I have been working on my 87 T2 project for a long time and I finally am about to get it running. Need some advice from people with similar setups.

I bought a reman from Mazda (beautiful all clean )
ACT Street Strip clutch kit
BNR Stage 4 Hybrid, all the options before going full T04.
S-AFC
4 720cc Greddy Injectors

The only thing I dont have yet as far as fuel mods that I will get soon are:
FCD
Walbro Pump

My question is since I have to break in my motor anyway and I won't really be boosting much at all will my a/f ratio be ok without those 2 things until I am done with break in.

Should I be safe as long as I tune my S-AFC moderately rich.

PS I will keep the stock air cleaner and exhaust to keep boost pressure down until my fuel mods are completed.

Ed

 

You will be ok, first off.

Second, get a cone filter intake.

Next, get an exhaust.

 

You have the same turbo if I remember correctly right?
Whats your whole setup like, fuel and mods?

Ed

 

**

 

Yeah if your not lean I sure wont be.
You have intake and exhaust and only 720 secondaries.
Have you dyno tuned it with the wideband?

Also anyone else have any comments?

Ed

 

Not yet, once I get an exhaust I will. Probably will in a month after my engine gets rebuilt/broken in. But I do have a fmic, which helps prevent detonation too. I have an EGT gauge and it doesn't get near where I'd need to worry either.

 

Thanks
Yeah I think ill be good for now also.
ed

 

just set your S-afc at -15% across the board or so and you'll probably be fine. just stay outa full boost till you get the pump and and some tunning

 

i would break in the engine 1st with mostly the stuff being stock and then migrate mod by mod because if you have issues it will be difficult to solve.

1. break in engine cwith folowing installed stock injectors & ACT clutch & hybrid turbo
2.install performance air filter
3.install injectors and S-AFC
4. install exchast system ( if you have you CAT still in place since this will limit flow)

on mine i had my cat on and was only pushing 4 pounds and with out i was running 14 pounds

 

scott 89 Yeah I think your right. I wont be full boosting for a while anyway because of breakin turbo and engine.

mr_vaughn I aggre with your suggestion however I bought my T2 as a fire car.
My injectors were all toasted so I have to run the Greddy injectors and the S-AFC.
I am not going to mod anything else though until I tune and breakin is complete.

 

You guys thihnk its necessary to tune on a wideband before my breakin is done?

I'm thinking no since I have to go easy on the motor and turbo for now the I can tune properly for full boost.

Ed

 

I got the motor in and I'm breaking it in right now.

Since I have to stay out of boost anyway and I have 720cc primaries won't I run way rich at idle and low rpm?

While I'm breaking in the motor what should I set my
S-AFC at?
Can I lean out idle a bit since the 720cc are suppling more fuel than the 550s were and I'm not boosting anyway.

Can anyone with 720cc primaries shead some light on there settings?

 

I think Scott 89tII answered your question above.

 

To get four 720cc/min injectors back to stock mixtures you'd need to initially set the S-AFC to -24% across the board.

550/720 = 76%

 

Oh so I do need to lean out the whole fuel curve then since my injectors are 24% bigger.

So as long as I stay out of boost I wont run lean with my to4 even with my S-AFC leaned out, right?
I'll try -15% first, it's safer.

I have a good digital AF ratio gauge coming, but I know they aren't very acurate so how do I know if I'm running lean just in case?

 

What should I set my throttle percentages at?
I mean the high-low throttle point percentage.
The S-AFC is preprogrammed at low 10% and high 50% from the factory.

Is that OK?

 

^

 

You know what I say, forget the S-AFC, and get yourself a real aftermarket EMS like the Microtec, or Haltech, if your gonna do something, do it right the first time. Well thats my personal opinion. Also I think your better off going "stock" 550's in the primaries, and the 720"s in the secondaries. And defenitley a FMIC.

 

Dude your post is not helpful one bit.
First off I already have this setup and I need advice on how to set it up and all you can say is buy a bunch of other crap.

Well if I had the money I would buy a Haltech and front mount, smart ***.

How about you keep worthless posts to yourself OK.

Anyone have anything useful to add?

 

^

 

No those percentages are not good. Go with 98 low, 99 high. You see 100 throttle anytime you are accelerating anyways.

 

Thanks Ride.

What about RPM's on the S-AFC.

Are the RPM's way off on yours also?

The S-AFC says I'm at way higher RPM's then I'm really at.

Ed

 

Edomund just to let you know I wasnt trying to be a smart ***. Sorry I didnt mean to offend you in anyway.
I just thought I would let you know that your particular setup is a clicking time bomb waiting to happen. Ive seen alot of similar setups like the one your about do, and the end result is ALWAYS a blown motor. Anyways thought I would give you my MOPO. Ive taken this advice from guys that have been there done that already. The reason im telling you this is so you can actually realize that at the end of doing all this the result is going to be a blown motor anyways. The S-AFC
is only versatile to a certain point. If you dont wanna believe me go ahead, and do as you like. Just ask "Ryde or Die", he's got a S-AFC on his T-II, and he can tell you the same thing im telling you. Not talking **** or anything abut the man, or his T-II but as we speak he has a "Blown Motor". And from what I remember he said he's gonna go Microtech. In other words whats the point of spending your hard earned money on a block,S-AFC,FMIC,F.Pump,Injectors, tuning sessions, and at the end, guess what my friend the end result a blown motor. Like I said if im gonna go through the time, and $$$ to do all that ****, im gonna go aftermarket EMS, because its been proven, and tested time, and time again, its alot better, and more versatile than the Apexi S-AFC. Once again I apologize if I insulted you or offended your intelligence in anyway, as that was not my intention. Hope everything works out for the better. Peace

 

I realize the S-AFC tuning is very limited. Thats a given.

I researched my setup long before I bought it.
It was the best for the money I had to work with and the horse power I wanted to reach at this point.

Why would I end up blowing my motor if I tune it correctly and take care of my car just because I have a S-AFC. That is stupid logic.

The S-AFC has it's place as well as a Haltech has it's. The amount of fuel I have (4 720cc) is plenty for my setup.

The reason I said your post was worthless because I asked for help with my setup not advice on what setup to go with.
I already picked my setup!
It's not like I can take back all my **** after I alreadly installed everything.

Thats the reason I often get upset with this forum.
There is more than one way to tune. Not everyone has to go full Haltech just for a few extra ponies.

If the S-AFC is used correctly and you realize it's limits there is no reason not to use it in the right situation.

Ed

 

Again anyone have anything useful to post?

Whats up with the RPMs on my S-AFC?
Are they all like that?