93 octane in a tune that's for full time E85.......
I've never heard of a dual flash 0411.
Who makes that? How do you switch between tunes?
As far as the E85 vs Pump Gas, that's one entry in the code. Change Stoich from 9.78 (E85) to 14.7 (Gas)
Everything else will track pretty well.
For valet control, just change the rev limiter in gear.
BTW, trims will only do it if you have the O2 sensors in place and functioning and STFT as well as LTFT turned on.
Surprised no tuners chimed in
Ron
Who makes that? How do you switch between tunes?
As far as the E85 vs Pump Gas, that's one entry in the code. Change Stoich from 9.78 (E85) to 14.7 (Gas)
Everything else will track pretty well.
For valet control, just change the rev limiter in gear.
BTW, trims will only do it if you have the O2 sensors in place and functioning and STFT as well as LTFT turned on.
Surprised no tuners chimed in
Ron
I've never heard of a dual flash 0411.
Who makes that? How do you switch between tunes?
As far as the E85 vs Pump Gas, that's one entry in the code. Change Stoich from 9.78 (E85) to 14.7 (Gas)
Everything else will track pretty well.
For valet control, just change the rev limiter in gear.
BTW, trims will only do it if you have the O2 sensors in place and functioning and STFT as well as LTFT turned on.
Surprised no tuners chimed in
Ron
Who makes that? How do you switch between tunes?
As far as the E85 vs Pump Gas, that's one entry in the code. Change Stoich from 9.78 (E85) to 14.7 (Gas)
Everything else will track pretty well.
For valet control, just change the rev limiter in gear.
BTW, trims will only do it if you have the O2 sensors in place and functioning and STFT as well as LTFT turned on.
Surprised no tuners chimed in
Ron
https://www.mrk-motorsports.com/stor...pcm/dualflash/
Basically, all you do to switch from #1 tune to #2 tune. Turn the key off, throw one toggle switch to choose the other tune......start it up and instantly drive away.
There's room inside the PCM for 3 chips, but not sure who makes one. I'm looking into it.
.
I believe Frost also had a dual tune pcm as well. But you could just have a switch that when flipped changes the coolant temperature to something crazy high and sets a rev limiter....more than 1 way to skin a cat and no custom pcm needed.
Can the engine be damaged if the car is driven like that?
.
It's the same as you having a special dual or tri tune pcm....you can practically set the car to pull all timing too if you wanted. All kinds of options. Same way you can run an na and n2o tune with 1 tune...iat or ECT switch.
Ifs thats the case, my problems are solved.....
Do you know how to do this? How long does it take to install two toggles for each tune....and tune it to work that way?
Where are you in FL.....I'll pay you to come to Melbourne and do it with my tuner....
.
Last edited by LS6427; Nov 12, 2017 at 07:01 PM.
Whose your tuner? I pulled a tune and took a look just to make sure and here are options I see:
- There is a VSS fault max RPM. So you put a switch that opens the vehicle speed circuit and this should limit the RPM
- There is a cold start max RPM table. If you shut the car off when you go to have it valeted, when they start it they will have a rev limiter that you set for a max of 410 seconds.
- IAT spark table- flip a switch that tells the computer the IATS are 194*F and have it pull all timing above a certain airflow so its a dog, but wont hurt anything.
- Same as last bullet, but with ECT.
Whose your tuner? I pulled a tune and took a look just to make sure and here are options I see:
- There is a VSS fault max RPM. So you put a switch that opens the vehicle speed circuit and this should limit the RPM
- There is a cold start max RPM table. If you shut the car off when you go to have it valeted, when they start it they will have a rev limiter that you set for a max of 410 seconds.
- IAT spark table- flip a switch that tells the computer the IATS are 194*F and have it pull all timing above a certain airflow so its a dog, but wont hurt anything.
- Same as last bullet, but with ECT.
IAT Spark Table or ECT seems like the easiest and most straight forward.
The Cold Start won't help because a valet guy can goi drive it and romp on it BEFORE he parks it. A LOT of valet places in South Florida are 2-3 blocks away from the venue.
Tuner will be: Jeremy Formato or "roastin240" from this site.
.
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Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
I've never heard of a dual flash 0411.
Who makes that? How do you switch between tunes?
As far as the E85 vs Pump Gas, that's one entry in the code. Change Stoich from 9.78 (E85) to 14.7 (Gas)
Everything else will track pretty well.
For valet control, just change the rev limiter in gear.
BTW, trims will only do it if you have the O2 sensors in place and functioning and STFT as well as LTFT turned on.
Surprised no tuners chimed in
Ron
Who makes that? How do you switch between tunes?
As far as the E85 vs Pump Gas, that's one entry in the code. Change Stoich from 9.78 (E85) to 14.7 (Gas)
Everything else will track pretty well.
For valet control, just change the rev limiter in gear.
BTW, trims will only do it if you have the O2 sensors in place and functioning and STFT as well as LTFT turned on.
Surprised no tuners chimed in
Ron
Do you know how to do this? I would absolutely like to do this.....I would use a toggle switch for each of the tunes.....E85 and 93.
IAT Spark Table or ECT seems like the easiest and most straight forward.
The Cold Start won't help because a valet guy can goi drive it and romp on it BEFORE he parks it. A LOT of valet places in South Florida are 2-3 blocks away from the venue.
Tuner will be: Jeremy Formato or "roastin240" from this site.
.
IAT Spark Table or ECT seems like the easiest and most straight forward.
The Cold Start won't help because a valet guy can goi drive it and romp on it BEFORE he parks it. A LOT of valet places in South Florida are 2-3 blocks away from the venue.
Tuner will be: Jeremy Formato or "roastin240" from this site.
.
Forget the dual flash 0411....run a 3 bar Custom OS P59 PCM with flex fuel feedback. Repin your 98 harness to work with it and add the couple wires to the PCM connectors for the flex fuel sensor and plumb it in the fuel return line.
Then you don't need 2 dedicated tunes....you can run any mixture of ethanol and it will adjust on the fly. This will be nice if you have a few gallons of E85 in the tank and throw 93 in, you will probably be around like E15 or E20 and you will run exactly what you need in that case. Also will allow you to run lower mixture contents like E50 to E60 to get further with your fuel system if you start to max it out.
WIN WIN WIN
Then you don't need 2 dedicated tunes....you can run any mixture of ethanol and it will adjust on the fly. This will be nice if you have a few gallons of E85 in the tank and throw 93 in, you will probably be around like E15 or E20 and you will run exactly what you need in that case. Also will allow you to run lower mixture contents like E50 to E60 to get further with your fuel system if you start to max it out.
WIN WIN WIN
Forget the dual flash 0411....run a 3 bar Custom OS P59 PCM with flex fuel feedback. Repin your 98 harness to work with it and add the couple wires to the PCM connectors for the flex fuel sensor and plumb it in the fuel return line.
Then you don't need 2 dedicated tunes....you can run any mixture of ethanol and it will adjust on the fly. This will be nice if you have a few gallons of E85 in the tank and throw 93 in, you will probably be around like E15 or E20 and you will run exactly what you need in that case. Also will allow you to run lower mixture contents like E50 to E60 to get further with your fuel system if you start to max it out.
WIN WIN WIN
Then you don't need 2 dedicated tunes....you can run any mixture of ethanol and it will adjust on the fly. This will be nice if you have a few gallons of E85 in the tank and throw 93 in, you will probably be around like E15 or E20 and you will run exactly what you need in that case. Also will allow you to run lower mixture contents like E50 to E60 to get further with your fuel system if you start to max it out.
WIN WIN WIN
I can't just have a kill switch....there will be certain places I go where I must valet the car and I just want to make it impossible for them to get into the throttle for fun. They can either damage it or wreck it......
These places have Lambos, Ferraris, Bentleys, Aston Martins, Maseratis, etc.....every night at their places....the valet guys are usually pretty professional, but it just takes one idiot.
.
TECH Junkie
Joined: Jul 2015
Posts: 3,012
Likes: 48
But is there still a way to flip a switch and have the engine not be able to exceed 1,200 rpm........for a valet/theft mode?
I can't just have a kill switch....there will be certain places I go where I must valet the car and I just want to make it impossible for them to get into the throttle for fun. They can either damage it or wreck it......
These places have Lambos, Ferraris, Bentleys, Aston Martins, Maseratis, etc.....every night at their places....the valet guys are usually pretty professional, but it just takes one idiot.
.
I can't just have a kill switch....there will be certain places I go where I must valet the car and I just want to make it impossible for them to get into the throttle for fun. They can either damage it or wreck it......
These places have Lambos, Ferraris, Bentleys, Aston Martins, Maseratis, etc.....every night at their places....the valet guys are usually pretty professional, but it just takes one idiot.
.