r33 RB25DET running rich

[R33_BFT]

I picked up my r33 a little while ago, its very stock (everything is factory besides atmo bov, pod filter, SAFC). It's running very rich, car distinctly smells of fuel. I've had a theory that it would be the atmo bov. I don't like the atmo bov so im going to go back to standard recirc valve, but I need opinions on the SAFC. Is it worth keeping and tuning to try run a bit leaner, or should i just remove it from the ECU?

[admS15]

Yep your theory is correct, get rid of that atmo bov. Should run way better then. The safc can probably stay for now but long term if you want to do more mods, get a proper ecu.

[hardsteppa]

And post up your safc settings...they can do interesting things.

[Dose Pipe Sutututu]

SAFC is shit.. you bend your AFM car runs leaner (good) but you end up running more timing at the same boost (bad).

I've played with one a decade or so ago, but to keep things safe I retarded the cas by 3 degrees.

[WMDC35]

You must've forgotten the AFM spacer

[hardsteppa]

2 hours ago, Dose Pipe Sutututu said:

SAFC is shit.. you bend your AFM car runs leaner (good) but you end up running more timing at the same boost (bad).

I've played with one a decade or so ago, but to keep things safe I retarded the cas by 3 degrees.

''played with one'', is not the same as taking the time to use them to their best effect. ie, who says you only use them for leaning out, mine adds fuel/pulls timing in top end due to boost increase.

[R33_BFT]

@WMDC35I don't know anything about SAFC's/tuning etc, this is my first car (obviously my first import) just trying to learn as I go, so what is an AFM spacer?
Also i'm not really in a financial position to buy a whole new standalone ECU/Tune, so i'm tossing up whether to get the SAFC tuned or to remove it entirely, opinions?
Im searching around for a standard bov, ill let you guys know the results once that goes in!
Thanks for all the replies and advice already given, appreciate it!

[Dose Pipe Sutututu]

26 minutes ago, hardsteppa said:

''played with one'', is not the same as taking the time to use them to their best effect. ie, who says you only use them for leaning out, mine adds fuel/pulls timing in top end due to boost increase.

they don't correct timing, show me how they correct timing.. enlighten me

[Dose Pipe Sutututu]

 

[admS15]

51 minutes ago, R33_BFT said:

@WMDC35I don't know anything about SAFC's/tuning etc, this is my first car (obviously my first import) just trying to learn as I go, so what is an AFM spacer?
Also i'm not really in a financial position to buy a whole new standalone ECU/Tune, so i'm tossing up whether to get the SAFC tuned or to remove it entirely, opinions?
Im searching around for a standard bov, ill let you guys know the results once that goes in!
Thanks for all the replies and advice already given, appreciate it!

Where are you located? I have a spare stock BOV you can have for cheap cheap

[hardsteppa]

5 hours ago, Dose Pipe Sutututu said:

they don't correct timing, show me how they correct timing.. enlighten me

hey simmer down now sex kitten....they do this in the same way that everyone likes to point out, when you lean them out  (by moving the signal lower down the load band) it can, but may not always, add in extra/excessive timing....and moving the signal up the load band in the same rpm scale to add more fuel by way of increased airflow signal can, but may not always, pull some timing out.

I would not consider them a suitable choice to 'tune' with but would consider them suitable to adjust a tune with.,,,if you get what I mean -  basically don't ask them to do too much.

I have found the main issue to be that with only hi and lo throttle adjustments the correction range is too broad, would be much better if there was a midrange throttle adjustment. But they aren't *shit*, just limited in their use. If OP is not in a position to buy a standalone as they say and already has an safc, then make the most of it.

[KiwiRS4T]

I ran an SAFC with my high flowed RB25 BUT I also had an SITC (they are getting hard to find) to modify timing. Relatively crude but do-able. Obviously a proper ecu is better but I had these when I still had an auto box.

[Dose Pipe Sutututu]

^ yep

spot on, thus I recommend to retard the cas by 3~4 degrees when playing with gameboys I mean SAFCs

[R33_BFT]

@admS15 im in Perth Matey

[admS15]

You have pm

[R33_BFT]

Hey guys I have an update
As of Friday, the car now has extreme trouble firing on warm start, cold start is perfectly fine, but the car just won't catch on warm start.
Beginning to wonder if my coolant temp sensor for the ECU is buggered, anybody know where i can buy one?

[KiwiRS4T]

I got one from an auto electrical shop.

[Trex]

10 hours ago, R33_BFT said:

Hey guys I have an update
As of Friday, the car now has extreme trouble firing on warm start, cold start is perfectly fine, but the car just won't catch on warm start.
Beginning to wonder if my coolant temp sensor for the ECU is buggered, anybody know where i can buy one?

genuine ones from kudos Motorsport for around $40 from memory.

[Dose Pipe Sutututu]

Delete the SAFC, it's probably bending too much of your AFM signal and giving you grief.

Too bad you're not in Sydney, would have recommended a Nistune.. if you still want the board, I'm able to get them below RRP for all SAU members.

[hy_rpm]

Delete the SAFC, it's probably bending too much of your AFM signal and giving you grief.

Too bad you're not in Sydney, would have recommended a Nistune.. if you still want the board, I'm able to get them below RRP for all SAU members.

Can you get me one ?
Do you install the board as i have a z32 ecu already to go
Pm me if you like with the details and price
Thanks man