Convert 2000 F-Body OS to a Flex Fuel OS?

[gmh308]

If you have the ability to reflash your PCM, why dont you simply build different tunes for each E mix, that use different stoich settings.

The challenge will be to find a flex fuel sensor at the right price. $700 list, $400 street from GM, though maybe you already have one.

[mr.prick]

I said this at first but why not do it.
I have recently found out that despite not being mandated to use E10
in the winter time, we here in northern Arizona still get E10.
It is only mandatory in Maricopa and Tuscon counties.
I personally would like to know what is in my tank when I travel as well.

On a side note I wonder if the E85 tables could be added to an OS with
.cax files or modification to the .calz
A COS is most likely out of the question.

[98 tigershark]

I use V1 and need to pack around my PC to flash a tune But since you know what is going to be in your tank do you think it best as mentioned to just have 2 tunes. 1 E70 and 1 E98? Thats allot of work it would seem to do the sensor deal and questionable results. If you Use V2 it would seem you could flash the PCM with what ever fuel you need to use. Another thing that no one has mentioned Is the Road runner with a WBO2. That certainly would seem to let you dial in whatever AFR for the you are using on the fly with only a few logs since you are using a E70+.
That would be a cool and reliable setup?
Good Luck,
98 tigershark
[QUOTE=coctostan;98136] I want to run the fuel sensor because I will run different mixtures of Ethanol to Gas. When it is super hot in the summer I will run E98 at times. In the cooler months it will be E70. Anyway, my PCM currently isn't doing much more than fuel, spark, idle etc. Does this help?

[mr.prick]

I imagine if your tune is good with gas all you would need to do is change B3601
and make sure B3618 is suitable.
Provided you injectors could handle it.
PE EQ =1.17 would be fine for both gas and E10

[98 tigershark]

Hey mr.prick
I hope you are having a good weekend. I thought you had said that you only had pure Gasoline were you are located? Were we live there must be some new regs as finding a consistent fuel blend seems to be a real problem for me.
What do you think about RR and a WBO2 for a pseudo flex fuel setup. As I recall, don't you have a good deal on one. That might solve coctostan's issue in the best manor for what he wants. Also a great racing setup for his RX7 LS1 setup.
cheers,
98 tigershark

I said this at first but why not do it.
I have recently found out that despite not being mandated to use E10
in the winter time, we here in northern Arizona still get E10.
It is only mandatory in Maricopa and Tuscon counties.
I personally would like to know what is in my tank when I travel as well.

On a side note I wonder if the E85 tables could be added to an OS with
.cax files or modification to the .calz
A COS is most likely out of the question.

[mr.prick]

Remember the point of this thread?
B3601 needs to be changed for type of fuel.
Like I said if your tune is good all you should have to change is the EQ1 value.
I read that we do not get E10 but since then I have talked to a truck driver that
was filling up the tanks at a local gas station.

He told me we get it in the winter even tho we aren't mandated to use it.
I am morally against Ethanol but it would be nice to get the extra power from it
and we do not have any choice in the winter.

Adding the FF tables via COS would probably be the only way to integrate them to an OS that does not have them although it might be possible with a .cax
I have not heard back from Ross yet.

FYI we just had a big Vette show downtown. (I didn't go)
Corvettes jam downtown in classic display

[98 tigershark]

What I meant was , if there was and AFR gauge and he had RR. An example is : AFR gauge says lets say 9 for E70 and he puts in E98 then the AFR would jump up to 12.5 approx. That would let you know and then w/RR all you would have to do is change that for the fuel on the fly sort of.
I do know it is not a flex fuel adjustment in the PCM but it does at least let you know what you have in the tank. As in Stoich of 14.63 AFR gauge says 15.00, you know you have E10. True not a flex fuel setup but the gauge does let you know what is in your tank and W/RR cant you change B3601 on the fly?
BTW thanks for the Vette show link. That was nice of you!! Have a good Sunday!
98 tigershark

Remember the point of this thread?
B3601 needs to be changed for type of fuel.
Like I said if your tune is good all you should have to change is the EQ1 value.
I read that we do not get E10 but since then I have talked to a truck driver that
was filling up the tanks at a local gas station.

He told me we get it in the winter even tho we aren't mandated to use it.
I am morally against Ethanol but it would be nice to get the extra power from it
and we do not have any choice in the winter.

Adding the FF tables via COS would probably be the only way to integrate them to an OS that does not have them although it might be possible with a .cax
I have not heard back from Ross yet.

FYI we just had a big Vette show downtown. (I didn't go)
Corvettes jam downtown in classic display

[mr.prick]

Without the sensor you won't know exactly what E% you have.
I don't see how AFR will tell you, if LTFTs are being used they will get you to
B3601 regardless of what is in the tank.

If WBO2 reads lean or rich the RR will multiply BEN to VE or MAF to get to commanded,
but with our OS commanded AFR won't change on it's own.
You can set up the RR many different ways this is just one example.

Obviously you won't use the RR with LTFTs but in OL with B3605 or B3616(filtered).
B3605 is in EQ only and will/would change if you had the sensor and FF OS.

[LM7Tuner]

Why would you want a F-body to run flex fuel they are for hauling ass not saving fuel.

[mr.prick]

Why would you want a F-body to run flex fuel they are for hauling ass not saving fuel.

Read this thread.
Ethanol is everywhere and in some cases can not be avoided.
Some people even say it can increase the hauling of ass.