11% More Flow By Removing The Mesh In Your Afm

[chef_stagea]

i can allready tell this topic will be a hecktic one lol

but i read in a magazine (HPI) that by removing the mesh that is apparently ment to "smoothen out the flow" of the air going in will actualy give you 11% more flow with out them... they said there there mainly to stop the whetston bridge? (afm sensor) getting KO'd by random stuff if your pod falls off?? worth while to try im thinking just wanted to see what all you dudes thaught cheers.

[Inline 6]

whats the increase if you take your pods off though

step 1 buy a cheap exa turbo

step 2 perform said mods

step 3 see how long it takes to blow up

Edited May 26, 2009 by Inline 6

[RubyRS4]

I always go by the rule that the factory put it there for a reason.

Also ... how much of that (claimed) 11% increase will you gain depending on what filter you run?

Seems like a too greater risk to me, for such a (realistically) small gain. I doubt you'd notice any gain.

Any other thoughts?

[Krishy]

umm i would rather keep the mesh and not have the extra 11% flow and keep everything safe in the line Adam

but then again chances of that falling is pretty much none so would be worth giving it a go

[scandyflick]

11% is a fair bit. maybe 1%.

maybe.

[Damo_R34]

I always go by the rule that the factory put it there for a reason.

Also ... how much of that (claimed) 11% increase will you gain depending on what filter you run?

Seems like a too greater risk to me, for such a (realistically) small gain. I doubt you'd notice any gain.

Any other thoughts?

Nissan put the turbo, boost solenoid, exhaust and suspension there for a reason too, why did you upgrade?

[scandyflick]

they mightve put em there for a reason, but that doesnt mean those parts didnt suck.

ps, ill be buying some donuts from you me thinks.

Edited May 26, 2009 by scandyflick

[typevu]

Nissan uses black grills and mesh for a reason

[Inline 6]

Nissan put the turbo, boost solenoid, exhaust and suspension there for a reason too, why did you upgrade?

they were following certain neccessary things in building a new car, you cant roll a car off the production line with 95db exhaust systems and rock hard coil overs

however im sure they dont say, hey i know a way we can make this car go slower for no apparent reason

[RubyRS4]

Nissan put the turbo, boost solenoid, exhaust and suspension there for a reason too, why did you upgrade?

They're not sensitve to particles in the air

(turbo 'maybe' if you run no pod and drive thru sand storm)

Nissan uses black grills and mesh for a reason tongue.gif

Ouch! Why all the blue mesh hate

Edited May 26, 2009 by RubyRS4

[Dohmar]

they were following certain neccessary things in building a new car, you cant roll a car off the production line with 95db exhaust systems and rock hard coil overs

however im sure they dont say, hey i know a way we can make this car go slower for no apparent reason

The reason there is mesh in an afm is to keep the air flow at a consistent speed. If you remove the mesh you can get turbulence in certain portions of the cross section while the air starts circling around the inside of the tube, and that in turn gives your AFM an incorrect reading - yes you can force more air thru the tube if you remove the mesh but the electronics wont actually read it consistently because the sensor is in the middle of the tube - turbulence could put a dead spot in that very section (like the eye of a tornado)

-D

[RubyRS4]

The reason there is mesh in an afm is to keep the air flow at a consistent speed. If you remove the mesh you can get turbulence in certain portions of the cross section while the air starts circling around the inside of the tube, and that in turn gives your AFM an incorrect reading - yes you can force more air thru the tube if you remove the mesh but the electronics wont actually read it consistently because the sensor is in the middle of the tube - turbulence could put a dead spot in that very section (like the eye of a tornado)

-D

And there you have it

[end thread]

[steveP]

but.. what does 11% flow equate to? ..2% increase in kws, 10kph increase in top speed, less turbo lag??

[Inline 6]

....circling around the inside of the tube, and that in turn gives your AFM an incorrect reading - yes you can force more air thru the tube if you remove the mesh but the electronics wont actually read it consistently because the sensor is in the middle of the tube - turbulence could put a dead spot in that very section (like the eye of a tornado)

TURBULANCE IN A TURBO wouldnt that make it go faster? twin turbulance super mod

Edited May 26, 2009 by Inline 6

[shy_s6]

i did this about 8 years ago in my 33 you can see a slight difference on the dyno n gained 4rwkw if i remember

yes it was a before and after thing and with no filter i gained like 8rwkw

if you have a decent filter on its a ok and free upgrade, tune does help it along also

[Inline 6]

dont dyno figures usually vary 4 kw between runs anyway though? how many runs u measure?

stickers add 10RWKw ASWELL

Edited May 26, 2009 by Inline 6

[RubyRS4]

but.. what does 11% flow equate to? ..2% increase in kws, 10kph increase in top speed, less turbo lag??

IMO prob only slightly faster spool up. Turbo size and filter used already determines volume of air. It would only have a small effect outside the effects of turbo and filter. I reckon its just spools up marginally quicker, but you'd wouldn't know it.

Anybody got any "on paper" testing/documentation?

Edited May 26, 2009 by RubyRS4

[Carbon 34]

maybe replace it with blue mesh, it will get 11% for sure then

dont remove it.. unless you want to destroy the tiny ass hot wire on the sensor ....not worth it for 11% gain in seat of the pants take your spare out and stereo

Edited May 26, 2009 by sapphiregraphics

[craig R33]

did this to the 33 the night before the pfc got tuned.

never had a problem with it, but in the end, i still to this day have no idea why i did it lol

[Dohmar]

maybe replace it with blue mesh, it will get 11% for sure then

dont remove it.. unless you want to destroy the tiny ass hot wire on the sensor ....not worth it for 11% gain in seat of the pants take your spare out and stereo

yeah if u wanna go faster, follow my dads advice "Eat Less Kebabs"

Truer words ne'er spoken.

-D