ballitek

I am very interested in using a microtech unit for a 20b project. My questions are....
1. Witch unit will work best?
2. For a better understanding of the microtech unit, how does the unit wire up to the stock 3 rotor trigger?

Any information would be greatly appreciated.

I have used haltech in the past and had to use a set of 8509s to transfered the trigger for the haltech to read it.
I have no issues with haltech, I like the units also.
Does the microtech unit also need this assistance for the trigger to work?

10sec rx7

Hey there,

you will require a LTX-12 to run the 20b properly with leading/trailing split etc.
the microtech will use all the standard sensors and work correctly with out any mods at the trigger at all!

Dale

Evil Aviator

Will the LTX-12 run the stock 20B coil packs?

The Haltech E11 and Wolf3DV4 have 0.004 mS injector resolution. What is the resolution of the LTX-12?

10sec rx7

the LT-12 will run the stock coils and ignaters as far as im aware, i havent played with a 20b before so im not 100% sure,

on my old MTX-8 the resoultion is .05ms the new ones are better than that and they are getting better all the time,

IMHO on a rotor you will never use .004ms, maybe on a piston motor with 800cc injectors you may require that but even a SR20 with 700cc injectors idles and cruses fine with the old microtechs,
i have 1200cc primarys and secondarys and the idle and cruse is perfect with my old microtech

madaz07

thats the diff if it doesnt have a X in it its for stock coils and ignighters and if it has an X it for aftermarket coils as it has the ignighters built into it. right 10sec??

they should now what a SR20 is???

10sec rx7

Thats correct, the X means built in igniters and after market coils, no X means factory coils and igniters.

Im pretty sure they got the SR20's over there, in the 240z which is the same as our 200sx,

HWO

Suzuki G13B GTi motor, T28, 800cc injectors, microtech idle was either too lean and hunting or too rich and fouling, haltech idle was spot on.

ballitek

Thank alot 10sec rx7 and everyone else.
I have heard alot of good things about the Microtech unit. especially with the use with the 20b.

It looks like the project might be underway soon and I will probably have alot more questions.

Thank you all once again..

Evil Aviator

Ah, that would explain why only the drag racers like them. Yes, it does cause problems similar to what HWO described, and I have experienced this first-hand, even on NA 13B street engines. Road racers need better resolution, otherwise the tuning isn't quite right, and you have to choose between being a little fat or a little thin at a lot of the map points. Although HWO's example was for idle control, it manifests throughout the entire rpm and load range of the fuel map. I hope that the new LT units have better resolution.

10sec rx7

hahahah you have been listening to too many people dude, if you cant get a car to idle with that size injectors there is something else wrong!

Bridgeported

And why would you need 800cc injectors on a 1.6L 4cyl using a T28 turbocharger?

10sec rx7

Dude, 1.3L!!

i know the car, it makes decient power but 550cc injectors would have been enough,

Bridgeported

Oops, thought the GTI models were 1.3L. Still, far too much injectors than necessary.

Anthony Rodrigues

I,m with 10sec here all the way, maybe if you cant get that combination to work right you have more than problems with resolution. We have already created finer resolution units, but personally have never had that issue. I am also yet to meet anyone that required those injector to cc scales that have given a damm about fuel costs either. In 20b configuration, I still cannot understand how units that are unable to drive the ignition(with a split) as mazda intended, would even be in the conversation, regardless of their resolution. As we know, there is no point burning the right ammount of fuel if the spark is incorrectly fired. Unless of course if you are that smart you know more than Mazda. I dont!!
Regards-Anthony