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BACK
The
Upgrade ECU Page
Upgrade ECUs are defined within
this website as an existing Toyota ECU that has been modified in some way
internally. This ranges from simple rewire to eliminate some
features, to a full re-program by replacing the original Toyota chip with
a programmable chip that contains new updated code.
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The
Toyota ECU
First let us familiarize
ourselves with the Toyota ECU. Here are some of the specifications
of the stock ECU:
Specs coming soon!
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The
"Reworked" ECU
These are companies that
will take your ECU and do something to it other than actually
re-programming the Toyota code.
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 JET
Performance Products
17491 Apex Circle
Huntington Beach, CA 92647
Voice: 714-848-5515
Fax: 714-847-6290
Email: Sales@JetChip.com
http://www.jetchip.com
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JET provides and upgraded
ECU by modifying your existing one. Your ECU must be taken out from
your vehicle and sent in to be modified. The modification includes
changing your FUEL and IGNITION curve to a more aggressive spec.
They will set this curve based on your modifications. This will only
effect the curve and the original programming remains. The boost and
rev limit also remain the same. JET
claims a 20 HP increase.
Price $399 88-93 All Trac
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SUPERCHIPS
1-888-CAR-CHIP
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This is basically a chip that
SuperChips will solder into your ECU that eliminate the boost cut.
This allows the boost to be raised above the 12 psi limit. The
"kit" comes with a valve that will allow
you to raise the boost to about 12 psi. The modification does work,
but most are unhappy with the results as Super Chips as it is advertised
as an ECU upgrade. The horsepower increase advertised is really just
an increase due to the boost level being raised. The popular Zenier diode mod does the same
thing for just a few cents.
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The
Re-Programmed ECU
These are companies that
will actually change the original programming by putting a new chip in the
ECU with a new program that can be updated if needed.
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G-Force Engineering
2311 West 205th St. Suite #102
Torrance CA 90501
(310) 782-8278, Fax (310) 782-1611.
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G-force also modifies your
current ECU. Other than what JET does, g-force goes even
further. They can remove the rev limit entirely and raise the boost
cut to 25 psi. G-force will include proper fuel and timing maps to
17 psi, where the stock ECU only goes to 12 psi. They also disable
some features of the ECU like certain hot/cold conditions that would alter
your performance. Basically G-force unleashes hidden
horsepower. G-force has been dyno tested at 25 additional HP.
Price $750. Group purchase prices are somewhat less. 88-93 All
Trac Application
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 RACELOGIC Ltd.,
6 Little Balmer,
Buckingham Industrial Park,
Buckingham
MK18 1TF
+44 (0)1280 823803 Tel
+44 (0)1280 823595 Fax
email : sales@racelogic.co.uk
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BLITZ ACCESS ECU
This is an ST185 application
only. Blitz makes ECU upgrade available in UK. The computer
could probably adapted to US spec, but probably not worth the time or
expense. This is for Japan spec only I believe. The retail is
£695 and the part number is 15712. RACELOGIC is the Blitz Dealer in
the UK from which you can order this ECU
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 EL PROTOTYPES
elproto@aol.com
410 S. MOTOR AVE. #C
AZUSA, CA 91702
(626) 812-0857
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Little is known about EL
Prototypes upgrade. Their website simply states that they modify
fuel and ignition curves, and raise boost cut and rev limiter. They
might actually just be using a different company to modify the ECU like
g-force or equivalent. The list price is $795 to send in your
ECU. 88-93 All Trac Application
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