Limits To Pushing Stock Afm On Series 2

[johnabs]

hey guys,

i know this question may have been asked a million times, however i am running 219rkw on about 12 pounds of boost for ages. Its time for a boost controller, a new fuel regulator and thinking of a Z32. If i was to notch up the boost abit, what does the standard RB25 Series 2 AFM hold and will changing increase flow of air all over. Is a fuel regulator also essential to increase pressure is i want to see about 230rkw from a tune n boost.

thanks

john

[johnabs]

just to quickly mention, i got most supporting mods like powerfc, fmic, 660cc sard injectors, nismo pump, air filter, bov etc!!!

[paulr33]

no need for afm change at 210rwkw

if you do max the stock afm it just maxes the load axis and shoots across

so it works like map sensor (djetro) style, so no biggie really

you just loose some accuracy after you hit 5v on it

you will be able to see it on map tracer, when it peaks 5v it wont drop down on the vert axis anymore

[johnabs]

i wanna push my car to about 230-240rkw cause of a couple of mods like split coilspacks, more boost, retart exhaust cam gear, new intake etc etc. when does standard afm need to be changed, at what power? also would i fuel reg be suitable to push my big injectors n pump by pumpin more fuel in engine.

no need for afm change at 210rwkw

if you do max the stock afm it just maxes the load axis and shoots across

so it works like map sensor (djetro) style, so no biggie really

you just loose some accuracy after you hit 5v on it

you will be able to see it on map tracer, when it peaks 5v it wont drop down on the vert axis anymore

[R33GOD]

you have 600+ injectors. no need for a fuel reg. as far as your afm goes you should be able to push a maximum of 230 rwk out of the stock one.

[johnabs]

i understand.... does a Z32 AFM allow the car to suck more air hence more responsive boost. its not a matter of holding but would you notice an imporvement in performance with a z32 on boosted standard turbo. its 250 bucks and to see some response would be great. u kno wat i mean

[MZTRBO]

ive gone 234.9rwkw@10psi-12psi on a s2 afm..

Cheers

[R33GOD]

johnabs try the stock afm out and see what you get. if it makes the desired power level then dont worry about it

[johnabs]

yeh thanks for ur advice guys. ill run it with standard afm then wire it up at the tuners if i need it

cheers guys