SMT8-L - THE SMART TUNER 8 LITE PIGGY-BACK SYSTEM

SMT8-L Smart Tuner Lite Piggy-back System

Download the SMT8-L Technical Manual

Download the LetRipp II Software User Guide

Download Demo Software

The SMT8-L piggy-back system also follows in the footsteps of the SMT6 and SMT7 products, just like its big brother the SMT8, but with un-paralleled performance and a quantum leap in technical innovation. This is all possible with the latest 16 bit DSP processors. The SMT8-L is the first piggy-back that offers you the capability to do DUAL AFR tuning, as well as ETC (Electronic Throttle Control) tuning.

The SMT8-L has two complete maps. Which means you can switch between two different tuned maps while driving. It is possible to have one map for economy, the other for performance. Or use the maps for different weather conditions. The Maps can be switched from the hardware input. The parameters and calibration are not switched. The maps can be 'locked' into a fixed position from the PC for tuning and downloading.

The SMT8-L piggyback is applicable to:

Tuning, Auto tuning, Dyno tuning, Auto tuning, Chip Tuning, Tuning cars, Performance tuning, Chip Performance, Engine performance, Auto performance, Computer Tuning, Piggyback tuning, Vehicle tuning, Computer ECU, Fuel consumption, Increasing Horsepower, Eco tuning, Fuel Injection, Turbo charger, Engine tuning and many more.

The SMT8-L can drive one extra injector (13 ohm) for supplementing fuel at high boost. The extra injector can be controlled via Throttle/RPM, AMP, Engine and Air temperature maps. This allows for precise fuel delivery at boost conditions. This feature is very popular with turbo and supercharger installations.

The SMT8-L is the first Perfect Power piggy-back product to allow ETC modifications. The ETC flap control can be modified (re-mapped) with the SMT8-L. It takes some skill to negate the effect of the ECU traction or launch control, but if you want to spin tyres then this is the way to go!

The SMT8-L product is currently available in two kits: the SMT8-L User Kit and the SMT8-L Kit.

SMT8-L-UKIT includes:

1 x SMT8-L Light Controller
1 x SMT8-L Tuning Harness
1 x USB Communication Cable
1 x CD with LetRipp Software and Manuals

SMT8-L-KIT includes:

1 x SMT8-L Light Controller
1 x SMT8-L Tuning Harness

SMT8-L: FEATURES & BENEFITS

Feature	Benefit
System definition	Tailor the unit to your application
Ignition advance/retard limits	Restricts ignition modification range
Start second specification	Prevents action after power-up
Analogue Upper/Lower limits	Prevents analogue over-ranging
Frequency modification	Tune a frequency airflow meter
Frequency upper/lower limit	Prevents frequency over-ranging
Boost control	Controls the turbo boost
Boost loop gain parameter	Set the Boost control gain
Cut protection action	Signal cut when protected
Retard protection action	Retards ignition when protected
Modify protection action	Proportional protection
Frequency protection	Protects a frequency signal
AMP protection	Protects an AMP signal
Engine Temp. Protection	Protects the engine temperature
Air Temp. Protection	Protects the air temperature
RPM protection	Protects RPM
Time before protection action	Specify time before action takes place
Ignition window	For not so perfect crank signals
Analog modification channels	Allows you to map three engine signals
Wide band AFR modification	Allows one wideband AFR tuning
Narrow band AFR modification	Allows two narrowband AFR tuning
External display specification	Tailor your display needs
TPS calibration	Adapt to your TPS sensor
TPS direction	Specify Up/Down direction
Engine temp. Calibration	Two-point adaptation to your engine
Air Temp. Calibration	Two-point adaptation to your engine
AMP calibration	Linear adaptation to your engine sensor
RPM calibration	Set the operating range
External display testing	Verifies the external display function
Teeth per injection setting	Operates the external injector timing
Teeth per crank turn	Adapt to your crank trigger wheel
Edges per crank turn	Adapt to your crank trigger wheel
Ignition map with 384 points	For three dimensional Ignition tuning
Ignition AMP map	Provides AMP ignition tuning
Ignition Engine temp. map	Provides Engine temperature ignition
Ignition Air temp. map	Provides Air temp. ignition tuning
7 steps per degree ignition	Very fine ignition replication
Injection map with 384 points	Two maps for two injection activation
Injection AMP side map	Provides AMP injection tuning
Injection Engine temp. side map	Provides engine temp. injection tuning
Injection Air temp. side map	Provides air temp. Injection tuning
Analogue maps with 384 points	For fine tuning of two analogue signals
Analogue AMP side map	Provides analogue AMP tuning
Analogue Engine temp. side map	Provides analogue Engine temp. Tuning
Analogue Air temp. side map	Provides Analogue Air temp. Tuning
Frequency or PWM tuning	Both signals can be tuned
Frequency map with 384 points	For fine tuning a frequency/PWM signal
Frequency AMP side map	Provides frequency AMP tuning
Frequency Engine temp. side map	Provides frequency engine temp. tuning
Frequency Air temp. side map	Provides frequency air temp. tuning
Boost basic PWM setting	Two PWM settings for different loads
Boost air temp. map	Different PWM settings for air temp
Boost Target map	Precise boost target control
Manual map switching	From the dashboard
PC map switching	For loading set ups into different maps
USB 2.0 communication	Communication and optional power
Built-in factory test	With dates and results
Administration text field	For saving manufacturing data
Dealer info text field	For dealer identification
Branding text field	Branding information
Password text field	Access control
Maximum RPM recording	User retrievable recording
Maximum Engine temp. record	User retrievable
Maximum Air temperature	User retrievable
Maximum AMP recording	User retrievable
Fault indication on all major items	Easy installation and trouble shooting
Re-flash enabled	Upgradeable in the field
Comprehensive help text	Easy understanding without manual
14 point hardware test procedure	Tests every hardware function
Engine real-time data	For monitoring and display

Frequently Asked Questions

What do the values of the SMT8-L's ignition map actually mean on the engines timing?

The SMT8-L doesn't know what the engines timing is but it can advance or retard it. Positive values in the ignition map will advance the timing and negative values will retard the timing. Any value used will be added or subtracted from the base ignition timing. Zero entry will be the stock or base timing.

When I use the Smt8L to control the boost on my turbo car the engine light keeps coming on and the error code is about the N75 valve how do I fix this?

The ECU was controlling the N75 valve but now you have cut the wire to the N75 valve so the Smt8L can control it directly. What you need to do is wire a 1 kilo ohm quarter watt resistor onto the ECU wire and onto switched 12 volts. The reason that this needs to be done is because the ECU is monitoring the return 12 volts from the N75 when it is not in use.

Am I able to modify the ETC signal with an SMT8L piggy-back?

Yes you are able to modify the ETC signal. There are a few types of signals that the Smt8L can modify, refer to the manual on how to set it up for your type of ETC

What is ETC?

ETC means “Electronic throttle control” otherwise known as drive by wire. The throttle doesn’t have a cable attached to the pedal. When you push the pedal the computer opens the throttle.

END FAQ

Add comment

JComments