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One may ask why one should find links to competitor's products on the
Adaptronic site. The answer is simple: at Adaptronic, we want you to compare our
products to those of our competitors. Why? We want you to choose the
Adaptronic over our competitors because it's the best one for your individual
system. If it's not the best one for your technical and cost requirements (eg,
if you require on-board datalogging, or if you're on a really really tight
budget, or if you don't want adaptive behaviour), you would be better off with
another unit.
Incidentally, if you found this page useful and chose not to buy an
Adaptronic, we would appreciate a brief email
explaining why (even a single line such as "needed more analogue inputs for
datalogging" would be helpful).
See the Disclaimer at the bottom.
Entry Level ECUs
These ECUs run open loop fuel control, meaning that they use no
feedback for fuel control. This makes them unsuitable for road use (with
the exception of the UniChip, as it retains the original factory
closed-loop ECU), but are fine for track cars, off-road recreational
vehicles, boats etc. |
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The UniChip is a bit of a misnomer, because it isn't a power chip at
all, it's actually a piggyback ECU. These connect in parallel with the
original ECU and modify the fueling and ignition timing as instructed.
This of course relies on the original ECU being available and mostly
working (eg, if you change cam profile). Because the factory ECU relies on
the factory sensors, if the factory ECU used an air flow meter, this must
be retained.
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EMS have just released a new range
of two budget ECUs; the 8860 and the Stinger.
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A few models and accessories available.
Unlike most other manufacturers, they have price listings. They also have
downloadable wiring diagrams for different applications.
Microtech will be releasing a new range of ECUs in January.
|
Closed Loop ECUs
These ECUs run closed loop fuel control, meaning that feedback from the
EGO (exhaust gas oxygen) sensor is used to regulate the fuel amount. This
correction to the fuel amount is not persistent - ie the fuel map is not
corrected itself; instead a correction is applied to the fuel map.
|
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Another ECU manufacturer, with six ECUs on their website. Many of these
run closed loop fuel control, however some Haltech's don't appear to.
|
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Now up to version 4.4, the Wolf 3D also is available in a
"plug-in" type, which are suited to specific engines, and save
on installation time as there is no wiring to be done. The Wolf 3D ECU
runs closed loop fuel control.
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Another generic closed-loop ECU.
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Closed Loop with Adaptive Fuel
Control
These ECUs below have some form of adaptive fuel control. The
difference between these and simple closed-loop control is that the fuel
correction is integrated back into the fuel map, allowing automatic tuning
of the engine, provided the operator holds the engine conditions steady. |
 |
Link offer stand-alone ECUs as well as boards that replace the factory board inside the original enclosure. The factory
replacement ECUs are limited
to specific vehicles. With a separate tuning module, some Link ECUs can
offer adaptive tuning similar to the Motec.
|
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A higher level ECU, available as stand-alone or as a replacement board
for Mitsubishi or Subaru vehicles. They have an
"Autotune"
(TM) feature, which is the adaptive fuel tuning mode, however this is
extra in cost. This is a true "hands-off" tuning mode, as with the
Adaptronic. The Autronic uses slightly different tuning parameters to
other ECUs - most store the desired fuel injector duration in
milliseconds, whereas the Autronic stores a VE table. This means that you
can select a different injector type or target air-fuel ratio without
needing to retune the engine.
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These are probably the best known programmable ECU. Very flexible and
fairly generously featured, including 512kB of datalogging and versatile
crank angle sensor options. Those in the know say they are the best
around, but expensive. They have a "Quick Lamba" feature, which is
similar to the adaptive fuel control of the Adaptronic, however not
intended for continuous use and must be activated via a laptop, as far as
can be interpreted from the user manual.
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Specifications
These specifications were collected from websites of the manufacturers. There
is a lot more information that could be put in the table, but many ECUs have
these all in common so there would be little benefit. Extra features such as
traction control, boost control, barometric pressure compensation and so on have
not been included. A blank in the table means that the information was not
available. Unfortunately, there are many blanks due to unspecific specification
sheets from manufacturers. A question mark indicates an ambiguous specification,
or one that does not neatly fit into this table.
Disclaimer
- Any trademarks used on this page are the property of their respective
owners.
- Adaptronic makes no guarantee about the veracity or accuracy of these
data.
- Adaptronic has acted in good faith in sourcing and verifying the data on
this page. A copy of this page was sent to a representative of each
manufacturer, with an option to correct or remove any data on the page before
it was made public (an option only two manufacturers took up).
- For updates, corrections, or additional information, please email our technical
officer.
Sources
- Manufacturers' websites linked to in Links and Specifications above, referenced December 2003
to November 2005
- ECU
Comparison, referenced December 2003
Copyright 2002-2006 Andrew Wyatt. All rights reserved. Unauthorised copying of any material anywhere on this site explicitly forbidden unless prior arrangements have been made. Adaptronic is a registered trademark of Andrew Wyatt. Webmaster Jason Broadhurst.
