If you have anything that already corrects fuel, you'll either need to zero it or not use the ISAC correction feature. You dont want two things trying to correct at once. What I did on Shane's car is get the MAF Pro close on fueling and then lower the lean correction limit to 0 and leave the rich correction limit alone. Truth be told if you're running an engine management system with alcohol, you really dont want the wideband correcting to begin with because once alcohol starts going into the engine, the AF is going to drop like a stone and when that happens, your engine management system is going to pull all the fuel it can back to it's limiter.
But to answer your question, yea, you set up your curve first, so say, bring the system on at 2800 RPM, 4.0V on your TPS and 8 PSI with an initial turn on of 25% initial flow rate. Then you add in % of enrichment per PSI, I think I have Shane's car at 3.5% per PSI so at 24 PSI, that's 81% flow rate. From there you can tweak the sliders to make the curve not linear. You can take some alcohol out when the car is spooling up and then add more back where you need it.
Keep in mind too, with this system, you can run two pumps in either dual mode or staged mode. If you run them in dual mode, it will run them both at the same flow rate. If you set them up as staged, it will max out one pump and then start to bring on another pump as the first pump reaches 100% flow rate. This is useful if you wanted to run two different size nozzles and bring the second one in later.
The box does all kinds of other stuff too. It will drive a shift light, has 2 built in window switches for 7th injectors or other things you could do with it like opening or closing a solenoid if your alcohol system has one.
We built this box to have a lot of expansion capability. There are multiple inputs and outputs so really there isnt much we can't do with it. Something we're kicking around right now is adding EGT functionality as an option to wideband. Essentially set up your target EGTs and the ISAC will control alcohol delivery to try to get to the target EGT. This is how the KAM engine management system we have on the BWR car works. Each cylinder has its own EGT probe and the engine management system will correct each cylinder back in real time to keep the temperature where you set it. This should be just a software upgrade as well.. we really thought ahead with the hardware so it wouldnt need a bunch of revisions. There hasnt been anything Ive called Bob about and said "Hey, do you think we can make the ISAC do ____________" that he hasnt figured out a way to work in. We've discussed EGT control, traction control, data logging was an afterthought as well but Bob built the device with enough memory to do it so it was no big deal to add it in.
