new option for 7mgte coils?
- Thread starter williamb82
- Start date
pics are here. boots just need to be trimmed shorter is all. no big deal
http://forums.celicasupra.com/showthread.php?t=42551&page=5
ill post pics of mine when installed.
http://forums.celicasupra.com/showthread.php?t=42551&page=5
ill post pics of mine when installed.
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williamb82;1369150 said:
I missed this before, but no, none of them are smart igniters. All are ECU-controlled dwell, as are most newer igniters.
Jeff
how does the ecu control dwell to the coils with this ignitor? it has 6 inputs which are neg triger. then 6 outputs which are also neg trigger. i thought the purpose of the ignitor was to charge the coils? if the ecu is controlling dwell why doesnt it just fire the coils directly?
The basic function of an ignitor is as a power transistor. This keeps high current out of the ECU and most of the wiring harness. Smaller transistors can be used in the ECU case and smaller wire used throughout the harness.
Dwell is how long that power is applied. That can be controlled by the ECU or with a little bit of logic in the ignitor.
Dwell is how long that power is applied. That can be controlled by the ECU or with a little bit of logic in the ignitor.
will this camry coils work with the 7mgte igniter ???? also if the answer is yes will modifyng the stock harness for two stock igniters will do it as using the (wasted spark signal) of each igniter one signal per coil to make it work for the 6 coils ???????
thanks in advance for the advice ....
very interesting thread
thanks in advance for the advice ....
very interesting thread
williamb82;1369820 said:
Charge is started on the rising edge of the signal wave, spark is triggered on the falling edge. The time between those two is the dwell.
The igniter can handle much more power than the ECU can.
Jeff
ok, well i didnt get to put them in today. got paid to pull a trans on a truck for a friend and change the throwout bearing and rear seal etc... making money was more important. lol.
got the camry individual coils installed. i just went ahead and wired up the 2nd edis6 module tonight. works good. no more spark blowout at upper rpm's. i want to run a datalog to see if the ignition has smoothed out. it feels like it has. i dont have any more random pops either during cruise. heres pics including how i had to mod the boots and the internal metal thing. i tried using the camry ignitor triggered by a single edis module but it didnt work. the camry ignitor requires a positive trigger, not negative. so just used 2 edis 6 modules in parrallel
the boot is rubber and it comes off. the conductor snaps inside the coil. i put that on the coil, then the rubber boot. in going to try and find some springs so i can use the part that snaps on the coil better and fit springs inside of it. this way they just push against it tight and it doesnt "click" on.
I'd just like to say that looking into this further, it appears that while the waveform input to the igniter does require a certain dwell time, the igniter still does control the dwell of the coils itself.
Which is somewhat strange, haha.
Jeff
Which is somewhat strange, haha.
Jeff
does the camry ignitor require a 5v trigger? i tried it with a neg trigger and it didnt work so im assuming it needs the 5v trigger. i got the coils working regardless as i just wired up a 2nd edis module as i mentioned before. it pulls to redline just fine and the coils run cool so doesnt seem to be a problem with the dwell the edis is using at all.
Jeff Lange;1372951 said:
You're correct. It (dwell controlled by ignitor) does seem strange until you look at the evolution of Toyota's ignition and consider the capability of electronics during the same time period. Also keep in mind the IGF function.
Why they stuck with it and the multiplexed setup are good questions when it did not save on wire unless, again, it was due to lack or cost of CPU processing power (ability to keep all three channels in sync or needed a constant RPM signal to calculate dwell vs deriving from three independent signals). Why they apparently went back to wastespark on newer models is confusing too. Was it cost or did they really find that wastespark was as good, possibly due to better coils?
Do we know for certain that any of the ignitors do not control dwell? Looking at my AEM EMS maps now it appears even the 6ch 2JZ-GTE ignitor controls dwell.
any diferences between the jz and the camry coils ???:1zhelp::1zhelp:
will the camry coils will work with the jz ignitor or with a pair or 7mgte ignitor all this with the stock ecu ????:1zhelp::1zhelp::1zhelp::1zhelp::1zhelp::1zhelp:
please someone answer my question....
will the camry coils will work with the jz ignitor or with a pair or 7mgte ignitor all this with the stock ecu ????:1zhelp::1zhelp::1zhelp::1zhelp::1zhelp::1zhelp:
please someone answer my question....
they should work with 2 7mgte ignitors or with a 2jz ignitor. im using them with 2 ford edis 6 modules currently. no issues.
on a side note. i found out those other 3 coils i grabbed will be able to use the is300 wires. so we will prolyl try them out on my friends 7mgte with stock engine management. ill post back once we have done that alsol.
on a side note. i found out those other 3 coils i grabbed will be able to use the is300 wires. so we will prolyl try them out on my friends 7mgte with stock engine management. ill post back once we have done that alsol.