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Megasquirt Ignition Advance Maps

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    #46
    I should post my recent map - there are no signs of detonation and the power delivery is very smooth on 94 octane. I am nowhere near 20 degrees advance at 15psi however - being that high resulted in some signs of detonation on the sparkplugs as noted above.

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      #47
      The dyno day was great. I got some nice results on other cars, but didn't have time to get my own car on there. I tuned from 9:30 to 6:45 with pretty much no lunch break.

      Since it was so popular, I already have enough people for the next one. If Lex gets off his ass and gets his engine done, we can both tune the cars and see how they are. I have changed my timing a bit and run more advanced at 18PSI than I am at 10PSI. For some reason at around 10-14PSI and 4500RPM, i can't run too much advanced or it will ping like crazy. That is around maximum torque area as well which makes me think that it might be something to do with coils or plugs. I do have race plugs gapped to 0.028 so it is definitely not blowing the spark out. Only dyno will tell.

      Lex hurry up and finish that engine.
      Omid
      1990 Mazda Protege GTR
      1991 Ford Escort GTR (GT2876)
      1985 Mazda RX-7 GT-1 Race Car (13B PP)

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        #48
        Originally posted by bcrx7 View Post
        Lex hurry up and finish that engine.

        Yeah!!!... hurry up and get those rods so I can put your bottom end together!

        Well, after you fix my MS BP MX-3 first...

        JoN - Automotive Machinist Journeyman/Refrigeration Mechanic Journeyman
        Member of MX-3.com
        1996 Mazda MX-3 RS - Creek Blue Mica
        1993 Mazda MX-3 GS SE - Raspberry... RIP


        Racing BP (Project "Blue" Marlin)... Twin Scroll GT3071R, breaking 30psi at the moment!

        "Do it ONCE, do it RIGHT!"

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          #49
          Lol, so much pressure All in good time, now that I have a second car. The rods should be shipped tomorrow - can't wait for those.

          Jon, we should have your stuff running this weekend - give me a call if you are coming over tonight for the hoses.

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            #50
            soooooooooooooo........

            anyone have some new ignition maps i can try out? :/
            Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
            ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
            Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

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              #51
              I think jacobs timing map is just fine, you guys are running too little timing. I got tuned out to 15 degrees at full boost and i know i could of gone up still quite a bit. You have to keep in mind, that n/a bp's at 10degrees of base timing would be at 33degrees of timing at full load. So for you n/a T guys running piggybacks...you are up there in the timing. As soon as i finish my new car i will up timing and see what happens, Probably cap off at like 20degrees.


              Need Vehicle Graphics, Decals, Headlight/Tail light tint? Visit http://www.graphxsigns.net or PM me!

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                #52
                If setting your timing on a dyno, log to see where you start not making power anymore and then back off a degree or 2 because the car is under heavier load on the road than the dyno. If you have access to a dyno that can brake the car at a certain RPM and certain load with real time view of torque, that would be the ideal way to tune. Dyno pulls that just run through to redline are good to see max power but not good for tuning - you are touching only on a few points of the operational engine map.

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                  #53
                  Originally posted by b-potent View Post
                  You have to keep in mind, that n/a bp's at 10degrees of base timing would be at 33degrees of timing at full load. So for you n/a T guys running piggybacks...you are up there in the timing.
                  why do you think people melt pistons all the time running piggybacks...
                  Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
                  ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
                  Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

                  Comment


                    #54
                    heh, i ran my motor for 2 years on piggybacks and it ran just fine which is why i think timing for sure should be over 20 degrees.


                    Need Vehicle Graphics, Decals, Headlight/Tail light tint? Visit http://www.graphxsigns.net or PM me!

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                      #55
                      werd
                      ---Has ClubProtege helped you in someway? show your support by Contributing--- Click Here---

                      1992- project FE3..... 313 WHP @ 9.3psi




                      I pet my dash when I get into the car..."good car"
                      he actually has a mazda tree, parts grow on it

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                        #56
                        pumping an old thread

                        at 18-22psi here is what i'm running for ignition advance. 500 rpm increments from 3500-6500. seems to be working well, just very minor "salt and pepper" on the plugs.

                        16 14 14 14.5 15.3 16.1 16.1

                        stock gtr compression (8.2:1) with low-mid 11's AFR
                        Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
                        ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
                        Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

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                          #57
                          confused why you dropped the timing the brought it back up again in the higher RPM's


                          -Steve

                          Also so max timing for a BP NA is 33 deg full load? If I read that correctly?

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                            #58
                            ive been told it needs to be dropped a little at peak torque and then brought up as RPM increases.
                            Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
                            ... The first FWD BG with a Toyota E153 transmission conversion in the USA!
                            Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts

                            Comment


                              #59
                              Here's what we're running on our turboed BP Festiva, stock Escort GT motor with a DSM T25, currently at 8psi:


                              Doing some more tuning tonight, we'll see how it works! Any input would be greatly appreciated!
                              '89 Festy $2009 challenge car: Turbo BP swap powered by MSnSE

                              www.cardomain.com/id/doksurf33

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                                #60
                                Originally posted by dok33 View Post
                                Here's what we're running on our turboed BP Festiva, stock Escort GT motor with a DSM T25, currently at 8psi:


                                Doing some more tuning tonight, we'll see how it works! Any input would be greatly appreciated!
                                You can push the timing in the low load section of the map from the 31-32 to 36-38 degrees.

                                Don't be afraid to also push your timing in the 1500 and 2000 RPM sections into the 30s.

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