Another Z32/q45 Question

[R31Nismoid]

we'll see, stay on topic mate

well, looks like i will go for a standalone ecu:blitz, mines.

NFW am i buying a pfc. every man and his dog has one.

and yet, they are hell expensive.

easy to say buy one if ur not a uni student, and a casual employee. BE REALISTIC

i will look into a standalone ecu. any suggestions would be sweet.

ps still want to run safc

If you think a stand alone like a Mines/Blitz is the way to go... you need to do some more investigation

If you wanna use excuses like uni/casual, then why are you trying to build a 260rwkw car?

Fuel alone will send you broke, let alone maintaining the car to a level that the motor will live for a long period

[Finny]

Ok set SAFC to be input Z32/Q45 then output R32 stock (I think its 4).

That will get the AFM to work with your SAFC but 1 BIG problem...

Doing this gives you absolutly no advantage... because your SAFC is converting it to the stock AFM signal and theoreticly say the Z32 handles twice as much air the SAFC will convert the signal from 50% to 100% so as far as the ECU is concerned the AFM is the same as stock. So Yes you can run a Z32/Q45 AFM but with no benefit.

I wouldn't be going and buying a new AFM this is what I would do.

50% AFM bypass so there for exactly 50% of the air is going through the bypass and not being read by the AFM.

eg. messure up the stock AFM and have the same size pipe maybe a tad smaller due to the internals giving restriction and bypass the AFM with it.

Now put your Injectors in and then calculate what you need to do to your SAFC to make it work.

I will try and explain this but I dont garentee you will understand it

Now with a stock setup the AFM reads 100% of the air and the Injectors put out 100% of the petrol the ECU tells it to put out.

With a 50% AFM bypass the ECU is telling the injectors to put in 50% of what is actually needed but 550cc injectors are 48% bigger. So ECU is now putting in 74% of petrol needed .5+(.5*.48)

So you now go to your SAFC and set entire rev range to +26% to make the ECU tell the injectors to inject the correct ammount of petol and woulah your AFM can handle twice as much air so theoreticly twice as much power.

If you are planning to do any thing like this make sure you run it on a dyno so you know if your Air/Fuel mixtures are safe.

That would pritty much be the cheapest way and also the dodgiest way but by the looks of your avatar you like dodgy.... I brought one of thoes Turbo's basicly for a laugh and after 3 days of 10psi boosting the turbo had that much shaft play that the compressor wheel and exhaust wheel were hitting the housing... Also oil seals shot out of it in the matter of hours. We had fun smashing the remains of that turbo

[r33cruiser]

yea, cheers finny, i saw this in ur profile. lol, im also brad and 20yrs old.

but these guys have sort of converted me. for the goal i am aiming for i think it is best that i just save up for a power fc.

atleast the pfc seems to be a long term fix. so i guess it is the simplest option, and opens other options.

thanks for the input.

cheers

[chrisdoherty]

I know that this is an old post but i thought i would still add my bit to prove to you guys that safc can support power. i have an r33 with 80000kms, standard ecu, standard coils, t66 turbo, 3.5" exhaust, standard injectors, safc 1, standard afm and a 2:1 fpr. i made 345rwhp on 16psi and 408rwhp on 20psi. air fuels at 11.3 and base timing at 15 deg. ignition timing going to 16deg. ( all safe) car has been going for 6 months now. so if someone wants to muck around with safc's i say go for it. however i only went this way to see what power i could get with standard ecu. i am now going in the direction of ditching afm and running a microtech or autronic in search for more power. anyway thats all i wanted to say. hope it helps someone.