Having paused work on my daughterboard for the moment I was considering just going ahead with the piggyback idea for fueling for the time being. But then i struck a problem. I'm fitting it to a 3sgte which has a flapper AFM for fuelling (which i was obviously trying to remove). If I remove this will the stock ECU have no idea about engine load and thus not be able to set the timing correctly?
J
Piggyback / timing issue
Moderators: jsmcortina, muythaibxr
If you are retaining the ECU to control Ignition Timing ,
Yes ,
you must keep the Flapper in place .
You can still use MS with the Flapper in place but it does create some
air flow restriction .
...................Jim
Yes ,
you must keep the Flapper in place .
You can still use MS with the Flapper in place but it does create some
air flow restriction .
...................Jim
'95 GM 4.3 Vortec V-6
Single Plane Intake w/ported GM Throttle Body
Ported Heads , stock roller cam retarded 8 degrees
MS-II 2.6 , V-3 board , MT 3.0
EDIS ignition , Innovate WB 02
250hp , 28mpg @60mph in a 2 ton wagon
Single Plane Intake w/ported GM Throttle Body
Ported Heads , stock roller cam retarded 8 degrees
MS-II 2.6 , V-3 board , MT 3.0
EDIS ignition , Innovate WB 02
250hp , 28mpg @60mph in a 2 ton wagon
Should have updated this thread really 
Sorry! Its running now, seems OK except its holding the idle open when the MS has the injectors for some reason. Thread if youre interested...:
http://msefi.com/viewtopic.php?p=119977#119977
Sorry! Its running now, seems OK except its holding the idle open when the MS has the injectors for some reason. Thread if youre interested...:http://msefi.com/viewtopic.php?p=119977#119977