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Looking to see if/how you can use the flex fuel table for nitrous timing retard. ive used the IAT switcher for a while now but id like to be able to adjust timing across the RPM range. I was looking to see if I could progress a 200 hit by RPM without having to pull 8deg when im only spraying 50%..
dry or wet? the flex table is only used when the flex fuel enabled tune detects alcohol.
to do it that way would require you to be able to vary a signal from some sort of a signal generator, to increase and decrease based on solenoid dc. and this would only work on those that have physical hardware vs virtual sensor. Honestly would take a lot,
your already using iat, just vary the resistance based on the duty cycle your applying to your solenoids and you can increase or decrease your iat temp (increase decrease timing)
this would be easier
if your already using a controller which I assume you are they have ouptuts that can turn on relays to stack resistors
they way I was thinking about using would be for street duty to make it a bit less harsh on equipment. basically how would you force it to go fully into the flex fuel table? The idea is to set the nitrous to progress up based on engine RPM 4000=50% 6000=100% and between those ranges change the timing retard. 4000 would be 4deg retard 5000= 6 deg 6k= 8deg. or something liek that. I dont want the timing table to automatically change timing based on an input signal, theres to much that could go wrong there but to have it activated when you arm the nitrous and force it to think you have 100% ethanol. I dont know how useful this is as it was just and idea. I can see it being a PITA if you want to keep it 100% nitrous after the inital hit and not progress any once you get through the first gear change....
I have it setup with stacked resistors now going to my IAT. i have essentially three timing settings based on which stage I have activated 100hp-150hp-250hp. but these are on/off with window switch. Id like to be able to bring them in progressivelyQuote:
Originally Posted by mbray01
depending on vehicle the alcahol content doesnt really change on the fly like that
you would still have to tell it what to read, via a add on signal generator
hence why I said resistors and stack relays would be ideal
Its what I do on various builds
stack resistors via various relays to gradually increase iat reading and pull timing based on amount being sprayed. its rather quite simple this way
I make a signal generator explicitly for this.
Quote:
Originally Posted by DSteck
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