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Top 2GNT Technical Performance/Engine Engine Management Systems & Controllers topic #841
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Subject: "Spark issue at 15 psi with MS running ignition" Previous topic | Next topic
TeamXtremeRSMay-18-05 04:36 PM
Member since May 20th 2003
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#841, "Spark issue at 15 psi with MS running ignition"


          

Well I got the car running great up to 10-11 psi,but when i try to run 15psi, i get a BIG backfire out the exhaust and the car bucks hard, and at the same time, the MS resets. I thought it was from running too rich, but it's not. After some leaning out of the VE map at that pressure, it still did it. I then reconnected the stock ECU to run spark, and it ran just fine, like it always did at 15 psi. I'm wondering if the 3.5ms dwell time is not enough for a strong spark at that boost pressure. Someting just isn't right somewhere. Nate, did you ever scope the stock ignition trigger signals to see what the ECU is using for dwell time? It's either the dwell settings not right, or big tach dropout at that pressure for some reason. I don't understand why the MS resets either when it backfires..The Mitsu ignitor stays really cool at idle, which is why i think we could up the dwell a bit for a stronger spark. Anyone have any insight?


13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)

My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)

  

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Spark issue at 15 psi with MS running ignition [View all] , TeamXtremeRS, May-18-05 04:36 PM
  RE: Spark issue at 15 psi with MS running ignition, AdministratorStar Turbo Talon, May-18-05 04:54 PM, #1
RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, May-18-05 05:03 PM, #2
      RE: Spark issue at 15 psi with MS running ignition, Global Ruler Of All ThingsDarkOne, May-19-05 05:30 AM, #3
      RE: Spark issue at 15 psi with MS running ignition, Teamner947, May-19-05 11:50 AM, #4
           RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, May-19-05 03:00 PM, #5
                RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, Jun-05-05 10:08 AM, #6
                     RE: Spark issue at 15 psi with MS running ignition, AdministratorStar Turbo Talon, Jun-05-05 10:50 AM, #7
                          RE: Spark issue at 15 psi with MS running ignition, Teamdougie2, Jun-05-05 01:21 PM, #8
                               RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, Jun-05-05 01:34 PM, #9
                                    RE: Spark issue at 15 psi with MS running ignition, Teamdougie2, Jun-05-05 01:54 PM, #10
                                         RE: Spark issue at 15 psi with MS running ignition, AdministratorStar Turbo Talon, Jun-06-05 01:09 AM, #11
                                              RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, Aug-01-05 04:02 PM, #12
                                                   RE: Spark issue at 15 psi with MS running ignition, Teamner947, Aug-01-05 04:55 PM, #13
                                                        RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, Aug-01-05 05:30 PM, #14
                                                             RE: Spark issue at 15 psi with MS running ignition, Teamner947, Aug-02-05 09:42 AM, #15
                                                                  RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, Aug-02-05 02:19 PM, #16
                                                                       RE: Spark issue at 15 psi with MS running ignition, rs-pssst, Aug-06-05 06:12 PM, #17
                                                                            RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, Aug-07-05 12:07 PM, #18
                                                                            RE: Spark issue at 15 psi with MS running ignition, rs-pssst, Aug-08-05 07:51 PM, #19
                                                                                 RE: Spark issue at 15 psi with MS running ignition, TeamXtremeRS, Aug-09-05 02:57 AM, #20
                                                                            RE: Spark issue at 15 psi with MS running ignition, Teamner947, Aug-11-05 05:57 AM, #21

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