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SAFC 2 works with Z32

Robo's

By Robo's,
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Robo's Mentor

Robo's

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2 in and 4 out.

It flies now, it seems to have got rid of my flat spot around 5000rpm which is where the AFM was maxing out. Im very happy at the moment, stay tuned for some dyno numbers but going by feel, i can certainly feel the difference.

Robo's Mentor

Robo's

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Once installed it ran lean as buggery, so i quickly added some fuel everywhere into it via the SAFC. So at the moment its had a quick road tune but its feeling very quick. I will have it on the dyno next week to accurately tune the A/F ratios.

knore Grand Master

knore

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Once installed it ran lean as buggery, so i quickly added some fuel everywhere into it via the SAFC.  So at the moment its had a quick road tune but its feeling very quick.  I will have it on the dyno next week to accurately tune the A/F ratios.

Ok cool, i mite take it with me to the dyno and swap it over so it gets tuned straight away.

The Z32 is larger in size to the standard one too isnt it? That means new pod filter aswell :cheers:

Cubes Grand Master

Cubes

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So 2in4out doesn't change the afm's voltage to what the stock item would have been?

Even though you did this it still needed more fuel to be put in?

How did you know it was running lean?

2in tells me is that the safc is receiving (voltage vs airflow) from (2) a Z32 AFM.

4out tells me that the safc is changing (voltage vs airflow) from (2) a Z32 AFM to (4) a RB20/25 AFM.

So theoretically if you select 2in4out you shouldn't have to change any fuel settings as it would be as if it is still running the RB afm (5v limit would still be at the same vs airflow).

I'm about to do this to a S15 (Z32 AFM).. The reason for all the questions. :rofl:

Robo's Mentor

Robo's

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So 2in4out doesn't change the afm's voltage to what the stock item would have been?

Even though you did this it still needed more fuel to be put in?

How did you know it was running lean?

 

2in tells me is that the safc is receiving (voltage vs airflow) from (2) a Z32 AFM.

4out tells me that the safc is changing (voltage vs airflow) from (2) a Z32 AFM to (4) a RB20/25 AFM.

 

So theoretically if you select 2in4out you shouldn't have to change any fuel settings as it would be as if it is still running the RB afm (5v limit would still be at the same vs airflow).

 

I'm about to do this to a S15 (Z32 AFM).. The reason for all the questions. :rofl:

Its called pinging. Ive added some more fuel in and its not pinging any more. A dyno test should give me the correct answers.

knore Grand Master

knore

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So 2in4out doesn't change the afm's voltage to what the stock item would have been?

Even though you did this it still needed more fuel to be put in?

How did you know it was running lean?

 

2in tells me is that the safc is receiving (voltage vs airflow) from (2) a Z32 AFM.

4out tells me that the safc is changing (voltage vs airflow) from (2) a Z32 AFM to (4) a RB20/25 AFM.

 

So theoretically if you select 2in4out you shouldn't have to change any fuel settings as it would be as if it is still running the RB afm (5v limit would still be at the same vs airflow).

Yeh thats what i was thinking

so its the same physcial size as the rb25 afm? sweet :headspin:

Robo's Mentor

Robo's

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Maybe as the standard AFM was maxing out, it wasn't getting the optimum tune at those rpms. Now with the AFM reading, the computer is giving me a decent tune, hence why the 5000rpm flat spot has gone. Im running a HKS 2530 and im seeing some strong results, though i reckon you would gain some benefits with the stock turbo.

Cubes Grand Master

Cubes

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Its called pinging. Ive added some more fuel in and its not pinging any more. A dyno test should give me the correct answers.
The Rb30DET in mine takes until around 13.5:1 before it starts pinging.

Even then at high rpm the knock sensor doesn't pick up pinging, only during lower/mid rev's.

A definate ping can be heard once is hits 14:1, then it fuel cuts.

What I'm getting at is pinging is the last thing you notice when it is leaning out.

Robo, You still didn't really answer my question.

So the AFM reading on the SAFC is definately reading lower with the 2in4out?

Before it may have been hitting say 100% at 5500rpm not it is maybe 80%?!?!?

Robo's Mentor

Robo's

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Robo, You still didn't really answer my question.

So the AFM reading on the SAFC is definately reading lower with the 2in4out?

 

Before it may have been hitting say 100% at 5500rpm not it is maybe 80%?!?!?

Just about to go for a test drive, i will let you know about the 100% flow.

Sometimes my SAFC changes to pressure and it takes some fiddling to get it too show Air Flow %.

Cubes Grand Master

Cubes

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Just about to go for a test drive, i will let you know about the 100% flow.

Sometimes my SAFC changes to pressure and it takes some fiddling to get it too show Air Flow %.

I really am interested if the safc changes the voltage back to std as it may be quite a bit of a pain in the arse if I fit it to the s15 then find out i can't drive it.

Especially considering the s15 has a 45mm little hole for the afm. :rofl:

It may throw it out quite a lot more.. BUT if the safc does the adjustment and returns the voltage back to normal then it may be ok.

Robo's Mentor

Robo's

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I really am interested if the safc changes the voltage back to std as it may be quite a bit of a pain in the arse if I fit it to the s15 then find out i can't drive it.

 

Especially considering the s15 has a 45mm little hole for the afm. :rofl:

It may throw it out quite a lot more.. BUT if the safc does the adjustment and returns the voltage back to normal then it may be ok.

The settings for a S15 is In 05 and out 05. When connecting a Z32 too it, the settings will be IN 02 and out 05.

Robo's Mentor

Robo's

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Car is running very strong. Im running around 17psi with the HKS 2530, SAFC2 and Z32. I have seen a little more on cold nights.

My dyno man is currently getting his dyno recalibrated so hopefully this week i will be able to fine tune the mixtures and maybe see how much boost it can handle.

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