Silvia Club of NSW

Why drive when you can drift?
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PostPosted: Thu Sep 27, 2007 5:36 pm 
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T66
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Location: Melb/Syd
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yeah pretty much...spend what it takes.

what about the emanage ultimate?


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PostPosted: Thu Sep 27, 2007 5:54 pm 
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Takumi
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PowerFC is the only sensible option.

Ideally go at least 550cc injectors, RB25 or Z32 AFM, a set of cams, RAS, and a fuel pump.

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PostPosted: Thu Sep 27, 2007 6:33 pm 
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Overlord
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emanage? heh... save your pennies for a proper ecu

Have a look at some of the stuff fergo is selling here http://forum.silviansw.com/viewtopic.php?t=28570 . Injectors etc

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PostPosted: Thu Sep 27, 2007 10:00 pm 
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Admin Team
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Liz wrote:
oic

can i get someone to argue with Dave please?


everyone is scared cos i'm right almost half the time

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PostPosted: Thu Sep 27, 2007 10:28 pm 
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Quad T78
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^ yeah but your 50% wrong sometimes :P

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PostPosted: Fri Sep 28, 2007 10:39 am 
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T66
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yeah but I want to know WHY it's better.

what's an RAS? lol

remember.. little words boys!!!! lol


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PostPosted: Fri Sep 28, 2007 11:09 am 
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T04 Hybrid
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RAS = rocker arm stoppers :D


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PostPosted: Fri Sep 28, 2007 11:22 am 
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In a nut shell;

an engine/ecu equiped with an air flow meter is measuring the volume of air the engine is sucking in and spits out a 0-5V signal (in the case of a nissan hot wire type afm) so at x revs when your stuffing 20psi down the engines throat it knows how much air you are using so it gives the right amount of fuel for that much air.

a map sensor equiped engine is effectively guessing how much air the engine is using based on manifold pressure so it is a lot more tune dependant. Your primary load signal is constant as soon as you are at peak boost so from 3500-7000rpm at 20psi for example the only variable is revs. For wide open throttle usage it works very well. For partial throttle not so well. So as a fix they depend on the tps 0-4V or 5V signal for partial throttle openings up to a certain percentage of throttle opening. The tps signal is not load dependent so getting the light throttle tune right for all situations is difficult, and generally is no where near as nice as a properly set up afm equiped car in this part of the map.

The pfc, for example, only looks at the tps as an on/off signal, so it can say hey, speed =0, tps =0 we must be at idle. speed =30 and decreasing, tps =0, we must be decelerating, better make sure i catch the revs at 1000rpm so it doesn't stall. As soon as the throttle is touched, the pfc is looking at the afm. The only time it falls down is if you have a big arse turbo with a small turbine housing that causes reversion at idle and low load as that mucks up the signal.

simple enough?

And yeah, on an sr cams and rocker arm stoppers go in at the same time.

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PostPosted: Fri Sep 28, 2007 1:52 pm 
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Token Old Guy
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and that ladies and gentlemen is why you buy a Haltech where you can use a combination of both the TPS and the MAP sensor both of which register 0-5v. More map points and tunability then the PFC will ever have.

(puts on flame proof suit and waits for reply :lol: )

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PostPosted: Fri Sep 28, 2007 1:57 pm 
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Overlord
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You are an idiot

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Sil80 - SR20DET 231rwkw
Silvia Race Nugget - SR20DET 225rwkw
Stagea - DeathWagon - RB25DET 185rwkw.

My Lame Gallery: http://www.toomuchboost.com/gallery/main.php


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PostPosted: Fri Sep 28, 2007 2:01 pm 
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T66
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aw you're such a good boy Dave! lol

ok I understand it now.

and my next question.. why power fc over emanage? because it's going to be hell difficult to get my hands on a power fc!!!


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PostPosted: Fri Sep 28, 2007 2:03 pm 
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Token Old Guy
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umm tunability... PFC craps all over emanage.

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PostPosted: Fri Sep 28, 2007 2:03 pm 
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pfc = good
emange (and haltech) = poo

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PostPosted: Fri Sep 28, 2007 2:30 pm 
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T66
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but whyyyyyyyyyyyyyyy?

and how on earth would i even get my hands on one?


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PostPosted: Fri Sep 28, 2007 2:32 pm 
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TO4
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I don't know if this is in your price range, but they seem to have them for the majority of models...

http://www.nengun.com/apexi/power-fc-hand-controller


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