has been associated with instrumentation for heavy duty diesels
since 1949. Our new PERFORMAX line was created especially
for the diesel performance customer.
PERFORMAX system includes
» Stepper motor gauges with LED lighting
» Heavy duty Electronic Signal Processor (ESP)
» New high accuracy ISSPRO sensors
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a required part of the initial installation, can transmit
data to as many as 17 Performax gauges. Gauges daisy chain
together and snap into pods, so they can be exchanged in minutes
without tools. Each PERFORMAX gauge kit includes sensors,
harnesses and all components required for a typical installation.
PERFORMAX system includes stepper motor gauges, an Electronic
Signal Processor (ESP) and high accuracy sensors. The ESP,
a required part of the initial installation, can transmit
data to as many as 17 gauges.
Each gauge kit includes
pillar, gauges, electronic signal processor, sensors, harnesses
and all components required for a typical installation.
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don't you plug into the OBD port instead of using sensors to
gather data? Many of the systems monitored by PERFORMAX do not have data
available on the OBD system. In addition, some engine chip devices
modify OBD data to alter engine performance parameters. Performax
collects data at the source with ISSPRO's new enhanced accuracy
sensors. What you see on your PERFORMAX gauges is the real deal.
I’ve picked out the gauges I want, what else do I need? For your gauges to function properly, and Electronic Signal
Processor is required in each vehicle to provide the necessary
signal and inputs to the gauge. One ESP is required to function
up to 17 gauges at any one time. Also, a lead wire needs to
be specified (5' R66055 or 8' R66088) for the Pyrometer to function.
All other gauges include the necessary wire harness to connect
the sending units (Included) to the ESP, as well as the connector
necessary to connect to the daisy chain wiring in the cab of
I have heard of other gauge manufacturers having early
failures of their new stepper motor lines of gauges. Since this
is a brand new product, how can I be sure it will be reliable? The PERFORMAX system was subjected to hundreds of hours
of laboratory testing (electrical overload, temperature/humidity,
and shock/vibration per SAE J1810 and J1455). Several dozen
Alpha and Beta test systems were field tested and run for several
months, tens of thousands of miles, and dozens of dragstrip
passes and sled pulls. We tested to failure, then redesigned
and tested again until we were satisfied.
Why isn't PERFORMAX less expensive? For the same reason that a truck costs more than a bicycle.
The honest truth is that PERFORMAX is more expensive to make
than most gauge systems. PERFORMAX is a premium product, intended
for the serious diesel performance enthusiast. It uses the best
technologies available, even on the parts of the system that
are not visible from the driver's seat, like sensors.
Where is PERFORMAX made? PERFORMAX was designed by American engineers and is made
in Portland, Oregon, right in the shadow of Mt. Hood. Most performance
gauges sold in the USA are made in China or India. Not PERFORMAX.
What exactly is a temperature compensated pyrometer? A temperature compensated pyrometer is not affected by the
temperature in the cab. You can race in Death Valley in July
and your pyrometer will still be right on the money. A conventional
pyrometer only measures the difference in temperature between
the exhaust and the gauge head, and that can result in errors.
That gauge head could be 0°F on a cold day, and 200°F on a hot
day (particularly with a dark colored truck and interior). Does
it matter to you if you're running at 1250°F or 1450°F?
How does the plug and play function of the gauges work? Gauges daisy chain together and snap into pods. They can
be exchanged in minutes without tools. If you have a sensor
connected to the ESP, and install the corresponding gauge, the
gauge will recognize its signal and respond instantly. ISSPRO
is the only gauge manufacturer to provide this level of functionality.
What parts come with a PERFORMAX gauge? Each PERFORMAX gauge kit includes sensors, harnesses and
all components required for a typical installation. The only
exception to this is the pyrometers. A thermocouple is included
with the gauge, but the lead wire needs to be purchased separately
in order to get the right length. Lead wires come in 2 lengths,
5’(R66055) and 8’ (R66088) to allow for left or right bank installation
without having too much extra wire.
How many gauges can I run at one time? PERFORMAX is designed to allow up to 17 gauges to operate
simultaneously with a single ESP. Now, does anyone really want
view 17 gauges at one time? Probably not. However, once a sensor
is connected the ESP, you can unplug one gauge and plug in the
next whenever you please. You can literally change the vehicle
systems you are monitoring according to the terrain, the way
you are using your truck (freeway driving vs. racing, for instance)
or your whim.
How can 3 wires run 17 different gauges AND their backlighting? The 3 wires are 7V regulated power, ground, and data network.
The PERFORMAX ESP reads the data from the sensors connected
to it, then sends those messages out on the network. Each gauge
has a unique ID, and knows which message to respond to.
Can I shorten the wiring to the ESP so that it is the
exact length needed for my truck? Yes. ISSPRO sells replacement wire terminals, which can
be crimped with readily available crimpers. You can even shorten
the thermocouple leadwire, as the high-impedance circuitry of
the ESP is not dependent on a specific leadwire length.
Why aren't there any mounting studs on the back of the
gauge cases? We've noticed that many gauge pod designs do not allow conventional
gauge clamps to be used, so we designed latches into the side
of the case to allow them to "snap" into the pod. This also
allows you to pop a gauge out and swap it for a different type,
without removing the pod. It also allows you to readily rearrange
your gauge positions.
Why is the lens flat, when the ISSPRO EV gauge lenses
were curved? The curved lenses were a styling idea from a few years ago.
If you've ever run with both curved lens and flat lens gauges
in your truck, you notice how much more glare the curved lenses