[Mk2] [Turbo] Need help connecting HKS S-AFR

[GreddyMR2]

Hi,

I am planning to connect HKS s-afr, but don't know where to connect some wires.

Those P wires?
RPM signal?


Also, what type of AFM I have?


Here is the ecu diagrams, please help me identifying the wires... My ECU is 17322

[2mad]

Rpm signal wire is pin (IGT)


P wires...

Cut the wire going to (Vs)

Attach the yellow wire to the cut portion of wire going to the ecu. (yellow = signal output)

Attach the white wire to the other cut portion of the vs wire. (white = signal Input)




Kev.

[alanmr2turbo]

i'm sure i took my rpm from the rear of the rev counter

[GreddyMR2]

Thank you mates! Now it's clear about connection, but there is still a question about AFM type. Whitch one should I choose?

[2mad]

Iirr .. Hot wire 0-5v should work ok.



Kev.

[GreddyMR2]

OK, so to be sure about P wire...
Yellow HKS wire must be connected to the wire which is left in the ECU, right? Like ECU VS wire-> yellow HKS wire -> HKS unit -> white HKS wire -> ECU wire going to sensor.

And one more question.
Shoud I use EIDS function or not? Because it says it's not applicable on speed-density applications. It also says: "Additionally, an Electronic Idle Stabilizer function (EIDS) function, which buffers the dramatic airflow meter signal fluctuations, prevents the engine stalling or stumbling effect associated with the sudden imbalances in the air/fuel ratio of airflow meter-equipped vehicles that utilize discharge blow-off valves that vent to the atmosphere."
Do you think that it will work on MR2? Because I really want to have a BOV to atm

[2mad]

Yes thats correct , the white wire is connected to the sensor (maf) and the yellow wire is connected to the ecu.

I've never had EIDS unit fitted to my car so cant really comment, sorry.

I did have a hks bov fitted though with no problems.

[GreddyMR2]

2mad, question for you. You said you ran bov to atm without problems and I see your car is rev1.
I tried it. I disconnected the hose from the factory bov and then first gear, clutch and the car shut off. Also, I hear a lot of banging from my exhaust. Of course I like it, but I want my car to run perfectly and not to shut off after changing gear
I connected the s-afr, but still it seems not to help with bov to atm. But it's strange that EIDS symbol is not flashing on a screen, maybe it's not working or not turned on? The dip switch for EIDS is tured ON.

And also, as I understad, ors MAF is not a hot wire, no? It's VANE air flow sensor?
http://www.autoshop101.com/forms/h34.pdf

[2mad]

I dont think the stock bov can't be ran to atm. you would need to run an after market valve like hks, sard, blitz, greddy ect.
Iirr the stock valve stays open untill the cars on boost, this would give you a massive unmetered air leak off boost.

I ran a hks ssqv 2 for years with no problems.


Did the car run ok with the hks safr set to.. Hot wire 0-5v ?



edit.... Mr2 turbo revision 1/2's have a "flapper door" type air flow meter. unfortunately the hks safr does not have this setting, iirr the closest setting available is Hot wire 0-5v.

Let me know how you get on, hope it works ok for you.

[GreddyMR2]

Thank you for an answer. In that case I am looking now for an aftermarket bov

I think it's ok with hot wire 0-5v, my problems then probably are caused by stock Bov to atm.

Today after work I will put the hose back on the bov and then will try to play a bit with s-afr. I still need it to configure it by manual (I mean self-learning option on s-afr) and have to put all the percentages to 0 untill I have a wideband to see my A/F ratio.

[2mad]

After alot of searching I managed to find full instructins for your hks super-afr.

http://www.mkiv.com/techarticles/hks_afr/index.html

Hopefully it should help with resetting the unit.


Kev.

[GreddyMR2]

Thank you, but I already have and I think I found a mistake what I did wrong

Now I am thinking why EIDS is not turned on... Manual says it turns on when airflow signal surpasses the set range of inputs when throttle is released. What does it mean?

[GreddyMR2]

I still can't make EIDS function to turn on... I did a couple strong accelerations, but nothing.
What do you think which wire is connected to EIDS? Maybe one of them is not connecting right or something.
Also, I dont think I feel anything when turning rsp knob to various possitions.
And I don't know if this unit works or this is only in my imagination, but I think the car runs better, even the wheels start slipping on high revs in 1st gear on dry asphalt when it didn't before. Or just my tires starting to wear out

[2mad]

Hi mate,

Do you have the standard bov hooked up to recirculate.

Did you do the s-afr self learning procedure.

Have you zeroed the unit so its not adding or subtracting fuel when your out driving.


From reading through the instructions a few times.. once the s-afr has learned how the car idles by looking at the maf & tps signal during the intial self learning setup... eids is automaticly switched on.

I found this explanation on how eids works on the net...

" Basically, it looks at the MAF voltage, and sees when you lift off the throttle by the TPS sensor. Instead of letting the MAF voltage drop suddenly (and thus stalling the car) it "ramps" it down over a few seconds "

If you have the factory bov hooked up to recirculate, I would switch eids off after doing the self learning procedure of the setup.



Kev.

[GreddyMR2]

Hi,

yes, I hooked up stock bov to recirculate.

I did self-learning.

I switched everything to 0 yesterday, but now I adjusted a bit to run richer (~5%) on higher revs.

Hmm, so you think, if bov is recirculating, it would not turn the EIDS on? Ir so, I will turn it off and will turn on as soon as I install Blitz bov. I hope this weekend

Thanks a lot again!