20b AFM in FC idea
I was looking inot upgrades to my s5 AFM along with getting a Greddy E-manage.
I saw in the manual that the 20B is the type of AFM. 1. Is it bigger than a S5 AFM? 2. Anybody got some pics of either of NA/turbo AFM? |
Again, why would a bigger AFM offer you in performance?
-Ted |
maybe he can pull enough air to make the s5 AFM a restriction? :dunno:
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Originally posted by RETed Again, why would a bigger AFM offer you in performance? -Ted Why wouldn't it? bigger passage through the AFM = more flow, right? This is the concept in a lot of aftermarket MAFs for other cars, like the one I have for my Ford Escape. |
As ted mentioned before in a similar thread, the stock afm and the stock ecu max out at approximatley the same time. Meaning if you have a bigger afm youre still left with an inadequete ecu, so you might as well go stand alone w/ a map sensor and ditch the afm all together.
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or it all really doesnt matter because very few NA's will ever even get close to that point.
thanks. |
The stock boost sensor maxes out at 15psi.
The stock boost sensor retards ignition timing. The stock 4x550 fuel injectors can only support about 250bhp at the flywheel. The stock fuel pump, with full voltage, can only support about 300bhp at the flywheel. Moderate increases in power is fine with the stock ECU. If you looking to make over 300hp, the stock ECU is not efficient at controling fuel and ignition for power levels that high. This is where an aftermarket stand-alone EMS is highly recommended. The stock 20B Cosmo AFM is rare enough to find. You're going through all that trouble to increase airflow capacity, but the stock ECU and fuel system still need to be addressed. You're better off spending that money taking care of other things like the exhaust, intake, CDI box, boost control, etc. -Ted |
Originally posted by jacobcartmill or it all really doesnt matter because very few NA's will ever even get close to that point. thanks. Are we talking about n/a's??? The thread starter has a turbo |
Originally posted by RETed The stock boost sensor maxes out at 15psi. The stock boost sensor retards ignition timing. The stock 4x550 fuel injectors can only support about 250bhp at the flywheel. The stock fuel pump, with full voltage, can only support about 300bhp at the flywheel. Moderate increases in power is fine with the stock ECU. If you looking to make over 300hp, the stock ECU is not efficient at controling fuel and ignition for power levels that high. This is where an aftermarket stand-alone EMS is highly recommended. The stock 20B Cosmo AFM is rare enough to find. You're going through all that trouble to increase airflow capacity, but the stock ECU and fuel system still need to be addressed. You're better off spending that money taking care of other things like the exhaust, intake, CDI box, boost control, etc. -Ted That's true, makes sense. My first thought was just how lots of new cars and their MAF systems can be upgraded with a high flow one for good gains. But what you say all is very true. |
i know Haltek or Wolf or Microtec would be better....but
it is all about the challage and it is MY CAR...... Ted is consistantly preaching stand alones.... I know the benifits.... The reason for posting is to get my questions answered not to find a toatl solution.... |
The stock boost sensor maxes out at 15psi. The stock boost sensor retards ignition timing. The stock 4x550 fuel injectors can only support about 250bhp at the flywheel. The stock fuel pump, with full voltage, can only support about 300bhp at the flywheel. Moderate increases in power is fine with the stock ECU. If you looking to make over 300hp, the stock ECU is not efficient at controling fuel and ignition for power levels that high. This is where an aftermarket stand-alone EMS is highly recommended. The stock 20B Cosmo AFM is rare enough to find. You're going through all that trouble to increase airflow capacity, but the stock ECU and fuel system still need to be addressed. You're better off spending that money taking care of other things like the exhaust, intake, CDI box, boost control, etc. I think a middle ground between a SAFC and a stand alone has been needed for many years to be used by fc owners. Henrik is making great progress with the rtek ecu chips, and the e-manage looks to be very promising as well. Originally posted by mr_vaughn i know Haltek or Wolf or Microtec would be better....but it is all about the challage and it is MY CAR...... Ted is consistantly preaching stand alones.... I know the benifits.... The reason for posting is to get my questions answered not to find a toatl solution.... |
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