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Location: /Electronics / ECU/ECU Systems/Big Stuff 3/GM LS Based

Designed as an alternative to factory systems that lacks total control. The BS3 System allows complete control over fuel and timing. Here are some of the features of the LS Systems:

• All Systems include Wide Band O2 Control.
• Sequential Fuel Control for 4, 6, 8, 10, 12, 16 cylinders.
• Capable of driving 16 low impedance injectors-Staged!!
• Individual cylinder fuel and timing control.
• Injector phasing, at the start or end of injection event.
• Configurable Load and RPM axis to enable optimization in YOUR desired range.
• Seamless Decel Fuel Cut-off.
• 2 Step rev limiter
• Auxiliary control of 2 Fuel Pumps, High and Low Fans, and 2 or 3 stage boost control(which can be used for nitrous retards).

 

Additional options include:
Dual WBO2 Sensors
GM Trans controller
DAI and DAE.

DAI:
Stands for Data Acquisition Internal. Simply put, with this option there is no longer a need to carry a laptop computer in the car to record data. Other companies had you using seperate control boxes that had to be configured in order to work properly and if you forgot to plug it in there went the data. Being internal saves tons of headaches, everything can be done while plugged into the same box and the downloaded runs are saved in sequence for future review. One of the best features of this option is the ability to configure what is shown when the log window is opened. If for some reason you what to see a different sensor that you don't normally review, it actually recorded it, and you can view it at any time. With other systems if you didnt configure it to record specific sensors it never recorded them, so you were left wondering what else might have happened during a run down the ¼ mile or spin on the dyno. After a year or two many people have had to replace damaged laptop computers from having to run the laptop inside the car during competition. The DAI option eliminates those headaches and extra costs. We recommend DAI to anyone with plans of ever racing their cars. It is worth the investment.

DAE:
Stand for Data Acquisition External. Until recently you needed a seperate data acquisition system to record sensors outside of the normal engine operating conditions. What this meant was an increased cost to be able to datalog things such as fuel pressure, oil pressure, pan vacuum, driveshaft speed, etc. Leave it to the masterminds at Big Stuff 3 to incorporate all of these thing and more into one information powerhouse of an EFI System. Seperate boxes can become a thing of the past. The DAE Option allows additional data channels to be monitored along side the normal engine parameters for review after a run. The additionally monitored and recorded channels are

• Fuel Pressure
• Oil Pressure
• Pan Vacuum
• Input Shaft Speed (Great for Clutch Cars)
• Driveshaft Speed
• Turbo Exhaust Back Pressure (or use it as a pressure differential for intercooler efficiency on Supercharged Cars)
• Turbo Shaft Speed (or on a Serpentine Belt Supercharged Car to determine belt slippage) 

As you can see this is a wealth of information previously only available through the use of a costly seperate Data Acquisition System. As we have all learned in the past couple of years, the more information that you can acquire the faster your racing program can progress. Please note: The DAE Option does not include any pressure transducers or RPM sensors. HOB Offers them seperately for whatever combination you have.

GM Transmission Controller:
The GM 4L60E and 4L80E Transmissions have become a great option for anyone wanting an automatic overdrive equipped street car. Until recently a seperate trans controller unit was required. As an option Big Stuff 3 decided to incorporate these features in the GEN 3 box. What this means is the end user can have complete control of the GM Trans from the same software and without the complexity or trying to interface seperate boxes. The BS3 with trans option allows full control over upshifts and downshifts in any gear based upon vehicle speed and TPS%. Full control over the torque converter clutch for lockup in 3rd or 4th gear. Line pressure is also fully manipulated in the Bs3 to custom tailor the shift firmness to your liking. Obviously not need for cars with 3-speed autos or manual trans car, but an excellent option for those wanting to have it all with overdrive.

Dual Wideband Option:
This feature is pretty much what it says.  It allows the BS3 system to watch over each side of the motor as a seperate bank.  A very usfull option to have when pushing the HP levels to the extreme.

Note:
All systems come with ECU, 5' Comm Cable, Software, and applicable harnesses. They DO NOT include injectors or sensors. Injectors and sensors are available from HOB seperately.

While this systems is a plug in for LS engines and special COP applications, it is not a direct replacement for Corvette, Camaro and Firebird Applications. The use of this system without the factory PCM in place will not allow the gauges to function in the vehicle.

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