Ok I bought the microtech from oemfd and he told me it's off an FD. I got the unit installed but couldn't figure out how to set the input trigger and output trigger setting. The unit has 30% on the input, so is this right? Also the unit says 4cycle 3bar( old unit) with external map sensor(no nipple on the unit itself) but should it say series6 instead?

I installed alot of microtech but this is the first time I'm doing the ltx8 with external map sensor. microtech efi doesn't have the wire diagram for this unit either

 

screen 34 has the ID ( come up when you turn it on )
FC ones will come up as "13bt version something, sequential ( if LTX ) " cant recall what the FD one comes up as

the 30 /70 **** means you have the ignition set up in duty time mode in the screen 31 dwell setup
most of the time you see dwell base is when used in stock igniter and coil setups
( ie,, on LT models, not LTX )
most ( FC's with LTX ) will have dwell instead set up as fixed time base, around 3.5 ms, i expect same from the FD coils
config = 4cyl is what most rotaries will be set to

 

config = 4cyl
input trig = positive
output trigger = negative
dwell type = time based ( ie, not DUTY DWELL )
dwell = 3.25 ms ( 3.5 is used on higher boost examples )
pump dwell = 3.5 ms

these are the LTX/MTX settups for 13bt ( sequential ignition with 4 x bosch HEC coils )
FD will be the same ( if set up with 4 HEC coils and sequential operation )

 

and for LTx8 on an FD-
http://www.microtech-efi.com/downloads/14.pdf
note dwell is 2.75 ms for the FD ( and the rest of the settings are the same )

anything up to almost 4 ms is acceptable
with these HEC coils , too much dwell period and they will split coils, too little and the spark will blow out under boost

 

I know the 13b are config 4 cyl but when you power the computer it says 4cyl 3bar on the screen. Usually all the microtech I use tells you on the screen what it is flash for.

 

well, it is telling you it needs the external 3 bar map sensor, has its map load axis points adjusted to suit
and is for a 4 cyl
which could mean rotary , could mean 4 cyl and may even by for a rotary in batch fire mode [ non sequential mode ]
the screen ID doesnt actually go into a lot of detail ( it only has a handful of characters )
and so you should check that screen 31 setup is still set for "sequential" firing
if it is , then it looks like a 3 bar modded 13bt map flash

what will not be so apparent is if it has the trigger angle software set for 24/2 ( 13bt CAS) or 12/1 ( FD pickups )
and while this amounts to the same thing in other ecus,, in the micro the trigger angles are fixed
and since you cant twist FD pickups to calibrate them ( like a 13bt CAS )
then it needs to be setup from factory for the correct pickup tooth and angle offsets , hidden in the software ( user cannot adjust them like other ecus )

if you know for sure it came from a working FD, you don't need to concern yourself
but it is something you have to be aware of when buying a second hand microtech
( that such things are locked out from the user and it needs to be factory set for the end application )

 

On the main screen it have 4cyl 3bar v1.6
On screen 31 it has:
4cyl/r
firing sequential
map sensor
dwell=time base
teeth Cas= 24%
TD Cref Cas= 14%

Is this for a 13b rotary or oemfd sold me a crappy microtech that's for something else?

 

Let me know if the setting is correct or is it for a rotary?