Leeroy_25

After having some problems trying to time my engine I was advise to check the ECU setup 31 screen to see what the Input and Spark Trig settings were. The manual says both should be +pos. However Spark Trig is set as -Neg on mine and the other option show SER4. No option for positive. Can any other 20B owner with Microtech confirm if it should be on SER4 or if it is fine where it is?

Will post in ECU section as well of course but figured it might be more 20B specific!

Thank you
Lee

stickmantijuana

iTrader: (1)

Maps matrix
Config 6
Firing sequential
LOAD MAP sensor
DWELL time base
Input +POS
Spark IGBT
Timing chk OFF
RPM_on 2500
Trim#1 0
Trim#2 0
Trim#3 0
SHIFT 9750 dash

Leeroy_25

IGBT? I don't have that option. Just negative or SER4. What other options does yours show for Spark trig please?
Thanks
Lee

stickmantijuana

iTrader: (1)

Did you buy your ecu used? when you bought it, did you tell them this is for FD rx7? I know that the SparkTrig will say weird things if it's configured for honda, toyota, nissan, or whatever. Mine is configured for FC CAS. I don't know what it should say for FD or others. maybe others can chime in.

Leeroy_25

Bought a running engine in a donor car with ECU. I am 20B so should be set for FC CAS too. I read quite a few posts on here and have seen SER4 and NEG for this setting on 13b FC but none that mention IGBT? Strange. Going by that though I would guess it should be set as SER4 most likely. If this is on your LTX16 it may be different I guess. Thanks for looking.

stickmantijuana

iTrader: (1)

I'm not sure if I'm getting your entire situation. Microtech is configured for single CAS-type. If you bought it with 20b CAS or FC CAS, it will only work with 20b cas or fc cas respectively (I believe). If you throw FD reluctor ring to it, it may need reconfiguration by factory. The only MT ECU that is reconfigurable by the end user is LT-16C from what I was told. People had issues buying used LTX12 for FD thinking it would work on their FC or 20B. It needs to be reconfigured by factory. If you're heading that route, you'll be better off buying a correct ECU and selling your old one. If it came off running engine, I would run the same timing setup. If it ran with FC or 20b CAS, I wouldn't try to run FD wheel with it. and I'm not sure if that's your case. sorry if I'm off. I'm sure more knowledgeable members can chime in.

As for timing designation SER4 or IGBT. I'm not sure what to make of it. All I can say is that my LT-16 clearly says IGBT and it works with FC/20B CAS. Maybe contact microtech support?

I know it can be frustrating, and to be fair, although microtech is little unfriendly in terms of initial configuration, other ECU's aren't free from troubles. It will run your engine well. Sounds like you're super close. It's probably few more things until you're grinning from ear to ear on highways and getting thumbs up at every intersection from your exhaust note lol.

Leeroy_25

Thanks for the reply... I maybe confused you somewhere. I am running 20b with 20b CAS in it. Not FD sensor. I am using FD pullies and auxiliary stuff hence I used the FD trigger wheel with 20b timing marks added. I have read on here 13B FC users having setup of SER4 and some with NEG also! Does not seem to be consistent. Hopefully I will find the answer soon. I am running standard 20b coil packs as far as I know. I think that might make a difference.
I will see if I can get an answer from microtech. I tried once before and got nothing!
Cheers
Lee

Banzai-Racing

iTrader: (11)

Sounds like your Microtech may not be configured to run a 20B. My page 31 is the same as listed above with either IGBT or Neg as the option for spark, set on IGBT. Using the X6 igniter and 6 stock trailing coils.

Leeroy_25

I have still not heard back from Microtech. My LtX-12 has built in Ignitor so does not have the x6 ignitor module with it. Looking on the website IGBT is for use in conjunction with the x4 or x6 modules so I guess it is to be expected mine does not have that function. Whether it should have something other than SER4 I don't? Can I harm anything trying to change the setting do we know or is it best to try and check with Microtech first? Are there any other settings I can look at to see if my ecu is co figured for 20b or not? Or maybe part configured!? It does run after all and pretty well on the face of it.
Cheers
Lee

Banzai-Racing

iTrader: (11)

Is your config set on 6 cyl?

Leeroy_25

I will check tonight.. I think so but maybe not.. Surely it wouldn't run if it was set on 4? As it would not have enough outputs for injectors and coils?
Cheers
Lee

Leeroy_25

ECU is set for 6 clylinder. Here are all the current settings:

Setup Screen 31
Maps – normal
Config – 06clyd
Firing – Sequential
Load – Map Sensor
Dwell – Time base
Input Trig - +Pos
Spark Trig - -Neg
Timing Check – Off
RPM on – 4500 Log
Map_On – Off Log
Sample - +01 Log
Spare – +00 Log
Shift – 7000 Dash
Water – 99C Dash
Air_Temp – Off Dash
Boost – Off Dash

Cheers
Lee