Anyone have good experiences with particular ECU? Excluding Microtech, I know they work, I just hate the ignition maps: Interpolating 2Dmaps look like a poo way to tune to me, I prefer a 3D table which I can enter values. Also, I prefer to have a split map or separate leading and trailing maps, as it makes better drivability I find



Threfore, I am looking at:

M600 Motec - Expensive, but works well

EMS Stinger - Inexpensive, but no split supported. Leading and trailing fire together. I emailed about 8860 and they dont support rotary on that ECU eben though it is the "Motorsport" one.

Microtech LT12s - Will work but am not a fan of them.

Haltech E11v2 - Have used them... not a big fan but might go that way yet.



Have yet to check out Wolf3D, and a few others.



Any suggestions?



The car in question is a series1 RX7, all mounts and FD Gearbox are in, doing driveshaft at moment, then fuel system and ECU... then skids! https://www.nopistons.com/forums/pub...#>/biggrin.gif



running NA, A series block (number 666 lol) and will PP it when it goes pop. Not likely to turbo it due to being A series.



Thanks.

I'm using the Haltech E11 v2. It was recommended by Gotham Racing and it works really well. I didn't do the install on this but my understanding is it's not too difficult. Good support and maps are also available.



Had the Wolf 3D but don't go this route. Although the unit is very easy to use, zero (and I mean zero) support is available in the US. Most tuners don't work much with the Wolf either.



My advice to you would be to find a good tuner for the car and go with whatever he recommends. That's pretty much what it comes down to. And I'd also have the car professionally tuned. Makes a world of difference.

EFI / Stand-alone ECUs

There are a number of stand-alone ECU systems out there that can fire and control a 20B 3-rotor engine. Mazda went with an independent trailing split to decrease emissions. With that said and done, let us analyze out options.



If you do use the stock ECU, at minimum you're required to use the stock Cosmo 20B coil packs, which are not very easy to find. On "front cuts", they should be intact, but most imported 20B's do not have them. The Cosmo 20B coil packs are normally mounted on the fender area, so they are not usually included with just the 20B long block.

[Haltech E11 with all options - $2,000]



Haltech

E11

http://www.haltech.com Electromotive

TEC3 6/12

http://www.directignition.com Microtech

LTX12

http://www.microtechefi.com/ Wolf3D

v4.0

http://www.wolfems.com.au/home

Fuel map

resolution: 32 RPM points

RPM points adjustable

default every 500RPM

16,000RPM maximum

two numbers define fuel curve slope 16 RPM points

RPM points adjustable every 125RPM

16,000RPM maximum



Fuel injection

resolution: 6.4µs or 0.0064ms

32ms maximum

1%

0.001ms finest resolution

0.003ms

Fuel injection

modes: Batch

Full sequential

Staged

Full sequential

Staged

Full sequential

Staged



Ignition map

resolution 32 RPM points

RPM points adjustable

default every 500RPM

16,000RPM maximum

8 x 8 to 16 x 16 16 RPM points

RPM points adjustable every 125RPM

16,000RPM maximum



Ignition timing

resolution: 0.1°

60° maximum advance

1° 0.35°

Ignition input

timing accuracy: 1/8°

Ignition input

types: Stock Mazda CAS

others possible Motronic 60-1 required Stock Mazda CAS

Ignition output

timing accuracy: ±0.1° 0.25°

Load sensing: MAP

TPS

MAP + TPS

MAP

MAP + TPS

MAP

TPS



MAP sensor

options: 1bar GM remote, up to 0psi

2bar GM remote sensor, up to 15psi

3bar GM remote sensor, up to 30psi

Higher boost sensors available

1bar GM remote, up to 0psi

2bar GM remote sensor, up to 15psi

3bar GM remote sensor, up to 30psi

Internal sensor, up to 23psi

External remote sensor configurable



Rev limiter: main:

aux:

Fuel or ignition cut, selectable

Primary: 1,000RPM to 20,000RPM

Aux: 1,000RPM to 20,000RPM



Fuel map

compensation: Cold Start Prime - 32 points

Coolant temp - 32 points

Air temp - 32 points

Battery voltage - 32 points

Closed throttle - 32 points, selectable

Full Throttle - 32 points, selectable

Individual fuel injector trim

Starting/cranking enrichment

Accel pump enrichment

Battery voltage

Individual rotor trim



Ignition map

compensation: Cranking - 32 points

Coolant temp - 32 points

Ait temp - 32 points

Coolant temp

Air temp



Fuel injection

drivers: 8 discrete

4A/1A max per channel

additional from extra ouput channels possible

6 discrete

4.4A/1.1A max per channel

6 discrete

Ignition drivers: 6 discrete 6 discrete

9A max per channel

6 6 discrete

Extra outputs: Up to 9

PWM or logic (ON/OFF) capability

4 general purpose outputs

low-current

pull-to-ground

Channels 1 & 2 have PWM capability

All have logic (ON/OFF) capability

2 auxiliary outputs

1amp maximum

pull-to-ground



PWM outputs 4 discrete See above - Channels 1 & 2

Idle air control

outputs: 4 dedicated for 4-wire stepper motors 4 dedicated for 4-wire stepper motors

Miscellaneous

outputs: 1 spare output

logic (ON/OFF) capability only



Extra inputs: 2 auxiliary inputs 4 general purpose inputs

0-5VDC analog

2 auxiliary outputs

Configurable to 2 auxiliary inputs



Knock sensor: No Yes

O2 closed-loop

control: Yes Yes Yes

Decel fuel

cut-off: Yes Yes

On-board

Datalogging: 448KB memory

selectable 1Hz, 10Hz, 200Hz

1MB memory

adjustable 5Hz - 100Hz



Datalogging

to disk: Limited to disk space Limited to disk space

Communcations: Laptop Laptop Laptop

Hand controller



Miscellaneous: ECU diagnostics LED

ECU cooling fan

ECU diagnostics LEDs

FYI - if you need coil packs, I have six GM LS1 coils available. They are an upgrade to the stock 20B coils and provide more spark. PM if interested.

If you do decide to go Haltech or have any questions concerning the Haltech drop me a note.

Do you know anyone near the Davis/ Sacramento, CA area?

Thanks

We are running the Electromotive TEC3 6/12 in our shop's peripheral port 20B 3-rotor FC and have had nothing but success with it. We run 6 LS1 coils for ignition (split ignition works, BTW), 3 primary and 3 secondary gasoline fuel injectors, as well as 3 methanol fuel injectors. This is a pretty extreme application and the car runs perfect with this engine management system and the tune we've given it. We recently installed a TEC 3R (fewer outputs) in a customers first gen after swapping in a 20B, and it runs like a factory car, except with twice the power. The Electromotive units can control the most wild setups, or the most tame setups. Take a look at their systems! www.getfuelinjected.com