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  • had an LED related side-project that took over for a little while, but i got it all done tonight...

    nAst1 1.04

    lots of little misc changes were made, but the big ones were me disabling single-fire(until it can be proven to work reliably), adding in the idle VE stuff, added in some datastream stuff for tuning the EGR, swapped out the insane value for calculated airflow and swapped in one that is a little more believable, and another biggie: i originally had all of the BINs using the 4T60 W-body spark advance tables, and i decided to rectify that and now all of the BINs are running their correct table, mostly the 5 speed and certain 3 speed cars were effected by this. also fixed were some labels in the XDF and the location of a few items were fixed as well(couple of IAC tables were listed as O2). something interesting to note: the "converter overtemp" spark advance table? that also doubles as a highway spark adder(i'll have to perma-fix the name in the next release), oddly enough... and should you get into the range of the table adding 0 advance, it will disable lean cruise at the same time... neat little system. another thing to note is that i BELIEVE putting stoich AFR in the cell values of the converter overtemp target AFR table will also disable lean cruise... i need to look into this a little more to be 100% certain though.

    i threw in some rather generic values for the idle VE table(which is disabled by default, just flip the switch in the bottom of the flags section to make it active). didn't add a bit into the datastream to show which table is in use since i wanted this uploaded earlier tonight, but if it's an issue, i can deal with it then, all you have to do is watch your datastream and see if the values it shows are within the range of the idle VE qualifiers.

    speaking of the idle VE quals, those have some pretty loose values as well, i ran TPS and RPM up to the limit of the tables, it would be a remarkably bad idea to set them above the table limits. 5MPH seemed like a decent value as well.

    as for the Idle VE IAC Compensation: no idea where it should be set, so be aware of it. also something interesting to note: i made it a rather "insensitive" adjustment, so don't be afraid to move it around 5 or 10 counts at a time. this is done to achieve greater resolution at the expense of some range. the way it works is that it relates IAC position to the VE that was looked up in the table, and then creates a virtual VE adder that gets combined with the VE from the table and finally used for fuel calcs. pretty slick system IMO, considering how much change a single byte can make, just i have no idea where it would want to be set. another neat trick of it is that if you have it set to 0, the logic will assume you do not have an IAC attached and will not add any assumed IAC count derived fuel. other IAC related stuff would still act as if it were there, but it should work great for this.

    enjoy. now what was the next thing i was supposed to add in???
    1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
    Latest nAst1 files here!
    Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

    Comment


    • If my trans decides to work tomorrow i'll start playing with this latest release.. i haven't been able to do any tuning lately...
      Past Builds;
      1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
      1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
      Current Project;
      1972 Nova 12.73@105.7 MPH

      Comment


      • a thought for alternative(meaning not forced to be used) rev limiter:

        in place of cutting fuel, cut spark down to absolutely no advance(fire at TDC) to cut power delivery severely but still deliver fuel. it won't be as effective in lower gears, but in higher gears it would be quite noticable. i need to look at it more, but it may even be possible to fire ATDC(there are constants in the calibration that are factory setup for 10* ATDC as a limit) if it would be necessary.

        useful for anyone spraying(especially dry), i would think.
        1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
        Latest nAst1 files here!
        Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

        Comment


        • any chance for the optical VSS input to be added? Also, can you save the .ods files as a .xls so us M$ slaves can use them?



          Thanks
          Last edited by Superdave; 06-28-2011, 11:10 PM.
          Past Builds;
          1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
          1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
          Current Project;
          1972 Nova 12.73@105.7 MPH

          Comment


          • my bench keeps getting delayed, but if you can setup yours to simulate an optical signal in a mask that already supports it on your 7730(or whatever you might be running now), and record the MPH value that specific settings cause(and keep that setting) via ALDL, i should be able to simulate it before sending out a testing revision, then assuming the values match up, it can be called a success.
            1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
            Latest nAst1 files here!
            Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

            Comment


            • That's possible, do you have a disassembly for AUJP?
              Past Builds;
              1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
              1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
              Current Project;
              1972 Nova 12.73@105.7 MPH

              Comment


              • AUJP and ANHT.

                i'm going through the ANHT hack now to see what all GM left similar.
                1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
                Latest nAst1 files here!
                Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

                Comment


                • here's a good question: what happens when you hook up your VSS optical output to the ECM's optical input and set the road speed constant to 2K or 4K PPM?
                  1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
                  Latest nAst1 files here!
                  Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

                  Comment


                  • nada


                    I guess old Jbody code might have the right stuff.. 89 ish. I'll have to look tomorrow. Stock V6 camaro code would have it as well.



                    There is a VSS for the 700R4 that has both outputs but it's almost $100. I need to find out if it's stock for some random car and yank one from the JY.. that would solve everything. *edit, '90-'92 Police cars
                    Last edited by Superdave; 06-29-2011, 12:27 AM.
                    Past Builds;
                    1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
                    1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
                    Current Project;
                    1972 Nova 12.73@105.7 MPH

                    Comment


                    • disappointing.... i was hoping some kind of MPH would register, even if it was horribly off...

                      90-92 V6 F-bodies had electronic setups....
                      all of the early J-bodies use an optical setup, but also use a buffer and grounds pin A10 at a rate of 2K PPM...

                      looks like the only code i can even study that was on a 7730/similar was 8D.
                      1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
                      Latest nAst1 files here!
                      Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

                      Comment


                      • Checking back in with a couple of observations and thoughts after running 1.03 for the past month and then some. First, fuel mileage is quite awsome! I've done mainly around town back and forth to work type driving with very limited highway. Lowest observed mileage was this past week with NO highway trips at 24.3, highest was 26.7 roughly 70/30 city-highway. Coming from 19-20 mpg back and forth to work, the increase has been noticeable and welcome. I should have a highway trip next week to see what I can get there, though its been pretty good there anyways, 28-29 usualy.

                        The idle spark changes helped a lot to keep it running steady, still slightly rough, but its always seemed that way. Also, maybe once a week it will just flat out stall as soon as the clutch is put in, usualy after coasting a ways at medium speeds. I have my DFCO hit pretty much right away, and I thought maybe it wasn't catching itself quick enough on clutch in, but I haven't duplicated it yet while trying to make it happen.

                        Last, for me with the bigger 3100 injectors and pressure, I only hit the single/double switchover at WOT for the most part, or if I hang the revs way up, say 4000+ and a decent amount of load. 98% of my everyday driving stays in single fire, and when it does switch, I don't feel the single -> double hit, its the double -> single switch I might feel. For me, single fire works great and I'd think its a big part of my mileage jump, so I'll keep it for now. I might try the new one for something to do later though.

                        Comment


                        • stalling after coasting SEEMS like it could be a DFCO thing, you may want to change up the MAP or RPM settings used to come out of it when the clutch goes in, otherwise, the engine will spin down pretty quickly. "Maximum RPM Decrease in 12.5mSec to Stay in DFCO (KDFCODRM)" would be a good one to check out, maybe drop it down one notch(12.5RPM resolution). alternatively, if you happen to have a clutch switch, i may need to integrate in a check for the switch being depressed and automatically kick out of DFCO, but i'd prefer to have other options checked first.

                          i can't remember what engine you're running off-hand, but the newest spark tables in the 104 release would be a good idea for a 3.1, or since you're running such a light car, the L/N body 3100 spark tables, should you be running a gen3, even though they're meant for an auto.

                          i wouldn't think single-fire would cause a mileage increase, since the same amount of fuel is delivered as double-fire, just at different times.
                          1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
                          Latest nAst1 files here!
                          Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

                          Comment


                          • ALLDATA seems to be failing me now.... it refuses to show the optical VSS stuff for even the V8 90-92 F-bodies...

                            did the 90-92 V6 models use an optical setup? if so, i may be able to rip the code out of some of the $88 files.
                            1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
                            Latest nAst1 files here!
                            Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

                            Comment


                            • 90-92 were magnetic.

                              If i could convert the square wave optical signal into a sine wave and bump up the voltage a little it might work on the magnetic input. I'll work on that this week.
                              Past Builds;
                              1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
                              1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
                              Current Project;
                              1972 Nova 12.73@105.7 MPH

                              Comment


                              • actually, Joseph mentioned something about that in an email a while ago describing what he had to do to get his F40 working with the dakota digital unit and his speedometer...

                                i do have a few DC voltage multiplier circuits on hand(and AC multiplier is basically a transformer), not sure on how to convert square to sine though, that's a new one for me.
                                1995 Monte Carlo LS 3100, 4T60E...for now, future plans include driving it until the wheels fall off!
                                Latest nAst1 files here!
                                Need a wiring diagram for any GM car or truck from 82-06(and 07-08 cars)? PM me!

                                Comment

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