Haltech Injector pulse for on boost
#1
Apex seal blower
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Injector pulse for on boost
I just got my car back and I'm breaking in the motor. I'm running ign/by 1 I've cleaned up all the bottom end from bar 12 down. I'm avoiding boost for the next 500Km but I accidentaly went on boost this morning while logging. At about 3000RPM bar 13 is 1.456. It seemed to lean right out. I was wondering what everyone else is running for bar 13 at that RPM so I see how far off I am.
My car is 93 FD 1600cc secondaries 550cc primaries. Street ported, 3mm seals and a GR-63 turbo.
Raven
My car is 93 FD 1600cc secondaries 550cc primaries. Street ported, 3mm seals and a GR-63 turbo.
Raven
#3
Apex seal blower
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I assume you are running ign/by 2 instead of 1. So your fuel should be about 60% higher than mine. So it is pretty close. I'll just richen it up a fair amount and work my way back down.
Anyone else want to share some values..
Raven
Anyone else want to share some values..
Raven
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According to the manual the ignition divide by is:
My take on it is that its the number of times the ECU fires the injectors per crank revolution.
"Ignition Divide By
Ignition Divide By is the number of ignition pulses that will be counted until the next
injection pulse. For almost all multipoint systems, injection should occur once per
revolution so Ignition Divide By should be set to half the number of cylinders. If the
system is operating in Batch Fire or Sequential mode, or is a rotary, then a value of 1
is suggested."
Ignition Divide By is the number of ignition pulses that will be counted until the next
injection pulse. For almost all multipoint systems, injection should occur once per
revolution so Ignition Divide By should be set to half the number of cylinders. If the
system is operating in Batch Fire or Sequential mode, or is a rotary, then a value of 1
is suggested."
Last edited by Claudio RX-7; 04-13-05 at 05:11 PM.
#6
The mystery of the prize.
yes, I've read the manual as I imagine all of us have. I was hoping for something a bit more useful, along the lines of 1 vs 2 on rotary applications. Nobody has made a good case for using 1 over 2 or vice versa on a 13b that I have seen. Yet most the maps I see are using 2 for 13b's, even though the manual suggests using 1 on rotary applications.
#7
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I've read a bit about it from the yahoo haltech forum. Basically you can run either on a rotary both should run fine but if you use 2, you get better granularity of the fuel, so you can make finer adjustments. So for higher boost and larger injector applications 2 is usually better.
I plan on switching to 2 when my motor is broken in.
Raven
I plan on switching to 2 when my motor is broken in.
Raven
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I've tried both, and the only difference I've noticed is that if I switch from Ign/by 1 to Ign/by 2, I can't use the same fuel maps. They need to be adjusted to get the right A/F mixtures and allow the engine to run smoothly.
Other then that, throttle response seems the same and the engine will easily reach redline in either mode so long as the ignition advance is set to adjust according to engine speed.
Other then that, throttle response seems the same and the engine will easily reach redline in either mode so long as the ignition advance is set to adjust according to engine speed.
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Originally Posted by pengarufoo
yes, I've read the manual as I imagine all of us have. I was hoping for something a bit more useful, along the lines of 1 vs 2 on rotary applications. Nobody has made a good case for using 1 over 2 or vice versa on a 13b that I have seen. Yet most the maps I see are using 2 for 13b's, even though the manual suggests using 1 on rotary applications.
The manual does say 1 for rotaries, but i've always used and advised 2, i get pretty good fuel delivery at 2, i must admit i havent used 1, i will try it on a car im working on now and will PM you the results.
Later,
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That is the hope I haven't missed an Ottawa cruise yet. Everything is working out pretty well so far. The lower range is smoother then I've ever had it. I'm still blowing a lot of smoke though. I've got to see if I can fix that at all. Perhaps it's too much oil.
Raven
Raven
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Originally Posted by ronbros3
do rotarys smoke some if they are rich, overfuelled, and seem like its oil. blueish. RON
Usually when they are rich, smoke is black, blue is a little more oil than normal, white (like smoke machine white) is when a water seal or jacket has failed, a little white smoke when cold and nothing when hot is the oil seals that are bad, and finally a little smoke when you decelerate when hot, usually is the turbo that is bad.
That's all i can think off.
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