efi, can I run fuel only ecu?
 

Trying to make this as painless as possible. I know the Aussie guys run fuel only on some of their projects.
With the microtech mt4 I read somewhere that I can keep my distributor maybe even get it locked. Everyone else runs a full ecu, but with the lack of places to get a full ecu tuned here I'm kinda shit out of luck.

Not much info on fuel only, so I figure I ask you guys. Keeping it simple sounds good to me. Fuel only ecu and a wideband, can I go wrong with that set up? Any thoughts?
Thanks.

mega squirt.

Yeah i'm looking into mega squirt also, but fuck, i'm going to need to take some days off work to read all that info. I see I can get an assembled one for around $250. But the question is do I have to run a full ecu. Why not just fuel?

Kim, did you just use the F word?:rlaugh:

You should be able to use just the Fuel on the Mega squirt from what I'm told. But then again I'm told alot of things:)

LOL yeah I used the "f" word. I'm so frustrated looking into ecu's So many options but i'm limited to how fast my brain can input all of the information.
cas, map, circuits, pins, enrichments, pulsewidths, triggers, values, tps, egr, spark, fuel, timing, injectors, sizes, downloading, tunning, mega squirt, microtech, redline, haltech, ltx8, lt4, mt4, v1,v2, v3, pcb, processors, code, WTF!!!LOL

Sorry just going crazy. There's a second gen at the local pick and pull. You think it would be odd for me to go with tools and pull it off? Crapp I just got my nails done. Ohh well. Maybe I can grab a big rock and take out my frustrations on a windshield from a civic or something while i'm there. :wallbash:

megasquirt is fuel only. the newer generations of it are getting more advance, i.e. megasquirt n spark. But, with megasquirt, the basic setup, you should be able to do what you need.

Yeah I like the mega squirt. I like the challenge. Think I will go with that. What's the worst that will happen? I blow my engine?

You damned people and your fancy 13b's. Every info I find is for 13b's. Here's another "f" word:
Fuck the 13b!

12A all the way!!! Its cheaper to build too! Hahaha just kidding guys. A little sense of humor :)

Since you are running boost, I would go with the full MS set up for spark control too. That allows you to run a full 2nd gen ignition system with the cas and 2nd gen coils/plugs. Better spark.

Besides, once you get it installed, you can do a write up on it, so I can have an idea what to do when I add MS this winter for the TII swap. lol

:greenchaiYou could always go to the yard and make a vert out of a civic.;) Remember, the more you modify the more you swear.....:dunno:

Isn't the carb enough?

You used one of those weber setups on a 7", right? The code blues tried that with fuel injection and didn't like it very much.

My friend's 5" in his FB is the coolest setup. Big streetports, old style 4 port 13B, '86+ light rotors, 9.4 compression, 3mm apex seals, aluminum flywheel, RB dual pipe exhaust system, normal dizzy, 92 octane gas, Edelbrock 600. That thing screams. It puts my bro's 5" SC powered RX-4 wagon to shame. Of course there are differences in the engine, and the rear end gearing. Plus the extra weight. Only similar things are rotor compression ratio, carb size and SC size. Bro's SC pulley is bigger with a -7 stamp. Friend's is smaller I believe with an 8 stamp.

Yeah you are not kidding. LOL

Jeff, yes I do have the 7" running on a Weber. My problem is that I cannot leave well enough alone. I'm not totally ditching the carb. I'm keeping it and trying out the efi world.

Funny you should mention codeblue's set up because that's what i'm installing, his old set up minus the lower custom manifold that had the two extra injectors. His problem was lack of support on tunning and I think his set up was a bit complicated. But once he got the bugs out he did love it better than his carb set up.

Si I went to dinner to clear my mind. I think it worked because now i'm confident on what I want and decided on what I will be running.

AEM efi fuel pump
GSL-SE gas tank
Boost referenced regulator
TWM tb with 2nd gen injectors and tps
wideband to tune
ecu

Because of my lack of knowledge I think the best thing I can do is remove the supercharger. Then install the efi boostless so I can play around. That way I can get comfortable with it and have minimal damage incase I screw something up with the ecu. That way the worse that can happen is I blow up the 12a. You guys can find me another if I do right? Maybe in that time I could do more reaserch and find a competent person to tune it with the s/c.

Whatcha think?





TWM tb with a couple of 2nd gen injectors

Tuning NA is certainly safer. Go for it.

460 or 550 cc injectors? If you are only running 2 injectors, I think you are going to be shy on fuel. If you are shooting for more than 160 hp, I'd be running 4 550 cc injectors along with the MS. You can always pull fuel out, you can't add it it if it isn't there.

you can go with a SDS fuel only system they make a set up for rotary engines i think that they have for airoplanes too that does spark but i havent been there in some time now

http://www.sdsefi.com/specific.html

Since your car is 12a you can just run the microtech for the fuel and keep your distributor.I dont know if your car is boosted or not but if isnt its even easier to tune the mt4.Theres plenty of places in the city who can tune rotarys and even microtechs in chicago.

I think this calls for my sig.

So true.

Normality_Glitch, you will now see why I posted that comment, here goes:

trochoid, if I had a 13b I would of been able to adapt 2 more injectors to the lower supercharger manifold that I would of gotten have I had a 13b. You damned 13b people get all the good shit! Couldn't I just step up to higher cc injectors? From what I was told since I have a 12a 2 would be ok. I think jayroc succesfully ran his n/a 12a on 2 injectors with 2nd gen cas and megasquirt.

But then that's n/a. Once the supercharger comes into play that will definately be another story. Codeblue was able to find out that I would be ok supercharged with 2 injectors. Hell, I don't think I have another choice since I wouldn't know where else to put more injectors once the s/c goes back in.

puntorotary, ohh, there's places i'm sure that could tune in Chicago. Just finding one that would do it on my car I think would be a problem.

Put the 2nd set in the primary intake runners. They make weld/tig on bungs to do this. Use those as your primarys for better efficiency and flow, the current ones in the tb as secondarys.

That's the easiest way I know of getting around tearing your engine down and using an SE or 12AT center iron.

If you were to go to a larger single pair of injectors, it makes the low end harder to tune, yet the 12AT only had 2 880 cc injectors and 165 hp. Hmmm..... Oh, and a fuel only ecu, iirc.

If you're going to run an ecu you might as well get with the times and run full fuel and spark management. Mapping the ignition is quite easy when you get the hang of it and being able to run lots of advance off boost and gradually ramp it down makes for better driveability.

Get with the times ^^^ LOL Crap it's expensive to get with the times :wallbash:
Yes I will be going with a fuel and spark ecu. I have been reading alot and bugging the crap out of people for info. LOL

I have to figure out what cc injectors to get. I did the calculator and It came up with 2 620cc injectors, but I think Trochoid's idea is dead on to use another set as secondaries to be safe when on high boost. Here is a pic of my new set up. I have another t bod manifold to play with installing 2 other injectors on and I will have to make a custom fuel rail for those. I do have a fuel rail for the bottom s/c manifold but I would have to machine or weld injector bungs on it. Dunno if I want to do that yet, have to source that.

http://i102.photobucket.com/albums/m...FB/Pic3014.jpg