]

And yeah according to nistune the s14 AFM is only capable of 290 bhp, anythinhg over you need to change, Z32 is just the best alternative....speaking of which, mine is ready for collection.

[Pinkfluffybunnys]

Damn, I ready to fit a Q45 unit to the sentra.

[POWDER]

Larger Diameter hole will cause better flow, the better the flow, the better the performance.... But even better than a Z32 AFM ?!?! . . . . . Is a .....

Wait for it . . . . . . .






Wait for it . . . . .





You guesed it, a MAP sensor.......

[Pinkfluffybunnys]

Larger Diameter hole will cause better flow, the better the flow, the better the performance.... But even better than a Z32 AFM ?!?! . . . . . Is a .....

Wait for it . . . . . . .






Wait for it . . . . .





You guesed it, a MAP sensor.......
Larger Diameter hole will cause better flow, the better the flow, the better the performance.... But even better than a Z32 AFM ?!?! . . . . . Is a .....

Wait for it . . . . . . .






Wait for it . . . . .





You guesed it, a MAP sensor.......

Bwahhahahahahahahaa

NO

Ok guys and Girls ask yourself this question, If MAP was the way of the future why is it still being found on the R35, Mitsu on the EVO's,Subaru on the STI's,BMW on the M's,AUDI, Opel, damn the list goes on and on and on.

Open Google, go to image’s and look for yourself. There is a reason you use MAF on an Everyday drive.

Anyway Rant over.

[POWDER]

Larger Diameter hole will cause better flow, the better the flow, the better the performance.... But even better than a Z32 AFM ?!?! . . . . . Is a .....

Wait for it . . . . . . .


You guesed it, a MAP sensor.......

Bwahhahahahahahahaa

NO

Ok guys and Girls ask yourself this question, If MAP was the way of the future why is it still being found on the R35, Mitsu on the EVO's,Subaru on the STI's,BMW on the M's,AUDI, Opel, damn the list goes on and on and on.

Open Google, go to image’s and look for yourself. There is a reason you use MAF on an Everyday drive.

Anyway Rant over.

Uuuummmm, Ya, the reason is to keep good imition standards and also sothat the standard ECU can do all the calculations and fueling for you while u drive, but have u ever asked urself this? Why do you not se an AFM on a race car or drift car? Hmmmm, now there is somthing to think about.....

AFM measures your air dencity through counting the flow and checking the temp, it's like the cheap ass way out. But as soon as u add other significant mods like a vent to atmosphere BOV it will make u over fueland make ur car stutter....

MAP is Manifold Absolute Pressure, thus meaning, U Can't read an incorrect reading regardless of mods like a bov.....

Search for MAP or MAF wiki on google and see for urself, also u might wanna get a tuners guide ebook for dummies which should explain things in the easy way.

Both have benifits and both have down sides..... MAF is purely for cars that are intended to be kept standard, or well if u never want to use a BOV and expect to only go upto it's rated efficiency level.And 90% of us, wanna mod our cars to what ever limit our pockets allow.....

Ciao

EDIT: Here are some wiki's for you......

http://en.wikipedia.org/wiki/MAP_sensor

http://en.wikipedia.org/wiki/Mass_flow_sensor

http://en.wikipedia.org/wiki/Blowoff_valve

http://en.wikipedia.org/wiki/Double_dump_valve

[rat]

I would have a MAF setup over a MAP

[djtreble]

I'm personally happy with maf setup and if it means the dumpvalve I use needs to recirc back into the system to keep things right then I'm 100 percent happy with that (it is what I am doing right now).

Maf and a closed loop system is a very good piece of mind as the ecu will adjust timing if things do go pear shape and it can mean the difference between a rebuild and no rebuild.

Its not necessarily a cheap way out either, but it allows me to use all the awesome features of the standard ecu (with nistune) instead of the limited features offered by most aftermarket management systems.

Everyone has their preferences and there is no right or wrong, just your choice. Research both methods and make up your own mind.

[aep886]

when i did my setup on the S15 i had to remove the MAF becoz of the HKS F-con...
i would say MAF for everyday drive. MAP for race!

[Pinkfluffybunnys]

@POWDER - I’m not looking for shit with you but unless you have tuned cars with both systems you’re not really going to understand the flaw's and a quick Wikipedia search isn’t going to help. I am well aware of both MAP and MAF sensors.

On a Drag car at WOT with deep pockets for dyno time by all means use a MAP, I have even helped tune a few daily drive MAP cars myself so it is possible but once you have compared both metering systems side by side you will understand why I made my previous statement.

You spend less the 10% of the cars Life on a daily drive at WOT. Part throttle, Slight Tip-in, Deceleration, Acceleration enrich and accurate metering under all weather conditions is where the MAF shines. I have seen the AFR’s on MAP cars in these conditions and the accuracy just isn’t there in my eyes.

I have also got to know tuners that can tune an everyday MAP car to run like perfect after hours of dyno time and allot of money and even then the slightest change in filter, Header, Exhaust means back to the dyno. Also because of the slight lack of accuracy Fuel economy tends to be worse with a MAP, Tuners tend to run them richer for safety.

So unless I’m putting both my cars on a trailer and taking it to the track for a quick blast, I will take a page out of Nissan, Audi’s, BMW, VW, Subaru , Mitsubishi book and for both my everyday drive’s, I will use a MAF.

The only manufacturer that runs MAP only on allot of their cars is Honda with great success but a few on the new UK Type-R are now showing up with MAF sensors , I find this very interesting.

What system you want to use is up to you,

[phoenix s14]

Well let me add my 2c now...
I run a MAF because I run Nistune which requires MAF. I vent my HKS bov to atmosphere and yes the surge of air as it blows out to atmosphere does cause it to richen. However it is very momentary. I also tune my car myself and constantly make small adjustments for drivability and effiency (my choice and also since it is fun messing with it. )

I have never used MAP sensor ECUs - let me just clear that up now. However saying that the stock ecu is limiting is 100% correct but having the stock ECU fully tunable is really really good and honestly looking at results unlimited. Everything works 100% There is no cold start issues or any other issues of any sort. Now I must also say that my tune might not be perfect and neither is my motor but with a Z32 MAF on SR20DET running no VCT and old spec DE cams I got 153.3Kw and 269Nm at 0.65bar. Which I think is nice considering the low boost. The car is also not heavy on fuel unless you press hard on the loud pedal but also then they all are. Using the wideband I also see that all AFRs are in the window where it should be. The point I am trying to make is that MAF or MAP - your choice, your preference. Considering results with both of these I do not think there is any "restiction" from any of these devices. However once and MAF is over its calibrated limit you will need a bigger one or one with a higher calibration that's all. Here MAP obviously has an advantage whereby it does not need to get changed out for a bigger one. But once you change and fit a decent size MAF I don't think you'll ever need another.

Z32 - VG30DETT - 500HP limit
Q45 - VH45 - 480HP limit
Ford Lightning - 700HP
HPX 3.5in - 700HP

some examples and all selectable in Nistune.

2c - use it dont use it - your choice.

[Pinkfluffybunnys]

So many NIStune people

It warms my heart