Jump to content
SAU Community

SAFC 2 works with Z32

Robo's

By Robo's,
in General Maintenance

 Share

Recommended Posts

Robo's Mentor

Robo's

Posted
  • Author
Posted

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

Posted
  • Author
Posted

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

Posted
Posted
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

Posted
Posted

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

Posted
  • Author
Posted
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

Posted
Posted
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

Posted
  • Author
Posted

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

Posted
Posted
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

Posted
  • Author
Posted
 

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

Posted
Posted
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

Posted
  • Author
Posted
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

Posted
  • Author
Posted

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.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Kaptain
      R33 general questions

      By Kaptain · Posted

      Im not entirely sure exactly what or where its leaking from, he started to pull the boots to swap to my new tie rods + ends and it just vomited fluid, so he closed em up up, swapped the rod ends to the old rods and let me know so I can figure a solution out, im guessing its all origional as as I passed 103k miles earlier this year im sure its just in need of a full overhual/rebuild anyways.    If i could just yank it off and be good it wouldn't be an issue to ship it out and wait for the turnaround but the guy I work with doesnt really have space to keep my car for a week or two at a time, would rather drop it off and have a replacement ready to drop in
    • GTSBoy
      R33 general questions

      By GTSBoy · Posted

      What do you mean by "seals"? Internal hydraulic seals (ie, is it leaking PS fluid?) or the rack boots that close the rack onto the tie-rods? Because the former is a rebuild, and the latter is trivial that you or any nearby mechanic could do. Dunno about the cowl. Just buy what you think is required and get anything else you find/break afterwards. Wing? Dunno. Don't like R33s enough to pay attention to them. Mirror glass is just glass (on the surface that you want to polish). Go for it.
    • Kaptain
      R33 general questions

      By Kaptain · Posted

      Hello! Long time lurker, been using the forums to address concerns and questions from afar for a while but I've struggled to find some answers so I guess its about time I made an account and formally asked some more knowledgeable people, since finding local skyline owners is hard (and shops that are knowledgeable or trustworthy to work on 'rare' cars are non existent out where im at, as skylines are quite uncommon to find in the wild around here). So the main 3 questions I have, 1: Steering rack has blown seals, well.. they kind of hold but they are not sealed properly anymore and as my R33 is my DD, i cant exactly rip the rack out and send it off or attempt to fix myself. As most refurb ones are around $1,100 or more shipped, and I have other things I need to work on around the car, I was seeking clarification on whether an S15 rack will more or less bolt right in, and whether a common mechanic could do any other required work to get it to fit. I ask, as I've found a supplier than can sell a manufactured as oem one for around 400, if not I'll likely order a used one from Jacks JDM, and take a risk on the seals there. The second question i have is that im replacing the front wiper cowl and have planned to buy 4 new clips and a new center clip but wasnt sure if there were any other clips that would also need to get replaced while I was at it. Given im sure any that are there now will simply break when I remove the old cowl... Last thing would be a fairly straight forward question, i think. If I manage (strong if, finding one has proven to be a pain) to find a R33 GTR spoiler/wing will it require much modification to bolt to a S2 R33 GTST? I've read the bolt patterns dont match but otherwise would bolt in, only options I have found with much luck is China stuff on ebay and carbonetics, which has a nice $650 shipping fee... so if anyone has any pointers where a US chap could locate one that would be great Random side question as well, the mirrors as I understand are mirror glass, and as im planning to polish my windows from water spots and surface scratches, i was hopeful cerium oxide would be fine for them too, as my research points to, but clarification is always nice. Any pointers would be appreciated, and while I have scoured the internet for answers if I missed a prior post somewhere that may answer these directly please point me towards it, as i must have simply missed it. I have seen a post here or there that has mentioned it, but I usually get 50-50 answers, or half answers... I dont have a lot of fab experience or mechanic experience, outside of hydraulic and pneumatic stuff I did in the military and with how hard it is to source stuff in the US, id rather not wing it and hemmoraghe money lol. Thanks guys! Sorry for the monumental first post haha
    • AdiR34
      Did tie rods. Steering now not "springing" back.

      By AdiR34 · Posted

      Yep, there's a very minor drift left that happens a few seconds after letting go of the steering wheel, but not enough to bother me. Enjoying the car still!
    • Keeper
      S A U N S W Club Membership

      By Keeper · Posted

      Got you mate. Check your email!
×
×
  • Create New...