Advice for which ECU to use...
#1
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!
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.
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!
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.
#2
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.
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.
#3
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
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
#6
Originally Posted by C. Ludwig' post='886159' date='Oct 23 2007, 03:57 PM
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
#7
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
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