Gen III Flex fuel
07-01-2014, 11:32 PM
#1
Gen III Flex fuel I just wanted to show what i have been working on for a few weeks now. This is a 1999 FLEX FUEL silverado. Using a 0411 pcm and a flex fuel content sensor. Pretty simple of an installation, just wanted to show that it can be done! Wirings still messy but it will get cleaned up, i just wanted to protect it a little better before i get better wire wrap.
Sensor and pigtail
Wired in and going!
Overall it is awesome being able to go to any gas station and put in any mix, as before i was just on 85 so i struggled with the mixtures.
Sensor and pigtail
Wired in and going!
Overall it is awesome being able to go to any gas station and put in any mix, as before i was just on 85 so i struggled with the mixtures.
Last edited by topgun542; 07-02-2014 at 12:14 AM.
07-02-2014, 07:35 PM
#7
Was that 02 OS already set up for flex fuel or did you have to add it? I haven't researched this much yet but what little I've read made it sound like it was hard to get flex fuel to work with 411s. I'm putting a 6.0 in one of my Firebirds and want to turbo it and run flex fuel
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07-02-2014, 07:45 PM
#8
Was that 02 OS already set up for flex fuel or did you have to add it? I haven't researched this much yet but what little I've read made it sound like it was hard to get flex fuel to work with 411s. I'm putting a 6.0 in one of my Firebirds and want to turbo it and run flex fuel
07-29-2014, 06:34 PM
#11
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I know the OP said he would do a full wright up but I have been researching this quite a bit in the last couple days and here's a couple answers to the questions already asked.
OS 12216125, which for EFILive means no COS and for HPTuner's only 2 bar speed density COS (I would assume this is the OS the OP is using based on info given)
The flex fuel sensor pictured appears to be part#13577429(OP correct me if I'm wrong)
The short wiring harness appears to be part#13352241(OP correct me if I'm wrong)
The Russell adapter from hardline to an is part#644123
All part #'s were sourced from http://forum.grrrr8.net/showthread.php?t=36467
I'm contemplating the PCM swap that bigmandengo mentioned except I was looking at a 2003 Chevrolet Express Van OS 12579405. It has a 3bar COS available from EFILive (not sure about HPTuners). If I pull the trigger I will definitely report back
OS 12216125, which for EFILive means no COS and for HPTuner's only 2 bar speed density COS (I would assume this is the OS the OP is using based on info given)
The flex fuel sensor pictured appears to be part#13577429(OP correct me if I'm wrong)
The short wiring harness appears to be part#13352241(OP correct me if I'm wrong)
The Russell adapter from hardline to an is part#644123
All part #'s were sourced from http://forum.grrrr8.net/showthread.php?t=36467
I'm contemplating the PCM swap that bigmandengo mentioned except I was looking at a 2003 Chevrolet Express Van OS 12579405. It has a 3bar COS available from EFILive (not sure about HPTuners). If I pull the trigger I will definitely report back
07-31-2014, 09:39 AM
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Don't know everything involved yet as I'm still researching it, but at this point it looks like you would just have to swap a handful of pins around. I know after looking at lt1swap.com the O2 sensors are wired/controlled differently but that would only apply if you are running closed loop speed density.
08-03-2014, 01:35 PM
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Is the 2005 express van a blue/red or blue/green connector style?
Also, when I was looking at a retail description of this specific application ecu, it listed it as having 4 sets of 32 pins... Is this right? I thought both the blue/red and blue/green connectors both had 4 sets of 40 pins.
Anyone have a gm number for the express van ecu? I'm finding different numbers from different sources.
Also, when I was looking at a retail description of this specific application ecu, it listed it as having 4 sets of 32 pins... Is this right? I thought both the blue/red and blue/green connectors both had 4 sets of 40 pins.
Anyone have a gm number for the express van ecu? I'm finding different numbers from different sources.
08-03-2014, 08:02 PM
#18
Is the 2005 express van a blue/red or blue/green connector style?
Also, when I was looking at a retail description of this specific application ecu, it listed it as having 4 sets of 32 pins... Is this right? I thought both the blue/red and blue/green connectors both had 4 sets of 40 pins.
Anyone have a gm number for the express van ecu? I'm finding different numbers from different sources.
Also, when I was looking at a retail description of this specific application ecu, it listed it as having 4 sets of 32 pins... Is this right? I thought both the blue/red and blue/green connectors both had 4 sets of 40 pins.
Anyone have a gm number for the express van ecu? I'm finding different numbers from different sources.
08-04-2014, 07:27 AM
#20
Here is a great link for info on which p59 pcm's work for dbc applications..
http://lt1swap.com/cable_conversion.htm
According to his research, it looks like the 2801 pcm might work.
Those prices on rockauto look a bit steep. You might want to check ebay or a local junkyard for a pcm. You shouldn't have to pay more than $100 for one.
http://lt1swap.com/cable_conversion.htm
According to his research, it looks like the 2801 pcm might work.
Those prices on rockauto look a bit steep. You might want to check ebay or a local junkyard for a pcm. You shouldn't have to pay more than $100 for one.