Fuel injector tuning
TECH Enthusiast
Joined: Aug 2006
Posts: 502
Likes: 1
Voltage requirement doesn't change (unless you are using injectors for the new 48v setup that BMW has on certain engines).
You just have to check and make sure that the coil impedance is the same. Stock LSes use high impedance injectors.
If you are using a low impedance injector, well, you'll fry the injector drivers in the pcm at startup.
As long as you bought injectors with the correct impedance, your tuner only needs to know the IFR (injector flow rate).
You just have to check and make sure that the coil impedance is the same. Stock LSes use high impedance injectors.
If you are using a low impedance injector, well, you'll fry the injector drivers in the pcm at startup.
As long as you bought injectors with the correct impedance, your tuner only needs to know the IFR (injector flow rate).
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If your ok with a raped VE table, then that method works just fine. If you want a proper tune with no finicky areas, each injector has it's own voltage offset data, and that info is hard to come by. I am still looking for the voltage offset, short pulse adder, and min pulse width for my 95# Delphi injectors.
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Verdad Gallardo TECH Enthusiast
Joined: Aug 2006
Posts: 502
Likes: 1
If your ok with a raped VE table, then that method works just fine. If you want a proper tune with no finicky areas, each injector has it's own voltage offset data, and that info is hard to come by. I am still looking for the voltage offset, short pulse adder, and min pulse width for my 95# Delphi injectors.
and since you are so against "raped" ve tables, and already admitted you don't even have that information, exactly how are you running those 95# injectors?
......with a "raped" ve table, maybe?
So basically, you think we should only be tuning utilizing information we don't have.......
and since you are so against "raped" ve tables, and already admitted you don't even have that information, exactly how are you running those 95# injectors?
......with a "raped" ve table, maybe?
and since you are so against "raped" ve tables, and already admitted you don't even have that information, exactly how are you running those 95# injectors?
......with a "raped" ve table, maybe?
Unfortunately I am running with a raped VE table, and therefore I have some odd spots/drivability issues. Rich spots down low I can't tune out, and some surging I can't get rid of either. I have been looking for the correct voltage offsets and such for about 6 months.
I posted on behalf of the OP, who asked for the voltage information for the injector he purchased. The voltage info may be available in Greg Banish's new DVD, that summit sells for $250. If it had the correct information for my injectors, I would have bought it already. I don't know if the DVD contains the proper information for the OP's 55# injectors.
Inj info I'm still trying to find the correct data for the 60lb'ers. I used info off someones DVD and I still have a rich decel. Not unless I'm doing something wrong, which might be possible, LOL.
Did you receive any information with the Inj.? I E turn on time, Turn off time etc. ?
Did you receive any information with the Inj.? I E turn on time, Turn off time etc. ?
Greg's DVD had these Siemens
He calls the SD 60#Shorty
Siemens-Continental 61# Injectors
Part #FI114962 61#/hr @ 3 bar
Minitimer Connector Deka IV
Single 26 deg Cone
Cross reference this to see if you can use the same data. If you can, you know the drill. Buy the DVD.
He calls the SD 60#Shorty
Siemens-Continental 61# Injectors
Part #FI114962 61#/hr @ 3 bar
Minitimer Connector Deka IV
Single 26 deg Cone
Cross reference this to see if you can use the same data. If you can, you know the drill. Buy the DVD.
I'm still trying to find the correct data for the 60lb'ers. I used info off someones DVD and I still have a rich decel. Not unless I'm doing something wrong, which might be possible, LOL.
Did you receive any information with the Inj.? I E turn on time, Turn off time etc. ?
Did you receive any information with the Inj.? I E turn on time, Turn off time etc. ?
Min pulse n default I had the Min pulse to .805 and default @ .805 and was using DFCO but after exiting DFCO afr will go 11.8 ?
BTW, I called the place where I bought them as they do tuning also. He said that I needed to raise my min pulse to 1.2 or 1.3. Been there done that and still rich after exiting DFCO. I tried 1.4 but then @ 1500 it ran like it was hitting a rev limiter, but don't know if that is because I've been trying to compensate by leaning out the VE table in those area's for the SD tune. Maybe I need to try 1.4 again edit the VE table to see what happens??
Part and WOT runs great.
BTW I would think that 60lb short info would be very close to the 60lb long ?
BTW, I called the place where I bought them as they do tuning also. He said that I needed to raise my min pulse to 1.2 or 1.3. Been there done that and still rich after exiting DFCO. I tried 1.4 but then @ 1500 it ran like it was hitting a rev limiter, but don't know if that is because I've been trying to compensate by leaning out the VE table in those area's for the SD tune. Maybe I need to try 1.4 again edit the VE table to see what happens??
Part and WOT runs great.
BTW I would think that 60lb short info would be very close to the 60lb long ?
Last edited by davidws6; Sep 30, 2009 at 09:13 AM. Reason: additional info
I had the Min pulse to .805 and default @ .805 and was using DFCO but after exiting DFCO afr will go 11.8 ?
BTW, I called the place where I bought them as they do tuning also. He said that I needed to raise my min pulse to 1.2 or 1.3. Been there done that and still rich after exiting DFCO. I tried 1.4 but then @ 1500 it ran like it was hitting a rev limiter, but don't know if that is because I've been trying to compensate by leaning out the VE table in those area's for the SD tune. Maybe I need to try 1.4 again edit the VE table to see what happens??
Part and WOT runs great.
BTW I would think that 60lb short info would be very close to the 60lb long ?
BTW, I called the place where I bought them as they do tuning also. He said that I needed to raise my min pulse to 1.2 or 1.3. Been there done that and still rich after exiting DFCO. I tried 1.4 but then @ 1500 it ran like it was hitting a rev limiter, but don't know if that is because I've been trying to compensate by leaning out the VE table in those area's for the SD tune. Maybe I need to try 1.4 again edit the VE table to see what happens??
Part and WOT runs great.
BTW I would think that 60lb short info would be very close to the 60lb long ?
